{"id":4520,"date":"2016-04-26T19:34:41","date_gmt":"2016-04-26T19:34:41","guid":{"rendered":"http:\/\/bestkora.com\/IosDeveloper\/?p=4520"},"modified":"2017-09-27T04:32:26","modified_gmt":"2017-09-27T04:32:26","slug":"lektsiya-1-cs193p-spring-2016-obzor-kursa-i-vvedenie-v-ios-xcode-i-swift-chast-2","status":"publish","type":"post","link":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-1-cs193p-spring-2016-obzor-kursa-i-vvedenie-v-ios-xcode-i-swift-chast-2\/","title":{"rendered":"\u041b\u0435\u043a\u0446\u0438\u044f 1 CS193P Spring 2016 \u2014 \u041e\u0431\u0437\u043e\u0440 \u043a\u0443\u0440\u0441\u0430 \u0438 \u0432\u0432\u0435\u0434\u0435\u043d\u0438\u0435 \u0432 iOS, Xcode \u0438 Swift. (\u0447\u0430\u0441\u0442\u044c 2)"},"content":{"rendered":"<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/09\/Screen-Shot-2016-11-05-at-3.16.24-PM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-5916 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/09\/Screen-Shot-2016-11-05-at-3.16.24-PM.png\" alt=\"screen-shot-2016-11-05-at-3-16-24-pm\" width=\"1998\" height=\"1120\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/09\/Screen-Shot-2016-11-05-at-3.16.24-PM.png 1998w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/09\/Screen-Shot-2016-11-05-at-3.16.24-PM-300x168.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/09\/Screen-Shot-2016-11-05-at-3.16.24-PM-768x431.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/09\/Screen-Shot-2016-11-05-at-3.16.24-PM-1024x574.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/09\/Screen-Shot-2016-11-05-at-3.16.24-PM-500x280.png 500w\" sizes=\"auto, (max-width: 1998px) 100vw, 1998px\" \/><\/a><\/p>\n<p>\u041b\u0435\u043a\u0446\u0438\u044f 1 CS196P \u0412\u0435\u0441\u043d\u0430 2016\u00a0\u0438 \u0441\u043b\u0430\u0439\u0434\u044b \u043d\u0430 \u0430\u043d\u0433\u043b\u0438\u0439\u0441\u043a\u043e\u043c \u044f\u0437\u044b\u043a\u0435 \u043d\u0430\u0445\u043e\u0434\u044f\u0442\u0441\u044f \u043d\u0430\u00a0<strong>\u00a0<a title=\"Developing iOS 8 Apps for iPhone and iPad @ iTunes\" href=\"https:\/\/itunes.apple.com\/us\/course\/developing-ios-9-apps-swift\/id1104579961\" target=\"_blank\" rel=\"noopener\">iTunes \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u201c1. Course Overview and introduction to iOS, Xcode, and Swift.\u201d<\/a><\/strong><br \/>\n\u041d\u0438\u0436\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u043d\u0435\u0430\u0432\u0442\u043e\u0440\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0440\u0443\u0441\u0441\u043a\u043e\u044f\u0437\u044b\u0447\u043d\u044b\u0439 \u043a\u043e\u043d\u0441\u043f\u0435\u043a\u0442 \u041b\u0435\u043a\u0446\u0438\u0438 1, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0438\u0437 \u0434\u0432\u0443\u0445 \u0447\u0430\u0441\u0442\u0435\u0439:<br \/>\n\u041f\u0435\u0440\u0432\u0430\u044f \u0447\u0430\u0441\u0442\u044c \u041b\u0435\u043a\u0446\u0438\u0438 1 CS193P \u0412\u0435\u0441\u043d\u0430 2016\u00a0&#8212; 0 &#8212; 60 \u043c\u0438\u043d\u0443\u0442\u0430 \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f <strong><br \/>\n<a href=\"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-1-cs193p-spring-2016-obzor-kursa-i-vvedenie-v-ios-xcode-i-swift-chast-1\/\">\u0437\u0434\u0435\u0441\u044c<\/a><\/strong>,<br \/>\n\u0412\u0442\u043e\u0440\u0430\u044f \u0447\u0430\u0441\u0442\u044c\u00a0\u041b\u0435\u043a\u0446\u0438\u0438 1 CS193P \u0412\u0435\u0441\u043d\u0430 2016 &#8212; \u00a060 &#8212; 77 \u043c\u0438\u043d\u0443\u0442\u0430 &#8212; \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u0432 \u044d\u0442\u043e\u043c \u043f\u043e\u0441\u0442\u0435.<br \/>\n\u041a\u043e\u0434 \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0433\u043e \u043f\u0440\u0438\u043c\u0435\u0440\u0430 \u0434\u043b\u044f \u041b\u0435\u043a\u0446\u0438\u0438 1 \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u043d\u0430<a href=\"https:\/\/github.com\/BestKora\/Calculator-cs193p-Spring-2016-\"><strong> Github<\/strong><\/a>\u00a0\u0434\u043b\u044f<strong>\u00a0Xcode 7<\/strong>\u00a0\u0438<strong>\u00a0Swift 2.2<\/strong>. \u0414\u043b\u044f\u00a0<strong>Swift 3.0\u00a0<\/strong>\u00a0\u0438<strong>\u00a0Xcode 8<\/strong>\u00a0\u043a\u043e\u0434\u00a0\u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f\u00a0\u043d\u0430\u00a0<strong><a href=\"https:\/\/github.com\/BestKora\/Swift-3.0-Demo-Spring-2016\">Github<\/a><\/strong>, \u0430 \u0434\u043b\u044f<strong>\u00a0Swift 3 .2 \u00a0\u0438 Xcode 9<\/strong>\u00a0&#8212;\u00a0\u0442\u0430\u043a\u0436\u0435 \u043d\u0430\u00a0<strong><a href=\"https:\/\/github.com\/BestKora\/Swift-3.0-iOS-10-Demo-Spring-2016\">Github<\/a><\/strong>.<\/p>\n<p><span style=\"color: #3366ff;\">&#8212;&#8212;&#8212;&#8212;&#8212;&#8212; 60-\u0430\u044f \u043c\u0438\u043d\u0443\u0442\u0430 \u041b\u0435\u043a\u0446\u0438\u0438 &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;<\/span><\/p>\n<p>\u0422\u0430\u043a \u0447\u0442\u043e \u0438\u0434\u0435\u043c \u0434\u0430\u043b\u044c\u0448\u0435 \u0438 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\u0441\u0438\u0441\u0442\u0435\u043c\u043e\u0439 \u00a0Mac, \u0438 \u0447\u0442\u043e\u0431\u044b \u0432 \u043f\u0440\u0430\u0432\u043e\u043c \u0443\u0433\u043b\u0443 \u0431\u044b\u043b &#171;0&#187;, \u043d\u043e, \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e, \u0441 \u0434\u0440\u0443\u0433\u0438\u043c\u0438 \u0446\u0432\u0435\u0442\u0430\u043c\u0438.<br \/>\n\u042f \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u044e\u0441\u044c \u0432 \u041e\u0431\u043b\u0430\u0441\u0442\u044c \u0423\u0442\u0438\u043b\u0438\u0442 \u0432 \u043e\u043a\u043d\u043e \u041f\u0430\u043b\u0438\u0442\u0440\u0430, \u043e\u0442\u043a\u0443\u0434\u0430 \u044f \u0434\u043e\u0441\u0442\u0430\u0432\u0430\u043b \u0441\u0432\u043e\u0438 \u043a\u043d\u043e\u043f\u043a\u0438 \u0434\u043b\u044f \u0446\u0438\u0444\u0440\u043e\u0432\u043e\u0439 \u043a\u043b\u0430\u0432\u0438\u0430\u0442\u0443\u0440\u044b. \u0422\u0435\u043f\u0435\u0440\u044c \u044f \u0431\u0443\u0434\u0443 \u043f\u0435\u0440\u0435\u0442\u044f\u0433\u0438\u0432\u0430\u0442\u044c \u043c\u0435\u0442\u043a\u0443 &#8212; <strong>Label<\/strong>, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0441\u043e\u0431\u043e\u0439\u00a0\u00a0<strong>readonly<\/strong> \u0442\u0435\u043a\u0441\u0442.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.40.47-AM.png\" rel=\"attachment wp-att-4526\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4526 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.40.47-AM.png\" alt=\"Screen Shot 2016-04-25 at 8.40.47 AM\" width=\"1714\" height=\"908\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.40.47-AM.png 1714w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.40.47-AM-300x159.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.40.47-AM-768x407.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.40.47-AM-1024x542.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.40.47-AM-500x265.png 500w\" sizes=\"auto, (max-width: 1714px) 100vw, 1714px\" \/><\/a><\/p>\n<p>\u041f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u043d\u0435 \u043c\u043e\u0436\u0435\u0442 \u043a\u0430\u0441\u0430\u0442\u044c\u0441\u044f \u043c\u0435\u0442\u043a\u0438 \u0438 \u0437\u0430\u0442\u0435\u043c \u043f\u0435\u0447\u0430\u0442\u0430\u0442\u044c \u0442\u0443\u0434\u0430 \u0447\u0442\u043e-\u0442\u043e \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043c\u0430\u043b\u0435\u043d\u044c\u043a\u043e\u0439 \u043a\u043b\u0430\u0432\u0438\u0430\u0442\u0443\u0440\u044b \u043d\u0430\u00a0iPhone. \u042d\u0442\u043e \u00a0<strong>readonly<\/strong> \u0442\u0435\u043a\u0441\u0442, \u0438 \u0438\u043c\u0435\u043d\u043d\u043e \u0435\u0433\u043e \u043c\u044b \u0445\u043e\u0442\u0438\u043c \u0438\u043c\u0435\u0442\u044c \u043d\u0430 \u043d\u0430\u0448\u0435\u043c \u043a\u0430\u043b\u044c\u043a\u0443\u043b\u044f\u0442\u043e\u0440\u0435.<\/p>\n<p><!--more--><\/p>\n<p>\u042f \u043f\u043e\u043c\u0435\u0449\u0430\u044e \u0435\u0435 \u043d\u0430 \u043c\u043e\u0435\u043c \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u043c \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0435 \u0442\u043e\u0447\u043d\u043e \u0442\u0430\u043a\u0436\u0435, \u043a\u0430\u043a \u0438 \u043f\u0440\u0435\u0436\u0434\u0435 \u043f\u043e\u043c\u0435\u0449\u0430\u043b \u043a\u043d\u043e\u043f\u043a\u0438:<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.43.51-AM.png\" rel=\"attachment wp-att-4527\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4527 size-large\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.43.51-AM-1024x607.png\" alt=\"Screen Shot 2016-04-25 at 8.43.51 AM\" width=\"584\" height=\"346\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.43.51-AM-1024x607.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.43.51-AM-300x178.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.43.51-AM-768x455.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.43.51-AM-500x296.png 500w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.43.51-AM.png 1732w\" sizes=\"auto, (max-width: 584px) 100vw, 584px\" \/><\/a><\/p>\n<p>\u042f \u043c\u043e\u0433\u0443 \u0438\u0437\u043c\u0435\u043d\u044f\u0442\u044c \u0440\u0430\u0437\u043c\u0435\u0440 \u043c\u0435\u0442\u043a\u0438,<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.48.24-AM.png\" rel=\"attachment wp-att-4528\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4528 size-large\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.48.24-AM-1024x549.png\" alt=\"Screen Shot 2016-04-25 at 8.48.24 AM\" width=\"584\" height=\"313\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.48.24-AM-1024x549.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.48.24-AM-300x161.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.48.24-AM-768x412.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.48.24-AM-500x268.png 500w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.48.24-AM.png 1704w\" sizes=\"auto, (max-width: 584px) 100vw, 584px\" \/><\/a><\/p>\n<p>\u043c\u043e\u0433\u0443 \u0438\u0437\u043c\u0435\u043d\u044f\u0442\u044c \u0440\u0430\u0437\u043c\u0435\u0440 \u0448\u0440\u0438\u0444\u0442\u0430. \u0414\u0430\u0432\u0430\u0439\u0442\u0435 \u0441\u0434\u0435\u043b\u0430\u0435\u043c \u043c\u0435\u0442\u043a\u0443 \u0440\u0435\u0430\u043b\u044c\u043d\u043e \u0431\u043e\u043b\u044c\u0448\u043e\u0439 \u0438 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u043c \u0440\u0430\u0437\u043c\u0435\u0440 \u0448\u0440\u0438\u0444\u0442\u0430 40\u00a0point.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.50.31-AM-1.png\" rel=\"attachment wp-att-4531\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4531 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.50.31-AM-1.png\" alt=\"Screen Shot 2016-04-25 at 8.50.31 AM\" width=\"2348\" height=\"962\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.50.31-AM-1.png 2348w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.50.31-AM-1-300x123.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.50.31-AM-1-768x315.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.50.31-AM-1-1024x420.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-8.50.31-AM-1-500x205.png 500w\" sizes=\"auto, (max-width: 2348px) 100vw, 2348px\" \/><\/a><\/p>\n<p>\u042f \u043c\u043e\u0433\u0443 \u0434\u0430\u0436\u0435 \u0432\u044b\u0440\u0430\u0432\u043d\u044f\u0442\u044c \u0442\u0435\u043a\u0441\u0442 \u043c\u0435\u0442\u043a\u0438 \u0432\u043f\u0440\u0430\u0432\u043e, \u043a\u0430\u043a \u044d\u0442\u043e \u043f\u0440\u0438\u043d\u044f\u0442\u043e \u0443 \u043a\u0430\u043b\u044c\u043a\u0443\u043b\u044f\u0442\u043e\u0440\u0430:<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-12.57.38-PM.png\" rel=\"attachment wp-att-4532\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4532 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-12.57.38-PM.png\" alt=\"Screen Shot 2016-04-25 at 12.57.38 PM\" width=\"2394\" height=\"1002\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-12.57.38-PM.png 2394w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-12.57.38-PM-300x126.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-12.57.38-PM-768x321.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-12.57.38-PM-1024x429.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-12.57.38-PM-500x209.png 500w\" sizes=\"auto, (max-width: 2394px) 100vw, 2394px\" \/><\/a><\/p>\n<p>\u041c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c, \u044f \u043f\u043e\u043c\u0435\u043d\u044f\u044e \u0444\u043e\u043d \u0434\u043b\u044f \u0434\u0438\u0441\u043f\u043b\u0435\u044f \u0438 \u0441\u0434\u0435\u043b\u0430\u044e \u0435\u0433\u043e \u0433\u043e\u043b\u0443\u0431\u044b\u043c:<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.20.12-PM.png\" rel=\"attachment wp-att-4534\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4534 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.20.12-PM.png\" alt=\"Screen Shot 2016-04-25 at 1.20.12 PM\" width=\"2368\" height=\"998\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.20.12-PM.png 2368w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.20.12-PM-300x126.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.20.12-PM-768x324.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.20.12-PM-1024x432.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.20.12-PM-500x211.png 500w\" sizes=\"auto, (max-width: 2368px) 100vw, 2368px\" \/><\/a><\/p>\n<p>\u041c\u043d\u0435 \u043d\u0435 \u043d\u0440\u0430\u0432\u0438\u0442\u0441\u044f \u0447\u0435\u0440\u043d\u044b\u0439 \u043d\u0430 \u0433\u043e\u043b\u0443\u0431\u043e\u043c, \u043b\u0443\u0447\u0448\u0435 \u0431\u0435\u043b\u044b\u0439 \u043d\u0430 \u0433\u043e\u043b\u0443\u0431\u043e\u043c. \u0414\u0430\u0432\u0430\u0439\u0442\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u043c \u044d\u0442\u043e:<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.24.20-PM.png\" rel=\"attachment wp-att-4535\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4535 size-large\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.24.20-PM-1024x423.png\" alt=\"Screen Shot 2016-04-25 at 1.24.20 PM\" width=\"584\" height=\"241\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.24.20-PM-1024x423.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.24.20-PM-300x124.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.24.20-PM-768x317.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.24.20-PM-500x207.png 500w\" sizes=\"auto, (max-width: 584px) 100vw, 584px\" \/><\/a><\/p>\n<p>\u042f \u043c\u043e\u0433\u0443 \u043f\u0435\u0440\u0435\u043c\u0435\u0441\u0442\u0438\u0442\u044c \u043a\u0443\u0434\u0430 \u0443\u0433\u043e\u0434\u043d\u043e \u0438 \u0432\u044b\u0440\u0430\u0432\u043d\u044f\u0442\u044c \u043c\u043e\u0439 \u0434\u0438\u0441\u043f\u043b\u0435\u0439 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0433\u043e\u043b\u0443\u0431\u044b\u0445 \u043b\u0438\u043d\u0438\u0439:<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.26.36-PM.png\" rel=\"attachment wp-att-4536\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4536 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.26.36-PM.png\" alt=\"Screen Shot 2016-04-25 at 1.26.36 PM\" width=\"1936\" height=\"1194\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.26.36-PM.png 1936w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.26.36-PM-300x185.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.26.36-PM-768x474.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.26.36-PM-1024x632.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-1.26.36-PM-486x300.png 486w\" sizes=\"auto, (max-width: 1936px) 100vw, 1936px\" \/><\/a><\/p>\n<p>\u042d\u0442\u043e \u043e\u0447\u0435\u043d\u044c \u0432\u0430\u0436\u043d\u043e, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u044f \u0441\u043e\u0431\u0438\u0440\u0430\u044e\u0441\u044c \u0434\u0435\u043b\u0430\u0442\u044c \u043c\u043e\u0439 UI \u0433\u0438\u0431\u043a\u0438\u043c \u0438 \u0430\u0434\u0430\u043f\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u043c \u0432 \u0421\u0440\u0435\u0434\u0443. \u041d\u043e \u043f\u043e\u043a\u0430 \u043d\u0435 \u0431\u0443\u0434\u0443 \u044d\u0442\u043e\u0433\u043e \u0434\u0435\u043b\u0430\u0442\u044c.<\/p>\n<p>\u0422\u0435\u043f\u0435\u0440\u044c \u043f\u043e\u0434\u0443\u043c\u0430\u0435\u043c \u043e \u0442\u043e\u043c, \u043a\u0430\u043a \u043f\u043e\u0434\u0441\u043e\u0435\u0434\u0438\u043d\u0438\u0442\u044c \u0434\u0438\u0441\u043f\u043b\u0435\u0439 \u043a \u043d\u0430\u0448\u0435\u043c\u0443 <strong>Controller<\/strong>. \u042d\u0442\u043e \u0434\u0435\u043b\u0430\u0435\u0442\u0441\u044f \u043d\u0435\u043c\u043d\u043e\u0433\u043e \u043f\u043e-\u0434\u0440\u0443\u0433\u043e\u043c\u0443, \u0447\u0435\u043c \u0432 \u043f\u0440\u043e\u0448\u043b\u044b\u0439 \u0440\u0430\u0437, \u043a\u043e\u0433\u0434\u0430 \u043c\u044b \u043f\u043e\u0434\u0441\u043e\u0435\u0434\u0438\u043d\u044f\u043b\u0438 \u043a\u043d\u043e\u043f\u043a\u0438, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u044d\u0442\u043e \u043d\u0435 \u0442\u043e\u0442 \u0441\u043b\u0443\u0447\u0430\u0439, \u043a\u043e\u0433\u0434\u0430 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u043a\u0430\u0441\u0430\u0435\u0442\u0441\u044f \u043d\u0430\u0448\u0435\u0439 \u043c\u0435\u0442\u043a\u0438, \u0438 \u043c\u044b \u0434\u043e\u043b\u0436\u043d\u044b \u0432\u043e\u0432\u043b\u0435\u0447\u044c \u0432 \u044d\u0442\u043e \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0435 \u043c\u0435\u0442\u043e\u0434. \u042d\u0442\u043e \u0434\u0440\u0443\u0433\u043e\u0439 \u0441\u043b\u0443\u0447\u0430\u0439. \u042f \u0445\u043e\u0447\u0443 \u0433\u043e\u0432\u043e\u0440\u0438\u0442\u044c \u0441 \u044d\u0442\u043e\u0439 \u043c\u0435\u0442\u043a\u043e\u0439. \u042f \u0445\u043e\u0447\u0443 \u0440\u0430\u0437\u043c\u0435\u0449\u0430\u0442\u044c \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u044b\u0435 \u0446\u0438\u0444\u0440\u044b \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0435. \u0412 \u0434\u0430\u043d\u043d\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u043d\u0430\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u0432\u0437\u0430\u0438\u043c\u043e\u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043e\u0442 <strong>Controller<\/strong> \u043a \u0434\u0438\u0441\u043f\u043b\u0435\u044e \u0432\u043c\u0435\u0441\u0442\u043e \u043d\u0430\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043e\u0442 \u043a\u043d\u043e\u043f\u043a\u0438 \u043a <strong>\u0421ontroller<\/strong>. \u0421\u043e\u0435\u0434\u0438\u043d\u044f\u0442\u044c \u043c\u044b \u0431\u0443\u0434\u0435\u043c \u043c\u0435\u0442\u043a\u0443 \u0441 \u00a0<strong>\u0421ontroller<\/strong>\u00a0\u0442\u0435\u043c \u0436\u0435 \u0441\u0430\u043c\u044b\u043c \u0441\u043f\u043e\u0441\u043e\u0431\u043e\u043c: \u043f\u0440\u0438 \u043d\u0430\u0436\u0430\u0442\u043e\u0439 \u043a\u043b\u0430\u0432\u0438\u0448\u0438 <strong>CTRL<\/strong> \u0431\u0443\u0434\u0435\u043c \u0442\u044f\u043d\u0443\u0442\u044c \u043e\u0442 \u043c\u0435\u0442\u043a\u0438 \u043a \u043d\u0430\u0448\u0435\u043c\u0443\u00a0<strong>\u0421ontroller<\/strong>,<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.39.54-PM.png\" rel=\"attachment wp-att-4539\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4539 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.39.54-PM.png\" alt=\"Screen Shot 2016-04-25 at 4.39.54 PM\" width=\"1904\" height=\"1008\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.39.54-PM.png 1904w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.39.54-PM-300x159.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.39.54-PM-768x407.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.39.54-PM-1024x542.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.39.54-PM-500x265.png 500w\" sizes=\"auto, (max-width: 1904px) 100vw, 1904px\" \/><\/a><\/p>\n<p>\u043d\u043e \u043d\u0430 \u044d\u0442\u043e\u0442 \u0440\u0430\u0437 \u0432\u043c\u0435\u0441\u0442\u043e <strong>Action<\/strong> \u043c\u044b \u0432\u044b\u0431\u0435\u0440\u0435\u043c <strong>Outlet<\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.41.34-PM.png\" rel=\"attachment wp-att-4540\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4540 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.41.34-PM.png\" alt=\"Screen Shot 2016-04-25 at 4.41.34 PM\" width=\"1890\" height=\"996\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.41.34-PM.png 1890w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.41.34-PM-300x158.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.41.34-PM-768x405.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.41.34-PM-1024x540.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-4.41.34-PM-500x263.png 500w\" sizes=\"auto, (max-width: 1890px) 100vw, 1890px\" \/><\/a><\/p>\n<p><strong>Outlet<\/strong> \u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442, \u0447\u0442\u043e \u0432\u043c\u0435\u0441\u0442\u043e \u043c\u0435\u0442\u043e\u0434\u0430 \u0441\u043e\u0437\u0434\u0430\u0435\u0442\u0441\u044f \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e (<strong>property<\/strong>) \u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0430\u044f \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440\u0430 \u043a\u043b\u0430\u0441\u0441\u0430. \u042d\u0442\u043e \u043d\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u0435\u0442\u00a0<strong><span style=\"color: #0000ff;\">currentTitle<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0442\u0430\u043a\u0436\u0435 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440\u0430 \u043a\u043b\u0430\u0441\u0441\u0430. \u042d\u0442\u043e \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e \u0443\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442 \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0439, \u0442\u0430\u043a \u0447\u0442\u043e \u0443 \u043d\u0430\u0441 \u0435\u0441\u0442\u044c \u043a \u043d\u0435\u043c\u0443 \u0434\u043e\u0441\u0442\u0443\u043f \u0432 \u043b\u044e\u0431\u043e\u0435 \u0432\u0440\u0435\u043c\u044f. \u042f \u0445\u043e\u0447\u0443 \u043d\u0430\u0437\u0432\u0430\u0442\u044c \u044d\u0442\u043e \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e <strong><span style=\"color: #0000ff;\">display<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.19.32-PM.png\" rel=\"attachment wp-att-4543\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4543 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.19.32-PM.png\" alt=\"Screen Shot 2016-04-25 at 5.19.32 PM\" width=\"1794\" height=\"924\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.19.32-PM.png 1794w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.19.32-PM-300x155.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.19.32-PM-768x396.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.19.32-PM-1024x527.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.19.32-PM-500x258.png 500w\" sizes=\"auto, (max-width: 1794px) 100vw, 1794px\" \/><\/a><\/p>\n<p>\u041a \u0441\u0447\u0430\u0441\u0442\u044c\u044e <strong>Type<\/strong> \u0443\u043a\u0430\u0437\u0430\u043d \u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e. \u042d\u0442\u043e <strong><span style=\"color: #0000ff;\">UILabel<\/span><\/strong>, \u0430 \u043d\u0435 <strong><span style=\"color: #0000ff;\">AnyObject<\/span><\/strong>. \u042d\u0442\u043e \u0445\u043e\u0440\u043e\u0448\u043e, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e <strong>Xcode<\/strong> \u0442\u043e\u0447\u043d\u043e \u0437\u043d\u0430\u0435\u0442, \u0447\u0442\u043e \u044d\u0442\u043e <strong><span style=\"color: #0000ff;\">UILabel<\/span><\/strong>. \u0418 \u043d\u0435 \u0431\u0435\u0441\u043f\u043e\u043a\u043e\u0439\u0442\u0435\u0441\u044c \u043e <strong>Storage<\/strong>, <strong><span style=\"color: #0000ff;\">Weak<\/span><\/strong> \u0438\u043b\u0438\u00a0<strong><span style=\"color: #0000ff;\">Strong<\/span><\/strong>, \u043c\u044b \u0431\u0443\u0434\u0435\u043c \u0433\u043e\u0432\u043e\u0440\u0438\u0442\u044c \u043e\u0431 \u044d\u0442\u043e\u043c \u043d\u0430 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0439 \u043d\u0435\u0434\u0435\u043b\u0435, \u0430 \u0441\u0435\u0439\u0447\u0430\u0441 \u0432\u044b \u043c\u043e\u0436\u0435\u0442\u0435 \u044d\u0442\u043e \u043f\u0440\u043e\u0441\u0442\u043e \u0438\u0433\u043d\u043e\u0440\u0438\u0440\u043e\u0432\u0430\u0442\u044c. \u042f \u043d\u0430\u0436\u0438\u043c\u0430\u044e \u043a\u043d\u043e\u043f\u043a\u0443 <strong>Connect<\/strong> \u0438 <strong>Xcode<\/strong> \u0441\u043e\u0437\u0434\u0430\u0435\u0442 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e \u0432\u043c\u0435\u0441\u0442\u043e \u043c\u0435\u0442\u043e\u0434\u0430.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.27.06-PM.png\" rel=\"attachment wp-att-4544\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4544 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.27.06-PM.png\" alt=\"Screen Shot 2016-04-25 at 5.27.06 PM\" width=\"1818\" height=\"922\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.27.06-PM.png 1818w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.27.06-PM-300x152.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.27.06-PM-768x389.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.27.06-PM-1024x519.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.27.06-PM-500x254.png 500w\" sizes=\"auto, (max-width: 1818px) 100vw, 1818px\" \/><\/a><br \/>\n\u0418 \u043e\u043f\u044f\u0442\u044c <strong><span style=\"color: #800080;\">@IBOutlet<\/span> <\/strong>&#8212; \u044d\u0442\u043e \u0447\u0442\u043e-\u0442\u043e, \u0447\u0442\u043e \u0440\u0430\u0437\u043c\u0435\u0449\u0430\u0435\u0442 <strong>X\u0421ode<\/strong>, \u043a\u0440\u043e\u043c\u0435 \u044d\u0442\u043e\u0433\u043e \u043e\u043d \u0440\u0430\u0437\u043c\u0435\u0449\u0430\u0435\u0442 \u0435\u0449\u0435 \u043c\u0430\u043b\u0435\u043d\u044c\u043a\u0438\u0439 \u043a\u0440\u0443\u0436\u043e\u0447\u0435\u043a \u0437\u0434\u0435\u0441\u044c \u0436\u0435. \u00a0\u0415\u0441\u043b\u0438 \u0432\u044b \u043d\u0430\u0432\u0435\u0434\u0435\u0442\u0435 \u043c\u044b\u0448\u043a\u0443 \u043d\u0430 \u044d\u0442\u043e\u0442 \u043a\u0440\u0443\u0436\u043e\u0447\u0435\u043a, \u0442\u043e \u0443\u0432\u0438\u0434\u0438\u0442\u0435 \u043a \u0447\u0435\u043c\u0443 \u043d\u0430 UI \u043f\u043e\u0434\u0441\u043e\u0435\u0434\u0438\u043d\u0435\u043d \u044d\u0442\u043e\u0442 <strong><span style=\"color: #800080;\">@IBOutlet<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.30.37-PM.png\" rel=\"attachment wp-att-4546\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4546 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.30.37-PM.png\" alt=\"Screen Shot 2016-04-25 at 5.30.37 PM\" width=\"1804\" height=\"942\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.30.37-PM.png 1804w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.30.37-PM-300x157.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.30.37-PM-768x401.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.30.37-PM-1024x535.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.30.37-PM-500x261.png 500w\" sizes=\"auto, (max-width: 1804px) 100vw, 1804px\" \/><\/a><\/p>\n<p>\u0418\u043b\u0438 <strong><span style=\"color: #800080;\">@IBAction<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.42.05-PM.png\" rel=\"attachment wp-att-4547\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4547 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.42.05-PM.png\" alt=\"Screen Shot 2016-04-25 at 5.42.05 PM\" width=\"1800\" height=\"968\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.42.05-PM.png 1800w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.42.05-PM-300x161.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.42.05-PM-768x413.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.42.05-PM-1024x551.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.42.05-PM-500x269.png 500w\" sizes=\"auto, (max-width: 1800px) 100vw, 1800px\" \/><\/a><\/p>\n<p>\u0412\u044b \u043c\u043e\u0436\u0435\u0442\u0435 \u0438\u0433\u043d\u043e\u0440\u0438\u0440\u043e\u0432\u0430\u0442\u044c <strong><span style=\"color: #800080;\">@IBOutlet<\/span><\/strong>. \u042f \u0441\u043a\u0430\u0437\u0430\u043b \u0432\u0430\u043c, \u0447\u0442\u043e \u0432\u044b \u043c\u043e\u0436\u0435\u0442\u0435 \u0438\u0433\u043d\u043e\u0440\u0438\u0440\u043e\u0432\u0430\u0442\u044c <strong><span style=\"color: #0000ff;\">Weak<\/span><\/strong>\u00a0\u0438\u043b\u0438\u00a0<strong><span style=\"color: #0000ff;\">Strong<\/span><\/strong>, \u0432\u044b \u0442\u0430\u043a\u0436\u0435 \u043c\u043e\u0436\u0435\u0442\u0435 \u0438\u0433\u043d\u043e\u0440\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0438 <strong><span style=\"color: #0000ff;\">weak<\/span><\/strong>. \u041d\u043e<strong><span style=\"color: #0000ff;\"> var display: UILabel!<\/span> <\/strong>\u0432\u0430\u043c \u0431\u043e\u043b\u0435\u0435 \u0437\u043d\u0430\u043a\u043e\u043c\u043e, \u043e\u043d\u043e \u043f\u043e\u0445\u043e\u0436\u0435 \u043d\u0430\u00a0<strong><span style=\"color: #0000ff;\">var<\/span><\/strong>\u00a0<strong><span style=\"color: #0000ff;\">currentTitle<\/span><\/strong>. \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u043e <strong><span style=\"color: #0000ff;\">display<\/span><\/strong> &#8212; \u044d\u0442\u043e \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e \u043d\u0430\u0448\u0435\u0433\u043e <strong>Controller<\/strong> \u0438\u043b\u0438 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0430\u044f \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440\u0430 \u043a\u043b\u0430\u0441\u0441\u0430 (<strong>instance<\/strong> <strong>variable<\/strong>), \u0435\u0441\u043b\u0438 \u0432\u044b \u0445\u043e\u0442\u0438\u0442\u0435 \u0434\u0443\u043c\u0430\u0442\u044c \u0442\u0430\u043a\u0438\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c. \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u043e\u00a0<strong><span style=\"color: #0000ff;\">display<\/span><\/strong> \u0438\u043c\u0435\u0435\u0442 \u0442\u0438\u043f <strong><span style=\"color: #0000ff;\">:\u00a0<\/span><span style=\"color: #0000ff;\"><strong>U<\/strong>ILabel !<\/span><\/strong>. \u0427\u0442\u043e \u0436\u0435 \u0437\u0434\u0435\u0441\u044c \u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442 \u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439 <strong><span style=\"color: #0000ff;\">!<\/span> <\/strong>\u0437\u043d\u0430\u043a? \u042f \u0434\u0443\u043c\u0430\u043b, \u0447\u0442\u043e \u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u00a0<strong><span style=\"color: #0000ff;\">!\u00a0<\/span><\/strong>\u0437\u043d\u0430\u043a &#8212; \u044d\u0442\u043e &#171;\u0440\u0430\u0437\u0432\u0435\u0440\u043d\u0443\u0442\u043e\u0435&#187; <strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>, \u043f\u043e\u0447\u0435\u043c\u0443 \u0437\u0434\u0435\u0441\u044c-\u0442\u043e \u043e\u043d\u043e \u043f\u0440\u0438\u0441\u0443\u0442\u0441\u0442\u0432\u0443\u0435\u0442? \u0417\u0434\u0435\u0441\u044c \u044d\u0442\u043e \u043d\u0435 \u0438\u043c\u0435\u0435\u0442 \u0441\u043c\u044b\u0441\u043b\u0430. \u041d\u043e \u0444\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u0432\u044b \u043c\u043e\u0436\u0435\u0442\u0435 \u043f\u043e\u0441\u0442\u0430\u0432\u0438\u0442\u044c \u0437\u0434\u0435\u0441\u044c \u0432\u043e\u043f\u0440\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 <strong><span style=\"color: #0000ff;\">?<\/span><\/strong> \u0437\u043d\u0430\u043a, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439 <strong><span style=\"color: #0000ff;\">!<\/span><\/strong> \u0437\u043d\u0430\u043a \u0442\u0430\u043a\u0436\u0435 \u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442\u00a0<strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong><span style=\"color: #0000ff;\"><span style=\"color: #000000;\">. \u041e\u043d \u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442 \u0442\u043e\u0442 \u0436\u0435 \u0441\u0430\u043c\u044b\u0439 <span style=\"color: #0000ff;\"><strong>Optional<\/strong><\/span>, \u0447\u0442\u043e \u0438\u00a0\u0432\u043e\u043f\u0440\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439\u00a0<strong><span style=\"color: #0000ff;\">?<\/span><\/strong>\u00a0\u0437\u043d\u0430\u043a.<\/span><\/span><br \/>\n<a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.57.59-PM.png\" rel=\"attachment wp-att-4549\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4549 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.57.59-PM.png\" alt=\"Screen Shot 2016-04-25 at 5.57.59 PM\" width=\"1688\" height=\"536\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.57.59-PM.png 1688w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.57.59-PM-300x95.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.57.59-PM-768x244.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.57.59-PM-1024x325.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-5.57.59-PM-500x159.png 500w\" sizes=\"auto, (max-width: 1688px) 100vw, 1688px\" \/><\/a><\/p>\n<p>\u042f \u043e\u0441\u0442\u0430\u0432\u043b\u044e \u0437\u0434\u0435\u0441\u044c \u0432\u043e\u043f\u0440\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439\u00a0<strong><span style=\"color: #0000ff;\">?<\/span><\/strong>\u00a0\u0437\u043d\u0430\u043a \u0438 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0443 \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u043d\u0430\u0434 \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u043c \u043f\u0440\u0438\u043c\u0435\u0440\u043e\u043c. \u0417\u0430\u0442\u0435\u043c \u043c\u044b \u0432\u0435\u0440\u043d\u0435\u043c\u0441\u044f \u043a \u043d\u0435\u043c\u0443 \u0438 \u0437\u0430\u043c\u0435\u043d\u0438\u043c \u0435\u0433\u043e \u043d\u0430 \u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439\u00a0<strong><span style=\"color: #0000ff;\">!<\/span><\/strong>\u00a0\u0437\u043d\u0430\u043a, \u0447\u0442\u043e\u0431\u044b \u043f\u043e\u043a\u0430\u0437\u0430\u0442\u044c, \u0447\u0442\u043e \u043e\u043d \u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442 \u0432 \u044d\u0442\u043e\u043c \u043a\u043e\u043d\u0442\u0435\u043a\u0441\u0442\u0435. \u00a0\u041d\u043e \u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439\u00a0<strong><span style=\"color: #0000ff;\">!<\/span><\/strong>\u00a0\u0437\u043d\u0430\u043a \u0438 \u00a0\u0432\u043e\u043f\u0440\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439\u00a0<strong><span style=\"color: #0000ff;\">?<\/span><\/strong>\u00a0\u0437\u043d\u0430\u043a, \u043e\u0431\u0430, \u043e\u0437\u043d\u0430\u0447\u0430\u044e\u0442 <strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong> \u043f\u0440\u0438 \u0434\u0435\u043a\u043b\u0430\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438. \u0418\u0442\u0430\u043a, \u0443 \u043c\u0435\u043d\u044f \u0435\u0441\u0442\u044c\u00a0<strong><span style=\"color: #0000ff;\">display<\/span><\/strong>.<br \/>\n\u041a\u043e\u0433\u0434\u0430 \u044f \u043a\u0430\u0441\u0430\u044e\u0441\u044c \u0446\u0438\u0444\u0440 \u043d\u0430 \u0446\u0438\u0444\u0440\u043e\u0432\u043e\u0439 \u043a\u043b\u0430\u0432\u0438\u0430\u0442\u0443\u0440\u0435, \u044f \u0445\u043e\u0447\u0443, \u0447\u0442\u043e\u0431\u044b \u043e\u043d\u0438 \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u043b\u0438\u0441\u044c \u043a \u0442\u043e\u043c\u0443, \u0447\u0442\u043e \u0443\u0436\u0435 \u0435\u0441\u0442\u044c \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0435 <strong><span style=\"color: #0000ff;\">display<\/span><\/strong>.\u00a0\u0414\u0430\u0432\u0430\u0439\u0442\u0435 \u0441\u0434\u0435\u043b\u0430\u0435\u043c \u044d\u0442\u043e, \u043d\u043e \u0432\u043d\u0430\u0447\u0430\u043b\u0435 \u0438\u0437\u0431\u0430\u0432\u0438\u043c\u0441\u044f \u043e\u0442 \u043f\u0435\u0447\u0430\u0442\u0438 \u043d\u0430 \u043a\u043e\u043d\u0441\u043e\u043b\u0438. \u041d\u0430\u043c \u043d\u0435 \u043d\u0443\u0436\u043d\u043e \u044d\u0442\u043e\u0433\u043e \u0431\u043e\u043b\u044c\u0448\u0435 \u0434\u0435\u043b\u0430\u0442\u044c.<\/p>\n<p>\u042f \u0441\u043e\u0437\u0434\u0430\u043c \u0434\u0440\u0443\u0433\u0443\u044e \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u0443\u044e \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0442\u043e\u0436\u0435 \u0431\u0443\u0434\u0435\u0442 \u043a\u043e\u043d\u0441\u0442\u0430\u043d\u0442\u043e\u0439, \u0438 \u044d\u0442\u043e\u00a0<strong><span style=\"color: #0000ff;\">let<\/span><\/strong>. \u042f \u043d\u0430\u0437\u043e\u0432\u0443 \u044d\u0442\u0443 \u043b\u043e\u043a\u0430\u043b\u044c\u043d\u0443\u044e \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e <strong><span style=\"color: #0000ff;\">textCurrentlyInDisplay<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-6.43.34-PM.png\" rel=\"attachment wp-att-4560\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4560 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-6.43.34-PM.png\" alt=\"Screen Shot 2016-04-25 at 6.43.34 PM\" width=\"1256\" height=\"458\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-6.43.34-PM.png 1256w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-6.43.34-PM-300x109.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-6.43.34-PM-768x280.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-6.43.34-PM-1024x373.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-6.43.34-PM-500x182.png 500w\" sizes=\"auto, (max-width: 1256px) 100vw, 1256px\" \/><\/a><br \/>\n\u042f \u0445\u043e\u0447\u0443 \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0442\u0435\u043a\u0441\u0442, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u0432 \u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0438\u0439 \u043c\u043e\u043c\u0435\u043d\u0442 \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0435 <strong><span style=\"color: #0000ff;\">display<\/span><\/strong>. \u0418 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435, \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u043c\u044b \u043f\u043e\u0448\u043b\u0435\u043c <strong><span style=\"color: #0000ff;\">display<\/span><\/strong>, &#8212; <strong><span style=\"color: #0000ff;\">text<\/span><\/strong>. \u041c\u044b \u043c\u043e\u0436\u0435\u043c \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c \u044d\u0442\u043e \u0432 \u0434\u043e\u043a\u0443\u043c\u0435\u043d\u0442\u0430\u0446\u0438\u0438.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.23.08-PM-1.png\" rel=\"attachment wp-att-4565\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4565 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.23.08-PM-1.png\" alt=\"Screen Shot 2016-04-25 at 10.23.08 PM\" width=\"1152\" height=\"568\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.23.08-PM-1.png 1152w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.23.08-PM-1-300x148.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.23.08-PM-1-768x379.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.23.08-PM-1-1024x505.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.23.08-PM-1-500x247.png 500w\" sizes=\"auto, (max-width: 1152px) 100vw, 1152px\" \/><\/a><br \/>\n\u042d\u0442\u043e \u0434\u0430\u0441\u0442 \u043c\u043d\u0435 \u0442\u0435\u043a\u0441\u0442, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0435. \u042d\u0442\u043e \u043c\u0435\u0442\u043e\u0434 <strong><span style=\"color: #0000ff;\">UILabel<\/span><\/strong>. \u041d\u043e \u0442\u0443\u0442 \u0436\u0435 \u043f\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043e\u0448\u0438\u0431\u043a\u0430. \u041e\u0448\u0438\u0431\u043a\u0430 \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u044f \u0434\u043e\u043b\u0436\u0435\u043d &#171;\u0440\u0430\u0437\u0432\u0435\u0440\u043d\u0443\u0442\u044c&#187;\u00a0<strong><span style=\"color: #0000ff;\">display<\/span><\/strong>. \u0412\u044b \u0432\u0438\u0434\u0438\u0442\u0435, \u0447\u0442\u043e <strong><span style=\"color: #0000ff;\">display<\/span><\/strong> \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f <strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong> \u043c\u0435\u0442\u043a\u043e\u0439 <strong><span style=\"color: #0000ff;\">UILabel<\/span><\/strong>. \u0412\u044b \u043d\u0435 \u043c\u043e\u0436\u0435\u0442\u0435 \u043f\u043e\u0441\u043b\u0430\u0442\u044c \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435 <strong><span style=\"color: #0000ff;\">text<\/span><\/strong>\u00a0\u0442\u0438\u043f\u0443\u00a0<strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>, \u0442\u0438\u043f <strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>\u00a0\u043d\u0435 \u043f\u043e\u043d\u0438\u043c\u0430\u0435\u0442 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u044f\u00a0<strong><span style=\"color: #0000ff;\">text<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.27.11-PM.png\" rel=\"attachment wp-att-4566\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4566 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.27.11-PM.png\" alt=\"Screen Shot 2016-04-25 at 10.27.11 PM\" width=\"1504\" height=\"552\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.27.11-PM.png 1504w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.27.11-PM-300x110.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.27.11-PM-768x282.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.27.11-PM-1024x376.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.27.11-PM-500x184.png 500w\" sizes=\"auto, (max-width: 1504px) 100vw, 1504px\" \/><\/a><br \/>\n<strong><span style=\"color: #0000ff;\">UILabel<\/span><\/strong> \u043f\u043e\u043d\u0438\u043c\u0430\u0435\u0442 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435 <strong><span style=\"color: #0000ff;\">text<\/span><\/strong>, \u0442\u0430\u043a \u0447\u0442\u043e \u043d\u0430\u043c \u043d\u0443\u0436\u043d\u043e \u043f\u043e\u043b\u0443\u0447\u0438\u0442\u044c \u0430\u0441\u0441\u043e\u0446\u0438\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 <strong><span style=\"color: #0000ff;\">display<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u044b\u043c \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f\u00a0<strong><span style=\"color: #0000ff;\">UILabel<\/span><\/strong>, \u0438 \u043c\u044b \u043c\u043e\u0436\u0435\u043c \u044d\u0442\u043e \u0441\u0434\u0435\u043b\u0430\u0442\u044c \u0437\u0434\u0435\u0441\u044c \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e\u00a0<strong><span style=\"color: #0000ff;\">!<\/span><\/strong>\u00a0\u0437\u043d\u0430\u043a\u0430. \u0418 \u043e\u043f\u044f\u0442\u044c, \u0437\u0430\u043c\u0435\u0442\u044c\u0442\u0435, \u0447\u0442\u043e <strong>Xcode<\/strong> \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u0442 \u0438\u0441\u043f\u0440\u0430\u0432\u0438\u0442\u044c \u044d\u0442\u0443 \u043e\u0448\u0438\u0431\u043a\u0443, \u044f \u0441\u043e\u0433\u043b\u0430\u0448\u0430\u044e\u0441\u044c \u0438\u0441\u043f\u0440\u0430\u0432\u0438\u0442\u044c \u043e\u0448\u0438\u0431\u043a\u0443 \u0438 \u0441\u0442\u0430\u0432\u043b\u044e \u0432 \u043a\u043e\u043d\u0446\u0435\u00a0\u00a0\u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439\u00a0<strong><span style=\"color: #0000ff;\">!<\/span><\/strong>\u00a0\u0437\u043d\u0430\u043a.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.38.36-PM.png\" rel=\"attachment wp-att-4567\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4567 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.38.36-PM.png\" alt=\"Screen Shot 2016-04-25 at 10.38.36 PM\" width=\"1332\" height=\"538\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.38.36-PM.png 1332w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.38.36-PM-300x121.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.38.36-PM-768x310.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.38.36-PM-1024x414.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.38.36-PM-500x202.png 500w\" sizes=\"auto, (max-width: 1332px) 100vw, 1332px\" \/><\/a><br \/>\n\u0422\u0435\u043f\u0435\u0440\u044c \u044d\u0442\u043e &#171;\u0440\u0430\u0437\u0432\u0435\u0440\u043d\u0443\u0442\u043e\u0435&#187; <strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>\u00a0<strong><span style=\"color: #0000ff;\">UILabel<\/span><\/strong><span style=\"color: #000000;\">,<\/span>\u00a0\u0438 \u044f \u0435\u043c\u0443 \u043f\u043e\u0441\u044b\u043b\u0430\u044e \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435\u00a0<strong><span style=\"color: #0000ff;\">text<\/span><\/strong>. \u041d\u0430 \u0441\u0430\u043c\u043e\u043c \u0434\u0435\u043b\u0435\u00a0<strong><span style=\"color: #0000ff;\">text<\/span><\/strong> &#8212; \u044d\u0442\u043e \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e, \u043d\u0430\u043f\u043e\u0434\u043e\u0431\u0438\u0435 <strong><span style=\"color: #0000ff;\">currentTitle<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u0442\u0430\u043a\u0436\u0435 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e\u043c, \u043d\u043e \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e \u043a\u043d\u043e\u043f\u043a\u0438\u00a0<strong><span style=\"color: #0000ff;\">UIButton<\/span><\/strong>, \u0430\u00a0<span style=\"color: #0000ff;\"><strong>text<\/strong><\/span> &#8212; \u044d\u0442\u043e \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e \u043c\u0435\u0442\u043a\u0438\u00a0<strong><span style=\"color: #0000ff;\">UILabel<\/span><\/strong>. \u0415\u0441\u043b\u0438 \u043c\u044b \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c <strong>option<\/strong>+<strong>click<\/strong>\u00a0\u043d\u0430 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0435 <span style=\"color: #0000ff;\"><strong>text<\/strong><span style=\"color: #000000;\">, \u0442\u043e \u043c\u044b \u0443\u0432\u0438\u0434\u0438\u043c, \u0447\u0442\u043e\u00a0<\/span><strong>var text<\/strong><\/span> \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u00a0<strong><span style=\"color: #0000ff;\">Optional String<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.50.35-PM.png\" rel=\"attachment wp-att-4568\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4568 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.50.35-PM.png\" alt=\"Screen Shot 2016-04-25 at 10.50.35 PM\" width=\"1496\" height=\"870\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.50.35-PM.png 1496w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.50.35-PM-300x174.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.50.35-PM-768x447.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.50.35-PM-1024x596.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-25-at-10.50.35-PM-500x291.png 500w\" sizes=\"auto, (max-width: 1496px) 100vw, 1496px\" \/><\/a><\/p>\n<p>\u041f\u043e\u0447\u0435\u043c\u0443? \u041f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e <strong><span style=\"color: #0000ff;\">UILabel<\/span><\/strong> \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c <span style=\"text-decoration: underline;\">\u043d\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u0430<\/span>.\u00a0<strong><span style=\"color: #0000ff;\">text<\/span><\/strong> \u0432 \u043d\u0435\u0439, \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c, <span style=\"text-decoration: underline;\">\u043d\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d<\/span>. \u00a0\u041e\u043d \u0442\u0430\u043a\u0436\u0435 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f <strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>, \u043a\u0430\u043a \u0438\u00a0<strong><span style=\"color: #0000ff;\">currentTitle<\/span><\/strong>. \u0422\u0430\u043a \u0447\u0442\u043e \u043d\u0430\u043c \u043d\u0443\u0436\u043d\u043e \u0438 \u0435\u0433\u043e &#171;\u0440\u0430\u0437\u0432\u0435\u0440\u043d\u0443\u0442\u044c&#187;.<\/p>\n<p><span style=\"color: #3366ff;\">&#8212;&#8212;&#8212;&#8212;&#8212;&#8212; 65-\u0430\u044f \u043c\u0438\u043d\u0443\u0442\u0430 \u041b\u0435\u043a\u0446\u0438\u0438 &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;<\/span><\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.07.58-AM.png\" rel=\"attachment wp-att-4571\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4571 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.07.58-AM.png\" alt=\"Screen Shot 2016-04-27 at 8.07.58 AM\" width=\"1482\" height=\"540\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.07.58-AM.png 1482w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.07.58-AM-300x109.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.07.58-AM-768x280.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.07.58-AM-1024x373.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.07.58-AM-500x182.png 500w\" sizes=\"auto, (max-width: 1482px) 100vw, 1482px\" \/><\/a><br \/>\n\u0422\u0435\u043f\u0435\u0440\u044c \u0443 \u043c\u0435\u043d\u044f <strong><span style=\"color: #0000ff;\">String<\/span><\/strong>. \u041c\u043d\u0435 \u043a\u0430\u0436\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u0432\u044b, \u043a\u0430\u043a \u0438 \u044f, \u0443\u0441\u0442\u0430\u043b\u0438 \u043e\u0442 \u0432\u0441\u0435\u0445 \u044d\u0442\u0438\u0445 \u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0445<strong><span style=\"color: #0000ff;\"> !<\/span> <\/strong>\u0437\u043d\u0430\u043a\u043e\u0432, \u0438 \u043c\u044b \u0441\u043e\u0431\u0438\u0440\u0430\u0435\u043c\u0441\u044f \u0438\u0437\u0431\u0430\u0432\u0438\u0442\u044c\u0441\u044f \u0442\u043e \u043d\u0438\u0445. \u0427\u0435\u0440\u0435\u0437 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0441\u0435\u043a\u0443\u043d\u0434, \u0442\u0430\u043a \u0447\u0442\u043e \u043d\u0435 \u0431\u0435\u0441\u043f\u043e\u043a\u043e\u0439\u0442\u0435\u0441\u044c.<\/p>\n<p>\u041d\u043e \u043f\u043e-\u043b\u044e\u0431\u043e\u043c\u0443 \u0443 \u043c\u0435\u043d\u044f \u0442\u0435\u043f\u0435\u0440\u044c \u0435\u0441\u0442\u044c \u0442\u0435\u043a\u0443\u0449\u0438\u0439 \u0442\u0435\u043a\u0441\u0442 \u0434\u0438\u0441\u043f\u043b\u0435\u044f\u00a0<strong><span style=\"color: #0000ff;\">display<\/span><\/strong>. \u0418 \u044f \u043c\u043e\u0433\u0443 \u043d\u0430\u043f\u0438\u0441\u0430\u0442\u044c \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0438\u0439 \u043a\u043e\u0434:<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.16.47-AM.png\" rel=\"attachment wp-att-4572\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4572 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.16.47-AM.png\" alt=\"Screen Shot 2016-04-27 at 8.16.47 AM\" width=\"1510\" height=\"614\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.16.47-AM.png 1510w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.16.47-AM-300x122.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.16.47-AM-768x312.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.16.47-AM-1024x416.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.16.47-AM-500x203.png 500w\" sizes=\"auto, (max-width: 1510px) 100vw, 1510px\" \/><\/a><\/p>\n<p>\u0417\u0430\u043c\u0435\u0442\u0438\u043c, \u0447\u0442\u043e \u0432\u044b \u043c\u043e\u0436\u0435\u0442\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c &#171;<strong><span style=\"color: #0000ff;\">+<\/span><\/strong>&#187; \u0434\u043b\u044f \u043a\u043e\u043d\u043a\u0430\u0442\u0435\u043d\u0430\u0446\u0438\u0438 \u0441\u0442\u0440\u043e\u043a. \u041d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u044f\u0437\u044b\u043a\u0438 \u0440\u0430\u0437\u0440\u0435\u0448\u0430\u044e\u0442, \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 &#8212; \u043d\u0435\u0442. <strong>Swift<\/strong> \u0440\u0430\u0437\u0440\u0435\u0448\u0430\u0435\u0442. \u0417\u0430\u043c\u0435\u0442\u044c\u0442\u0435 \u0442\u0430\u043a\u0436\u0435, \u0447\u0442\u043e, \u043a\u043e\u0433\u0434\u0430 \u044f \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u044e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 <strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>, \u043f\u043e\u043c\u043d\u0438\u0442\u0435? \u0437\u0434\u0435\u0441\u044c <strong><span style=\"color: #0000ff;\">text<\/span><\/strong> &#8212; \u044d\u0442\u043e <strong><span style=\"color: #0000ff;\">Optional \u00a0String<\/span><\/strong>, \u044f \u043c\u043e\u0433\u0443 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c \u0435\u0433\u043e \u0442\u0430\u043a, \u0447\u0442\u043e\u0431\u044b \u043e\u043d\u043e \u0431\u044b\u043b\u043e <strong><span style=\"color: #0000ff;\">String<\/span><\/strong>, \u0447\u0442\u043e \u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442, \u043f\u043e \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u044e, \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0443\u00a0<strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong> \u0432 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 &#171;<span style=\"text-decoration: underline;\">\u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u043e<\/span>&#187; \u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0435\u0433\u043e \u0430\u0441\u0441\u043e\u0446\u0438\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.00.42-AM.png\" rel=\"attachment wp-att-4573\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4573 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.00.42-AM.png\" alt=\"Screen Shot 2016-04-27 at 11.00.42 AM\" width=\"1538\" height=\"854\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.00.42-AM.png 1538w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.00.42-AM-300x167.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.00.42-AM-768x426.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.00.42-AM-1024x569.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.00.42-AM-500x278.png 500w\" sizes=\"auto, (max-width: 1538px) 100vw, 1538px\" \/><\/a><\/p>\n<p>\u0422\u0435\u043f\u0435\u0440\u044c \u0434\u0430\u0432\u0430\u0439\u0442\u0435 \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0438\u043c, \u043a\u0430\u043a \u044f \u0441\u043c\u043e\u0433\u0443 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c \u044d\u0442\u043e <strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong> \u0432 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 &#171;<span style=\"text-decoration: underline;\">\u043d\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u043e<\/span>&#187; ? \u041a\u0442\u043e-\u043d\u0438\u0431\u0443\u0434\u044c \u0437\u043d\u0430\u0435\u0442? \u0412\u044b \u0433\u043e\u0432\u043e\u0440\u0438\u0442\u0435, \u0447\u0442\u043e \u043d\u0443\u0436\u043d\u043e \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c \u044d\u0442\u0443 \u0432\u0435\u0449\u044c \u0432\u00a0<strong><span style=\"color: #0000ff;\">nil<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.53.07-AM.png\" rel=\"attachment wp-att-4575\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4575 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.53.07-AM.png\" alt=\"Screen Shot 2016-04-27 at 11.53.07 AM\" width=\"1518\" height=\"600\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.53.07-AM.png 1518w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.53.07-AM-300x119.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.53.07-AM-768x304.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.53.07-AM-1024x405.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-11.53.07-AM-500x198.png 500w\" sizes=\"auto, (max-width: 1518px) 100vw, 1518px\" \/><\/a><\/p>\n<p>\u042d\u0442\u043e \u043a\u043b\u044e\u0447\u0435\u0432\u043e\u0435 \u0441\u043b\u043e\u0432\u043e, \u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442, \u0447\u0442\u043e <strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>\u00a0\u00a0&#171;<span style=\"text-decoration: underline;\">\u043d\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u043e<\/span>&#171;. \u0415\u0441\u043b\u0438 \u043c\u044b \u0442\u0430\u043a\u0438\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u043b\u0438 \u044d\u0442\u043e\u0442\u00a0<strong><span style=\"color: #0000ff;\">text<\/span><\/strong>, \u0442\u043e \u043e\u043d \u0431\u0443\u0434\u0435\u0442 \u043f\u0443\u0441\u0442\u044b\u043c. \u0422\u0430\u043a\u0438\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c, \u043a\u043e\u0433\u0434\u0430 \u0432\u044b \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0435\u0442\u0435\u00a0<strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>, \u0442\u043e \u0432\u044b \u043c\u043e\u0436\u0435\u0442\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c \u0435\u0433\u043e \u043b\u0438\u0431\u043e \u0432\u00a0<strong><span style=\"color: #0000ff;\">nil<\/span><\/strong>, \u043b\u0438\u0431\u043e \u0432 \u0430\u0441\u0441\u043e\u0446\u0438\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.06.28-PM.png\" rel=\"attachment wp-att-4577\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4577 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.06.28-PM.png\" alt=\"Screen Shot 2016-04-27 at 4.06.28 PM\" width=\"1480\" height=\"614\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.06.28-PM.png 1480w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.06.28-PM-300x124.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.06.28-PM-768x319.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.06.28-PM-1024x425.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.06.28-PM-500x207.png 500w\" sizes=\"auto, (max-width: 1480px) 100vw, 1480px\" \/><\/a><\/p>\n<p>\u0417\u0432\u0443\u0447\u0438\u0442 \u0445\u043e\u0440\u043e\u0448\u043e. \u0414\u0430\u0432\u0430\u0439\u0442\u0435 \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u043c \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435<br \/>\n\u042f \u043d\u0430\u0434\u0435\u044e\u0441\u044c, \u0447\u0442\u043e \u0435\u0441\u043b\u0438 \u043c\u044b \u0431\u0443\u0434\u0435\u043c \u043d\u0430\u0436\u0438\u043c\u0430\u0442\u044c \u043a\u043d\u043e\u043f\u043a\u0438 \u0441 \u0446\u0438\u0444\u0440\u0430\u043c\u0438, \u0442\u043e \u043e\u043d\u0438 \u043d\u0430\u0447\u043d\u0443\u0442 \u043f\u043e\u044f\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0435 <strong><span style=\"color: #0000ff;\">display<\/span><\/strong> \u0432 \u043a\u043e\u043d\u0446\u0435. \u041d\u0430\u0436\u0438\u043c\u0430\u0435\u043c &#171;5&#187; &#8212; \u043f\u043e\u044f\u0432\u0438\u043b\u0430\u0441\u044c, &#171;8&#187;, &#171;9&#187; &#8212; \u0432\u0441\u0435 \u043f\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f, \u043d\u043e \u043c\u043d\u0435 \u043d\u0435 \u043d\u0440\u0430\u0432\u0438\u0442\u0441\u044f &#171;0&#187; \u0432 \u0441\u0430\u043c\u043e\u043c \u043d\u0430\u0447\u0430\u043b\u0435:<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.08.40-PM.png\" rel=\"attachment wp-att-4578\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4578 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.08.40-PM.png\" alt=\"Screen Shot 2016-04-27 at 4.08.40 PM\" width=\"1370\" height=\"1380\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.08.40-PM.png 1370w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.08.40-PM-150x150.png 150w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.08.40-PM-298x300.png 298w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.08.40-PM-768x774.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.08.40-PM-1017x1024.png 1017w\" sizes=\"auto, (max-width: 1370px) 100vw, 1370px\" \/><\/a><\/p>\n<p>\u041d\u0443\u043b\u044c &#171;0&#187; &#8212; \u0442\u0430\u043a \u043a\u0430\u043b\u044c\u043a\u0443\u043b\u044f\u0442\u043e\u0440 \u043d\u0435 \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442. \u041a\u043e\u0433\u0434\u0430 \u044f \u043d\u0430\u0436\u0438\u043c\u0430\u044e &#171;5&#187;, \u0442\u043e \u044f \u043d\u0430\u0447\u0438\u043d\u0430\u044e \u043f\u0435\u0447\u0430\u0442\u0430\u0442\u044c \u043d\u043e\u0432\u043e\u0435 \u0447\u0438\u0441\u043b\u043e. \u041d\u0430\u043c \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0438\u0437\u0431\u0430\u0432\u0438\u0442\u044c\u0441\u044f \u043e\u0442 &#171;0&#187;. \u041d\u0430\u043c \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u043d\u0430\u0439\u0442\u0438 \u0441\u043f\u043e\u0441\u043e\u0431, \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043a\u043e\u0442\u043e\u0440\u043e\u0433\u043e \u043c\u044b \u0441\u043c\u043e\u0436\u0435\u043c \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u0442\u044c, \u043d\u0430\u0445\u043e\u0434\u0438\u043c\u0441\u044f \u043b\u0438 \u043c\u044b \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u043d\u0430\u0431\u043e\u0440\u0430 \u0447\u0438\u0441\u043b\u0430 \u0438\u043b\u0438 \u043d\u0435\u0442. \u041f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e, \u0435\u0441\u043b\u0438 \u043c\u044b \u043d\u0430\u0445\u043e\u0434\u0438\u043c\u0441\u044f \u0432 \u0441\u0435\u0440\u0435\u0434\u0438\u043d\u0435 \u043d\u0430\u0431\u043e\u0440\u0430 \u0447\u0438\u0441\u043b\u0430, \u0442\u043e \u043c\u044b \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u043c \u0446\u0438\u0444\u0440\u044b \u0432 \u043a\u043e\u043d\u0435\u0446 <strong><span style=\"color: #0000ff;\">display<\/span><\/strong>, \u0430 \u0435\u0441\u043b\u0438 \u043d\u0435\u0442, \u0442\u043e \u043c\u044b \u043f\u0440\u043e\u0441\u0442\u043e \u0437\u0430\u043c\u0435\u043d\u044f\u0435\u043c \u0432\u0441\u0435, \u0447\u0442\u043e \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0435 <strong><span style=\"color: #0000ff;\">display<\/span><\/strong>, \u043d\u0430 \u0442\u043e, \u0447\u0442\u043e \u043c\u044b \u043f\u0435\u0447\u0430\u0442\u0430\u0435\u043c. \u041f\u043e\u044d\u0442\u043e\u043c\u0443 \u044f \u0441\u043e\u0431\u0438\u0440\u0430\u044e\u0441\u044c \u0434\u043e\u0431\u0430\u0432\u0438\u0442\u044c \u043d\u043e\u0432\u0443\u044e \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e, \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440\u0430 \u043a\u043b\u0430\u0441\u0441\u0430, \u043d\u043e\u0432\u043e\u0435 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e \u0441 \u0438\u043c\u0435\u043d\u0435\u043c\u00a0<strong><span style=\"color: #0000ff;\">userIsInTheMiddleOfTyping<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.23.26-PM.png\" rel=\"attachment wp-att-4579\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4579 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.23.26-PM.png\" alt=\"Screen Shot 2016-04-27 at 4.23.26 PM\" width=\"1484\" height=\"696\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.23.26-PM.png 1484w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.23.26-PM-300x141.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.23.26-PM-768x360.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.23.26-PM-1024x480.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-4.23.26-PM-500x235.png 500w\" sizes=\"auto, (max-width: 1484px) 100vw, 1484px\" \/><\/a><\/p>\n<p>\u0422\u0435\u043f\u0435\u0440\u044c \u0432\u044b \u0441\u043c\u0435\u0435\u0442\u0435\u0441\u044c, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u0432\u0430\u043c \u043a\u0430\u0436\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u044d\u0442\u043e \u0442\u0430\u043a\u043e\u0435 \u0434\u043b\u0438\u043d\u043d\u043e\u0435 \u0438\u043c\u044f \u0438 \u0432\u0430\u043c \u043f\u0440\u0438\u0434\u0435\u0442\u0441\u044f \u043e\u0447\u0435\u043d\u044c \u043c\u043d\u043e\u0433\u043e \u0440\u0430\u0437 \u043f\u0435\u0447\u0430\u0442\u0430\u0442\u044c \u0435\u0433\u043e \u0441\u043d\u043e\u0432\u0430 \u0438 \u0441\u043d\u043e\u0432\u0430, \u043d\u043e \u0432\u0430\u043c \u0431\u043e\u043b\u044c\u0448\u0435 \u043d\u0438\u043a\u043e\u0433\u0434\u0430 \u043d\u0435 \u043f\u0440\u0438\u0434\u0435\u0442\u0441\u044f \u0435\u0433\u043e \u043f\u0435\u0447\u0430\u0442\u0430\u0442\u044c. \u041f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e\u00a0<strong>Xcode<\/strong> \u0432\u0441\u0435\u0433\u0434\u0430 \u0441\u0430\u043c \u0437\u0430\u043a\u0430\u043d\u0447\u0438\u0432\u0430\u0435\u0442 \u0441\u043b\u043e\u0432\u0430 \u0432\u043c\u0435\u0441\u0442\u043e \u0432\u0430\u0441. \u0422\u0430\u043a \u0447\u0442\u043e \u0434\u043b\u0438\u043d\u043d\u044b\u0435 \u0438\u043c\u0435\u043d\u0430, \u0432 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438, \u0445\u043e\u0440\u043e\u0448\u043e. \u0412\u044b \u043c\u043e\u0436\u0435\u0442\u0435 \u0432\u044b\u0431\u0440\u0430\u0442\u044c \u0431\u043e\u043b\u0435\u0435 \u043a\u043e\u0440\u043e\u0442\u043a\u043e\u0435 \u0438\u043c\u044f, \u0447\u0435\u043c \u0442\u043e, \u0447\u0442\u043e \u043e\u043d\u043e \u043c\u043e\u0433\u043b\u043e \u0431\u044b \u0432\u044b\u0440\u0430\u0436\u0430\u0442\u044c, \u043d\u043e, \u043a\u0430\u043a \u0432\u044b \u0437\u043d\u0430\u0435\u0442\u0435 \u0438\u0437 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0442\u0438\u043a\u0438, \u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e\u0435 \u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 &#8212; \u044d\u0442\u043e \u043f\u0440\u0435\u0436\u0434\u0435 \u0432\u0441\u0435\u0433\u043e \u0445\u043e\u0440\u043e\u0448\u043e \u0434\u043b\u044f \u0442\u043e\u0433\u043e, \u043a\u0442\u043e \u0447\u0438\u0442\u0430\u0435\u0442 \u0432\u0430\u0448 \u043a\u043e\u0434. \u041f\u043e\u044d\u0442\u043e\u043c\u0443 \u043d\u0430\u0448\u0435 \u043d\u043e\u0432\u043e\u0435 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e \u0438\u043c\u0435\u0435\u0442 \u0438\u043c\u044f <strong><span style=\"color: #0000ff;\">userIsInTheMiddleOfTyping<\/span><\/strong>\u00a0\u0438 \u0442\u0438\u043f <strong><span style=\"color: #0000ff;\">Bool<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.47.20-PM.png\" rel=\"attachment wp-att-4580\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4580 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.47.20-PM.png\" alt=\"Screen Shot 2016-04-27 at 6.47.20 PM\" width=\"1486\" height=\"696\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.47.20-PM.png 1486w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.47.20-PM-300x141.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.47.20-PM-768x360.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.47.20-PM-1024x480.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.47.20-PM-500x234.png 500w\" sizes=\"auto, (max-width: 1486px) 100vw, 1486px\" \/><\/a><br \/>\n\u042d\u0442\u043e \u043d\u0435 <strong><span style=\"color: #0000ff;\">Optional Bool<\/span><\/strong>. \u042d\u0442\u043e \u043f\u0440\u043e\u0441\u0442\u043e <strong><span style=\"color: #0000ff;\">Bool<\/span><\/strong>. \u0422\u0430\u043a \u0447\u0442\u043e \u043d\u0435\u0442 \u0432\u043e\u043f\u0440\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e<strong><span style=\"color: #0000ff;\"> ?<\/span> <\/strong>\u0437\u043d\u0430\u043a\u0430. \u041e\u043d\u043e \u043f\u0440\u043e\u0441\u0442\u043e \u043b\u0438\u0431\u043e <strong><span style=\"color: #0000ff;\">true<\/span><\/strong>, \u043b\u0438\u0431\u043e <strong><span style=\"color: #0000ff;\">false<\/span><\/strong>. \u041b\u0438\u0431\u043e \u044f \u043d\u0430\u0445\u043e\u0436\u0443\u0441\u044c \u0432 \u0441\u0435\u0440\u0435\u0434\u0438\u043d\u0435 \u043d\u0430\u0431\u043e\u0440\u0430 \u0447\u0438\u0441\u043b\u0430, \u043b\u0438\u0431\u043e &#8212; \u043d\u0435\u0442.<br \/>\n\u041d\u043e \u043a\u0430\u043a \u0442\u043e\u043b\u044c\u043a\u043e \u044f \u0434\u043e\u0431\u0430\u0432\u0438\u043b \u0442\u0438\u043f <strong><span style=\"color: #0000ff;\">Bool<\/span><\/strong>, \u044f \u043f\u043e\u043b\u0443\u0447\u0438\u043b \u043e\u0448\u0438\u0431\u043a\u0443. \u0412\u0438\u0434\u0438\u0442\u0435 \u043e\u0448\u0438\u0431\u043a\u0443? \u041d\u043e \u043f\u043e\u0447\u0435\u043c\u0443 \u043e\u043d\u0430 \u043f\u043e\u044f\u0432\u0438\u043b\u0430\u0441\u044c \u0432 \u0432\u0435\u0440\u0445\u043d\u0435\u0439 \u0447\u0430\u0441\u0442\u0438 \u043a\u043e\u0434\u0430, \u0432\u0435\u0434\u044c \u044f \u0442\u0430\u043c \u043d\u0438\u0447\u0435\u0433\u043e \u043d\u0435 \u0434\u0435\u043b\u0430\u043b? \u0414\u0430\u0432\u0430\u0439\u0442\u0435 \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0438\u043c, \u0447\u0442\u043e \u0437\u0430 \u043e\u0448\u0438\u0431\u043a\u0430?<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.52.31-PM.png\" rel=\"attachment wp-att-4581\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4581 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.52.31-PM.png\" alt=\"Screen Shot 2016-04-27 at 6.52.31 PM\" width=\"1502\" height=\"688\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.52.31-PM.png 1502w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.52.31-PM-300x137.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.52.31-PM-768x352.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.52.31-PM-1024x469.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-6.52.31-PM-500x229.png 500w\" sizes=\"auto, (max-width: 1502px) 100vw, 1502px\" \/><\/a><\/p>\n<p>\u0423 \u043a\u043b\u0430\u0441\u0441\u0430 <strong><span style=\"color: #0000ff;\">ViewController<\/span><\/strong> \u043d\u0435\u0442 \u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u043e\u0432. \u0412\u044b \u0431\u0443\u0434\u0435\u0442\u0435 \u0434\u0435\u043b\u0430\u0442\u044c \u0432\u0430\u0448\u0435 \u0414\u043e\u043c\u0430\u0448\u043d\u0435\u0435 \u0417\u0430\u0434\u0430\u043d\u0438\u0435 \u0438 \u0443 \u0432\u0430\u0441 \u0431\u0443\u0434\u0435\u0442 \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442\u044c \u0442\u043e \u0436\u0435 \u0441\u0430\u043c\u043e\u0435, \u0432\u044b \u0431\u0443\u0434\u0435\u0442\u0435 \u0443\u0434\u0438\u0432\u043b\u044f\u0442\u044c\u0441\u044f: &#171;\u0427\u0442\u043e \u0442\u0430\u043a\u043e\u0435? \u042f \u043d\u0438\u0447\u0435\u0433\u043e \u043d\u0435 \u0441\u0434\u0435\u043b\u0430\u043b, \u043f\u0440\u043e\u0441\u0442\u043e \u043d\u0430\u043f\u0435\u0447\u0430\u0442\u0430\u043b \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e <strong><span style=\"color: #0000ff;\">var<\/span><\/strong>?&#187; \u0427\u0442\u043e \u043e\u0437\u043d\u0430\u0447\u0430\u0435\u0442 \u044d\u0442\u0430 \u043e\u0448\u0438\u0431\u043a\u0430? \u041c\u044b \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u0438 \u0441 \u0432\u0430\u043c\u0438 \u043e\u0448\u0438\u0431\u043a\u0443 \u043f\u043e\u0442\u043e\u043c\u0443, \u0447\u0442\u043e \u0432\u00a0<strong>Swift<\/strong> \u0432\u0441\u0435 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0430 (<strong>properties<\/strong>), \u0430\u0431\u0441\u043e\u043b\u044e\u0442\u043d\u043e \u043a\u0430\u0436\u0434\u043e\u0435 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e, \u0434\u043e\u043b\u0436\u043d\u043e \u0438\u043c\u0435\u0442\u044c <span style=\"text-decoration: underline;\">\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435<\/span>. \u0412\u0430\u043c \u043d\u0435 \u0440\u0430\u0437\u0440\u0435\u0448\u0430\u0435\u0442\u0441\u044f \u0438\u043c\u0435\u0442\u044c \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0430, \u0443 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u043d\u0435\u0442 \u043d\u0430\u0447\u0430\u043b\u044c\u043d\u044b\u0445 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0439. \u041a\u0430\u043a \u043c\u044b \u0434\u0430\u0434\u0438\u043c \u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u044d\u0442\u043e\u043c\u0443 <strong><span style=\"color: #0000ff;\">Bool<\/span><\/strong> \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0443?<br \/>\n\u0415\u0441\u0442\u044c \u0434\u0432\u0430 \u0441\u043f\u043e\u0441\u043e\u0431\u0430. \u041e\u0434\u0438\u043d \u0441\u043f\u043e\u0441\u043e\u0431 &#8212; \u044d\u0442\u043e \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0435 \u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u0430, \u043e \u0447\u0435\u043c, \u0441\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u043e, \u0438 \u0433\u043e\u0432\u043e\u0440\u0438\u0442 \u043f\u0440\u0435\u0434\u0443\u043f\u0440\u0435\u0436\u0434\u0435\u043d\u0438\u0435. \u041d\u043e \u044f \u043d\u0435 \u0441\u043e\u0431\u0438\u0440\u0430\u044e\u0441\u044c \u0433\u043e\u0432\u043e\u0440\u0438\u0442\u044c \u043e\u0431 \u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u0430\u0445 \u0440\u0430\u043d\u044c\u0448\u0435 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0439 \u043d\u0435\u0434\u0435\u043b\u0438. \u042f \u043d\u0435 \u043c\u043e\u0433\u0443 \u044d\u0442\u043e\u0433\u043e \u0441\u0434\u0435\u043b\u0430\u0442\u044c \u0441\u0435\u0439\u0447\u0430\u0441, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u044f \u0435\u0449\u0435 \u043d\u0435 \u0433\u043e\u0432\u043e\u0440\u0438\u043b \u043e\u0431 \u044d\u0442\u043e\u043c. \u041a\u0430\u043a\u043e\u0439 \u0434\u0440\u0443\u0433\u043e\u0439 \u0441\u043f\u043e\u0441\u043e\u0431 \u043c\u044b \u043c\u043e\u0436\u0435\u043c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c?<\/p>\n<p>\u041c\u044b \u043c\u043e\u0436\u0435\u043c \u043f\u0440\u043e\u0441\u0442\u043e \u043d\u0430\u043f\u0438\u0441\u0430\u0442\u044c<strong><span style=\"color: #0000ff;\"> = false<\/span><\/strong>. \u041c\u044b \u043f\u0440\u043e\u0441\u0442\u043e \u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u0443\u0435\u043c \u043d\u0430\u0448\u0435 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e, \u0438 \u043e\u0448\u0438\u0431\u043a\u0430 \u0443\u0439\u0434\u0435\u0442.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.06.05-PM.png\" rel=\"attachment wp-att-4582\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4582 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.06.05-PM.png\" alt=\"Screen Shot 2016-04-27 at 7.06.05 PM\" width=\"1500\" height=\"680\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.06.05-PM.png 1500w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.06.05-PM-300x136.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.06.05-PM-768x348.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.06.05-PM-1024x464.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.06.05-PM-500x227.png 500w\" sizes=\"auto, (max-width: 1500px) 100vw, 1500px\" \/><\/a><br \/>\n\u0423\u0440\u0430! \u0423 \u043d\u0430\u0441 \u0432\u0441\u0435 \u043f\u043e\u043b\u0443\u0447\u0438\u043b\u043e\u0441\u044c, \u043d\u043e \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0438\u0437 \u0432\u0430\u0441 \u043c\u043e\u0433\u0443\u0442 \u0441\u043a\u0430\u0437\u0430\u0442\u044c: &#171;\u0410 \u043a\u0430\u043a \u0436\u0435 \u043d\u0430\u0441\u0447\u0435\u0442 <strong><span style=\"color: #0000ff;\">display<\/span><\/strong>? \u041c\u044b \u043d\u0435 \u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043b\u0438 \u044d\u0442\u043e \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e?&#187;<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.09.33-PM.png\" rel=\"attachment wp-att-4583\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4583 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.09.33-PM.png\" alt=\"Screen Shot 2016-04-27 at 7.09.33 PM\" width=\"1512\" height=\"676\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.09.33-PM.png 1512w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.09.33-PM-300x134.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.09.33-PM-768x343.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.09.33-PM-1024x458.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.09.33-PM-500x224.png 500w\" sizes=\"auto, (max-width: 1512px) 100vw, 1512px\" \/><\/a><\/p>\n<p>\u042d\u0442\u043e \u043f\u043e\u0442\u043e\u043c\u0443, \u0447\u0442\u043e \u0441 <strong><span style=\"color: #0000ff;\">Optionals<\/span><\/strong> \u043c\u044b \u0431\u0443\u0434\u0435\u043c \u043e\u0431\u0440\u0430\u0449\u0430\u0442\u044c\u0441\u044f \u043e\u0441\u043e\u0431\u044b\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c. \u041e\u043d\u0438 \u0432\u0441\u0435\u0433\u0434\u0430 \u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u0443\u044e\u0442\u0441\u044f \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u0441\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u043c &#171;<span style=\"text-decoration: underline;\">\u043d\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u043e<\/span>&#171;.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.14.27-PM.png\" rel=\"attachment wp-att-4584\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4584 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.14.27-PM.png\" alt=\"Screen Shot 2016-04-27 at 7.14.27 PM\" width=\"1488\" height=\"772\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.14.27-PM.png 1488w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.14.27-PM-300x156.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.14.27-PM-768x398.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.14.27-PM-1024x531.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.14.27-PM-500x259.png 500w\" sizes=\"auto, (max-width: 1488px) 100vw, 1488px\" \/><\/a><\/p>\n<p>\u042d\u0442\u043e \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0432\u0441\u0435\u0433\u0434\u0430, \u0435\u0441\u043b\u0438 \u0443 \u0432\u0430\u0441 \u0435\u0441\u0442\u044c\u00a0<strong><span style=\"color: #0000ff;\">var<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f <strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>. \u042d\u0442\u043e \u0438\u043c\u0435\u0435\u0442 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u044b\u0439 \u0441\u043c\u044b\u0441\u043b: \u00a0\u0443 \u0432\u0430\u0441 \u0435\u0441\u0442\u044c\u00a0\u00a0<strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>\u00a0\u0438 \u043e\u043d\u0430 \u0431\u0443\u0434\u0435\u0442 &#171;<span style=\"text-decoration: underline;\">\u043d\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u0430<\/span>&#187; \u0434\u043e \u0442\u0435\u0445 \u043f\u043e\u0440, \u043f\u043e\u043a\u0430 \u0432\u044b \u0435\u0435 \u043d\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u0435 \u0432\u043e \u0447\u0442\u043e-\u0442\u043e. \u0422\u0430\u043a \u0447\u0442\u043e \u0432\u0441\u0435\u00a0<strong><span style=\"color: #0000ff;\">Optionals<\/span><\/strong>\u00a0\u043d\u0430\u0447\u0438\u043d\u0430\u044e\u0442 \u0441\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f\u00a0&#171;<span style=\"text-decoration: underline;\">\u043d\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d\u043e<\/span>&#171;. \u0418\u043c\u0435\u043d\u043d\u043e \u043f\u043e\u044d\u0442\u043e\u043c\u0443 \u0441\u0447\u0438\u0442\u0430\u0435\u0442\u0441\u044f, \u0447\u0442\u043e \u0443 <strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>\u00a0\u0432\u0441\u0435\u0433\u0434\u0430 \u0435\u0441\u0442\u044c \u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435:<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.20.01-PM.png\" rel=\"attachment wp-att-4586\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4586 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.20.01-PM.png\" alt=\"Screen Shot 2016-04-27 at 7.20.01 PM\" width=\"1494\" height=\"704\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.20.01-PM.png 1494w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.20.01-PM-300x141.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.20.01-PM-768x362.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.20.01-PM-1024x483.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.20.01-PM-500x236.png 500w\" sizes=\"auto, (max-width: 1494px) 100vw, 1494px\" \/><\/a><\/p>\n<p>\u0415\u0449\u0435 \u044f \u0445\u043e\u0447\u0443 \u0441\u043f\u0440\u043e\u0441\u0438\u0442\u044c \u0432\u0430\u0441, \u043d\u0443\u0436\u043d\u043e \u043b\u0438 \u043d\u0430\u043c \u0434\u0435\u043a\u043b\u0430\u0440\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u00a0<strong><span style=\"color: #0000ff;\">: Bool<\/span><\/strong>?<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.23.06-PM.png\" rel=\"attachment wp-att-4587\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4587 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.23.06-PM.png\" alt=\"Screen Shot 2016-04-27 at 7.23.06 PM\" width=\"1490\" height=\"700\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.23.06-PM.png 1490w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.23.06-PM-300x141.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.23.06-PM-768x361.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.23.06-PM-1024x481.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.23.06-PM-500x235.png 500w\" sizes=\"auto, (max-width: 1490px) 100vw, 1490px\" \/><\/a><\/p>\n<p>\u041d\u0435\u0442. \u041f\u043e\u0447\u0435\u043c\u0443 \u043d\u0430\u043c \u044d\u0442\u043e \u043d\u0435 \u043d\u0443\u0436\u043d\u043e? \u041f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e\u00a0\u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 <strong><span style=\"color: #0000ff;\">false<\/span><\/strong> \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u0442\u043e\u043b\u044c\u043a\u043e \u0443 <strong><span style=\"color: #0000ff;\">Bool<\/span><\/strong>, \u0442\u0430\u043a \u0447\u0442\u043e <strong>Swift<\/strong> \u0441\u043c\u043e\u0436\u0435\u0442 &#171;\u0432\u044b\u0432\u0435\u0441\u0442\u0438 \u0442\u0438\u043f \u0438\u0437 \u043a\u043e\u043d\u0442\u0435\u043a\u0441\u0442\u0430&#187; (<strong>infer<\/strong>) \u0438 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c, \u0447\u0442\u043e \u044d\u0442\u043e \u0442\u0438\u043f\u00a0<strong><span style=\"color: #0000ff;\">Bool<\/span><\/strong>. \u0412\u0438\u0434\u0438\u0442\u0435?<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.27.19-PM.png\" rel=\"attachment wp-att-4588\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4588 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.27.19-PM.png\" alt=\"Screen Shot 2016-04-27 at 7.27.19 PM\" width=\"1490\" height=\"690\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.27.19-PM.png 1490w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.27.19-PM-300x139.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.27.19-PM-768x356.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.27.19-PM-1024x474.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.27.19-PM-500x232.png 500w\" sizes=\"auto, (max-width: 1490px) 100vw, 1490px\" \/><\/a><br \/>\n\u0422\u0435\u043f\u0435\u0440\u044c \u0434\u0430\u0432\u0430\u0439\u0442\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c <strong><span style=\"color: #0000ff;\">userIsInTheMiddleOfTyping<\/span><\/strong>, \u0438 \u0438\u043c\u0435\u043d\u043d\u043e \u0441 \u044d\u0442\u0438\u043c \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e\u043c \u043c\u044b \u043c\u043e\u0436\u0435\u043c \u043d\u0430\u043a\u0430\u043f\u043b\u0438\u0432\u0430\u0442\u044c \u0446\u0438\u0444\u0440\u044b \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0435 <strong><span style=\"color: #0000ff;\">display<\/span><\/strong> \u0438\u043b\u0438 \u043d\u0430\u0447\u0438\u043d\u0430\u0442\u044c \u0432\u0441\u0435 \u0441\u043d\u0430\u0447\u0430\u043b\u0430. \u041c\u044b \u0431\u0443\u0434\u0435\u043c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c <strong><span style=\"color: #0000ff;\">if<\/span> <\/strong>\u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u0435.<\/p>\n<p><span style=\"color: #3366ff;\">&#8212;&#8212;&#8212;&#8212;&#8212;&#8212; 70-\u0430\u044f \u043c\u0438\u043d\u0443\u0442\u0430 \u041b\u0435\u043a\u0446\u0438\u0438 &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;<\/span><\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.31.32-PM.png\" rel=\"attachment wp-att-4589\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4589 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.31.32-PM.png\" alt=\"Screen Shot 2016-04-27 at 7.31.32 PM\" width=\"1520\" height=\"814\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.31.32-PM.png 1520w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.31.32-PM-300x161.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.31.32-PM-768x411.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.31.32-PM-1024x548.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.31.32-PM-500x268.png 500w\" sizes=\"auto, (max-width: 1520px) 100vw, 1520px\" \/><\/a><br \/>\n\u0415\u0441\u043b\u0438 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u0432 \u0441\u0435\u0440\u0435\u0434\u0438\u043d\u0435 \u043d\u0430\u0431\u043e\u0440\u0430 \u0447\u0438\u0441\u043b\u0430, \u0442\u043e \u043c\u044b \u0431\u0443\u0434\u0435\u043c \u043d\u0430\u043a\u0430\u043f\u043b\u0438\u0432\u0430\u0442\u044c \u0446\u0438\u0444\u0440\u044b, \u0435\u0441\u043b\u0438 \u043d\u0435\u0442, \u0442\u043e \u043c\u044b \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0435\u043c \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0435\u00a0<strong><span style=\"color: #0000ff;\">display<\/span><\/strong> \u043d\u0430\u043f\u0435\u0447\u0430\u0442\u0430\u043d\u043d\u0443\u044e \u0446\u0438\u0444\u0440\u0443. \u0415\u0441\u043b\u0438 \u044f \u043d\u0430\u0447\u0438\u043d\u0430\u044e \u043f\u0435\u0447\u0430\u0442\u0430\u0442\u044c &#171;5&#187; \u0438\u043b\u0438 \u0447\u0442\u043e-\u0442\u043e \u0435\u0449\u0435, \u0442\u043e \u044d\u0442\u043e \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0437\u0430\u043c\u0435\u043d\u0438\u0442 \u0432\u0441\u0435, \u0447\u0442\u043e \u0431\u044b\u043b\u043e \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0435\u00a0<strong><span style=\"color: #0000ff;\">display<\/span><\/strong>\u00a0\u0434\u043e \u044d\u0442\u043e\u0433\u043e. \u0418, \u043a\u043e\u043d\u0435\u0447\u043d\u043e, \u0432 \u043b\u044e\u0431\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u043c\u044b \u0434\u043e\u043b\u0436\u043d\u044b \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c <strong><span style=\"color: #0000ff;\">userIsInTheMiddleOfTyping<\/span><\/strong>\u00a0\u0432 <strong><span style=\"color: #0000ff;\">true<\/span><\/strong>, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u043a\u0430\u043a \u0442\u043e\u043b\u044c\u043a\u043e \u043c\u044b \u043a\u043e\u0441\u043d\u0443\u043b\u0438\u0441\u044c \u0446\u0438\u0444\u0440\u044b\u00a0<strong><span style=\"color: #0000ff;\">digit<\/span><\/strong>, \u043c\u044b \u0443\u0436\u0435 \u043d\u0430\u0445\u043e\u0434\u0438\u043c\u0441\u044f \u0432 \u0441\u0435\u0440\u0435\u0434\u0438\u043d\u0435 \u043d\u0430\u0431\u043e\u0440\u0430 \u0447\u0438\u0441\u043b\u0430.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.42.12-PM.png\" rel=\"attachment wp-att-4590\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4590 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.42.12-PM.png\" alt=\"Screen Shot 2016-04-27 at 7.42.12 PM\" width=\"1494\" height=\"822\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.42.12-PM.png 1494w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.42.12-PM-300x165.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.42.12-PM-768x423.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.42.12-PM-1024x563.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.42.12-PM-500x275.png 500w\" sizes=\"auto, (max-width: 1494px) 100vw, 1494px\" \/><\/a><br \/>\n\u0422\u0435\u043f\u0435\u0440\u044c \u044f \u0443\u0436\u0435 \u043f\u043e\u0440\u044f\u0434\u043a\u043e\u043c \u0443\u0441\u0442\u0430\u043b \u043e\u0442 \u043f\u0435\u0447\u0430\u0442\u0430\u043d\u0438\u044f \u043a\u0430\u0436\u0434\u044b\u0439 \u0440\u0430\u0437\u00a0<strong><span style=\"color: #0000ff;\">display<\/span><\/strong> \u0441\u00a0\u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u043c<strong><span style=\"color: #0000ff;\">\u00a0!<\/span>\u00a0<\/strong>\u0437\u043d\u0430\u043a\u043e\u043c. \u041a\u0430\u0436\u0434\u044b\u0439 \u0440\u0430\u0437, \u043a\u043e\u0433\u0434\u0430 \u044f \u043f\u0435\u0447\u0430\u0442\u0430\u044e\u00a0<strong><span style=\"color: #0000ff;\">display<\/span><\/strong>\u00a0\u0441\u00a0\u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u043c<strong><span style=\"color: #0000ff;\">\u00a0!<\/span>\u00a0<\/strong>\u0437\u043d\u0430\u043a\u043e\u043c, \u044f, \u0444\u0430\u043a\u0442\u0438\u0447\u0435\u0441\u043a\u0438, \u0442\u043e\u0447\u043d\u043e \u0437\u043d\u0430\u044e, \u0447\u0442\u043e\u00a0\u00a0<strong><span style=\"color: #0000ff;\">display<\/span><\/strong>\u00a0\u0432\u0441\u0435\u0433\u0434\u0430 &#171;<span style=\"text-decoration: underline;\">\u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d<\/span>&#171;. \u0415\u0434\u0438\u043d\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u0440\u0430\u0437, \u043a\u043e\u0433\u0434\u0430 \u043e\u043d &#171;<span style=\"text-decoration: underline;\">\u043d\u0435 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d<\/span>&#187; \u0438 \u0434\u043b\u0438\u0442\u0441\u044f \u044d\u0442\u043e \u043d\u0430\u043d\u043e\u0441\u0435\u043a\u0443\u043d\u0434\u0443, \u044d\u0442\u043e \u043a\u043e\u0433\u0434\u0430 \u043e\u043d \u043d\u0430\u0447\u0438\u043d\u0430\u0435\u0442 \u043f\u043e\u044f\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u043d\u0430 \u044d\u043a\u0440\u0430\u043d\u0435, \u043f\u0435\u0440\u0435\u0434 \u0442\u0435\u043c, \u043a\u0430\u043a \u0443\u00a0iOS \u043f\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0448\u0430\u043d\u0441 &#171;\u043f\u043e\u0434\u0432\u044f\u0437\u0430\u0442\u044c&#187; \u0435\u0433\u043e \u043a \u043d\u0430\u0448\u0435\u0439 \u043c\u0435\u0442\u043a\u0435\u00a0<strong><span style=\"color: #0000ff;\">UILabel<\/span><\/strong>. \u041d\u043e \u043a\u0430\u043a \u0442\u043e\u043b\u044c\u043a\u043e \u043e\u043d &#171;\u043f\u043e\u0434\u0432\u044f\u0437\u0430\u043d&#187;, \u043e\u043d &#171;<span style=\"text-decoration: underline;\">\u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d<\/span>&#187; \u043d\u0430\u0432\u0441\u0435\u0433\u0434\u0430. \u0418, \u043a\u043e\u043d\u0435\u0447\u043d\u043e, \u043a\u043e\u0433\u0434\u0430 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c \u043a\u0430\u0441\u0430\u0435\u0442\u0441\u044f \u043a\u043d\u043e\u043f\u043e\u043a \u0441 \u0446\u0438\u0444\u0440\u0430\u043c\u0438, \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u0441\u043a\u0438\u0439 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441 (UI) \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u043d\u0430 \u044d\u043a\u0440\u0430\u043d\u0435, \u0432\u0441\u0435 &#171;\u043f\u043e\u0434\u0432\u044f\u0437\u0430\u043d\u043e&#187; \u0438 \u044f \u0442\u043e\u0447\u043d\u043e \u0437\u043d\u0430\u044e, \u0447\u0442\u043e <strong><span style=\"color: #0000ff;\">display<\/span><\/strong> \u043d\u0438\u043a\u043e\u0433\u0434\u0430 \u043d\u0435 \u0431\u0443\u0434\u0435\u0442 \u0440\u0430\u0432\u0435\u043d\u00a0<strong><span style=\"color: #0000ff;\">nil<\/span><\/strong>. \u041d\u0438\u043a\u043e\u0433\u0434\u0430 \u0432 \u044d\u0442\u043e\u043c \u043a\u043e\u0434\u0435. \u0422\u0430\u043a \u043f\u043e\u0447\u0435\u043c\u0443 \u0436\u0435 \u044f \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u044e \u0441\u043d\u043e\u0432\u0430 \u0438 \u0441\u043d\u043e\u0432\u0430 \u043d\u0430\u0431\u0438\u0440\u0430\u0442\u044c <strong><span style=\"color: #0000ff;\">display<\/span><\/strong>\u00a0\u0441\u00a0\u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u043c<strong><span style=\"color: #0000ff;\">\u00a0!<\/span>\u00a0<\/strong>\u0437\u043d\u0430\u043a\u043e\u043c? \u041e\u0442\u0432\u0435\u0442 \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u043c\u044b \u043d\u0435 \u0434\u043e\u043b\u0436\u043d\u044b \u044d\u0442\u043e\u0433\u043e \u0434\u0435\u043b\u0430\u0442\u044c, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u043c\u044b \u0432\u0435\u0440\u043d\u0435\u043c\u0441\u044f \u043d\u0430\u0437\u0430\u0434 \u0438 \u0437\u0430\u043c\u0435\u043d\u0438\u043c\u00a0\u0432\u043e\u043f\u0440\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 <strong><span style=\"color: #0000ff;\"><span style=\"color: #0000ff;\">?<\/span><\/span>\u00a0<\/strong>\u0437\u043d\u0430\u043a\u00a0\u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u043c<strong><span style=\"color: #0000ff;\">\u00a0!<\/span>\u00a0<\/strong>\u0437\u043d\u0430\u043a\u043e\u043c.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.57.16-PM.png\" rel=\"attachment wp-att-4591\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4591 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.57.16-PM.png\" alt=\"Screen Shot 2016-04-27 at 7.57.16 PM\" width=\"1490\" height=\"806\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.57.16-PM.png 1490w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.57.16-PM-300x162.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.57.16-PM-768x415.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.57.16-PM-1024x554.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-7.57.16-PM-500x270.png 500w\" sizes=\"auto, (max-width: 1490px) 100vw, 1490px\" \/><\/a><br \/>\n\u0415\u0441\u043b\u0438 \u0432\u044b \u0440\u0430\u0437\u043c\u0435\u0441\u0442\u0438\u043b\u0438 \u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439<strong><span style=\"color: #0000ff;\">\u00a0!<\/span>\u00a0<\/strong>\u0437\u043d\u0430\u043a \u043f\u0440\u0438 \u0434\u0435\u043a\u043b\u0430\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438, \u0442\u043e \u044d\u0442\u043e \u0433\u043e\u0432\u043e\u0440\u0438\u0442 \u043e \u0442\u043e\u043c, \u0447\u0442\u043e \u043b\u044e\u0431\u043e\u0439 \u043c\u043e\u0436\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u044d\u0442\u043e \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e \u0438 \u043e\u043d\u043e \u0431\u0443\u0434\u0435\u0442 &#171;\u043d\u0435\u044f\u0432\u043d\u043e \u0440\u0430\u0437\u0432\u0435\u0440\u043d\u0443\u0442\u043e&#187; (<strong>implicitly<\/strong> <strong>unwrap<\/strong>). \u041e\u043d\u043e \u0431\u0443\u0434\u0435\u0442 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438 &#171;\u0440\u0430\u0437\u0432\u043e\u0440\u0430\u0447\u0438\u0432\u0430\u0442\u044c\u0441\u044f&#187;. \u041d\u043e \u0435\u0441\u043b\u0438 \u043e\u043d\u043e \u0440\u0430\u0437\u0432\u043e\u0440\u0430\u0447\u0438\u0432\u0430\u0435\u0442\u0441\u044f, \u043a\u043e\u0433\u0434\u0430 \u043e\u043d\u043e \u0440\u0430\u0432\u043d\u043e\u00a0<strong><span style=\"color: #0000ff;\">nil<\/span><\/strong>, \u0442\u043e \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0430\u0432\u0430\u0440\u0438\u0439\u043d\u043e\u0435 \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f. \u0418\u0442\u0430\u043a, \u044d\u0442\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043c\u043d\u0435 \u0438\u0437\u0431\u0430\u0432\u0438\u0442\u044c\u0441\u044f \u043e\u0442 \u0432\u0441\u0435\u0445\u00a0\u00a0\u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0445<strong><span style=\"color: #0000ff;\">\u00a0!<\/span>\u00a0<\/strong>\u0437\u043d\u0430\u043a\u043e\u0432, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u043f\u0440\u0438 \u0434\u0435\u043a\u043b\u0430\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438 \u0432\u043c\u0435\u0441\u0442\u043e\u00a0\u0432\u043e\u043f\u0440\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e\u00a0<strong><span style=\"color: #0000ff;\"><span style=\"color: #0000ff;\">?<\/span><\/span>\u00a0<\/strong>\u0437\u043d\u0430\u043a\u0430 \u044f \u0440\u0430\u0437\u043c\u0435\u0441\u0442\u0438\u043b \u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439<strong><span style=\"color: #0000ff;\">\u00a0!<\/span>\u00a0<\/strong>\u0437\u043d\u0430\u043a.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM.png\" rel=\"attachment wp-att-4595\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4595 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM.png\" alt=\"Screen Shot 2016-04-27 at 8.20.26 PM\" width=\"1502\" height=\"834\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM.png 1502w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM-300x167.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM-768x426.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM-1024x569.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM-500x278.png 500w\" sizes=\"auto, (max-width: 1502px) 100vw, 1502px\" \/><\/a><\/p>\n<p>\u0412\u0441\u0435 \u044d\u0442\u043e \u043f\u043e\u043d\u044f\u043b\u0438?<\/p>\n<p>\u0418 \u043e\u043f\u044f\u0442\u044c, \u0435\u0441\u043b\u0438 \u044f \u0432\u0435\u0440\u043d\u0443\u0441\u044c \u043d\u0430\u0437\u0430\u0434 \u0438 \u0432\u043e\u0441\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u044e \u0432\u043e\u043f\u0440\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439\u00a0<strong><span style=\"color: #0000ff;\"><span style=\"color: #0000ff;\">?<\/span><\/span>\u00a0<\/strong>\u0437\u043d\u0430\u043a \u043f\u0440\u0438 \u0434\u0435\u043a\u043b\u0430\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438, \u0442\u043e \u044f \u043f\u043e\u043b\u0443\u0447\u0443 \u043e\u0448\u0438\u0431\u043a\u0438, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u044f &#171;\u043d\u0435 \u0440\u0430\u0437\u0432\u0435\u0440\u043d\u0443\u043b&#187;\u00a0<strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>,<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.09.18-PM.png\" rel=\"attachment wp-att-4594\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4594 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.09.18-PM.png\" alt=\"Screen Shot 2016-04-27 at 8.09.18 PM\" width=\"1514\" height=\"796\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.09.18-PM.png 1514w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.09.18-PM-300x158.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.09.18-PM-768x404.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.09.18-PM-1024x538.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.09.18-PM-500x263.png 500w\" sizes=\"auto, (max-width: 1514px) 100vw, 1514px\" \/><\/a><\/p>\n<p>\u043d\u043e, \u0435\u0441\u043b\u0438 \u044f \u043e\u043f\u044f\u0442\u044c \u043f\u043e\u043c\u0435\u0449\u0443 \u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439<strong><span style=\"color: #0000ff;\">\u00a0!<\/span>\u00a0<\/strong>\u0437\u043d\u0430\u043a \u043f\u0440\u0438 \u0434\u0435\u043a\u043b\u0430\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0438, \u0442\u043e \u0442\u0435\u043f\u0435\u0440\u044c \u0434\u0435\u043a\u043b\u0430\u0440\u0438\u0440\u0443\u0435\u043c\u043e\u0435 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e <span style=\"text-decoration: underline;\">\u0432\u0435\u0437\u0434\u0435<\/span> \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f &#171;\u043d\u0435\u044f\u0432\u043d\u043e \u0440\u0430\u0437\u0432\u0435\u0440\u043d\u0443\u0442\u044b\u043c&#187; (<strong>implicitly<\/strong>\u00a0<strong>unwrapping<\/strong>). \u042d\u0442\u043e \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f\u00a0<strong><span style=\"color: #0000ff;\">implicitly unwrap Optional<\/span> <\/strong>(\u043d\u0435\u044f\u0432\u043d\u043e \u0440\u0430\u0437\u0432\u0435\u0440\u043d\u0443\u0442\u043e\u0435 <strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>). \u042d\u0442\u043e \u043e\u0447\u0435\u043d\u044c \u0432\u0430\u0436\u043d\u043e.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM.png\" rel=\"attachment wp-att-4595\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4595 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM.png\" alt=\"Screen Shot 2016-04-27 at 8.20.26 PM\" width=\"1502\" height=\"834\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM.png 1502w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM-300x167.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM-768x426.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM-1024x569.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.20.26-PM-500x278.png 500w\" sizes=\"auto, (max-width: 1502px) 100vw, 1502px\" \/><\/a><\/p>\n<p>\u0422\u0435\u043f\u0435\u0440\u044c \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u043c \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u0438 \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0438\u043c, \u0438\u0441\u043f\u0440\u0430\u0432\u0438\u043b\u0438\u0441\u044c \u043b\u0438 \u043d\u0430\u0448\u0438 \u043e\u0448\u0438\u0431\u043a\u0438?<\/p>\n<p>\u041d\u0430\u0436\u0438\u043c\u0430\u0435\u043c &#171;5&#187; &#8212; \u0438\u0437\u0431\u0430\u0432\u0438\u043b\u0438\u0441\u044c \u043e\u0442 \u043d\u0443\u043b\u044f. \u0412\u0441\u0435 \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.24.27-PM.png\" rel=\"attachment wp-att-4596\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4596 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.24.27-PM.png\" alt=\"Screen Shot 2016-04-27 at 8.24.27 PM\" width=\"1476\" height=\"1396\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.24.27-PM.png 1476w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.24.27-PM-300x284.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.24.27-PM-768x726.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.24.27-PM-1024x968.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.24.27-PM-317x300.png 317w\" sizes=\"auto, (max-width: 1476px) 100vw, 1476px\" \/><\/a><br \/>\n\u041c\u044b \u043f\u0440\u043e\u0434\u0435\u043b\u0430\u043b\u0438 \u043f\u0440\u0435\u043a\u0440\u0430\u0441\u043d\u0443\u044e \u0440\u0430\u0431\u043e\u0442\u0443 \u0438 \u043d\u0430\u0448\u0430 \u0446\u0438\u0444\u0440\u043e\u0432\u0430\u044f \u043a\u043b\u0430\u0432\u0438\u0430\u0442\u0443\u0440\u0430 \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u0442.<\/p>\n<p>\u0422\u0435\u043f\u0435\u0440\u044c \u043d\u0430\u043c \u043d\u0443\u0436\u043d\u043e \u0434\u043e\u0431\u0430\u0432\u0438\u0442\u044c \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438. \u0418\u0437-\u0437\u0430 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u043d\u043e\u0433\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u044f \u0434\u043e\u0431\u0430\u0432\u043b\u044e \u0442\u043e\u043b\u044c\u043a\u043e \u043a\u043d\u043e\u043f\u043a\u0443 \u0441 ?. \u042d\u0442\u043e \u043e\u0447\u0435\u043d\u044c \u043f\u0440\u043e\u0441\u0442\u0430\u044f \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044f, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0435\u00a0<strong><span style=\"color: #0000ff;\">display<\/span><\/strong> \u0440\u0430\u0437\u043c\u0435\u0449\u0430\u0435\u0442\u0441\u044f \u00a0?. \u0414\u0430\u0432\u0430\u0439\u0442\u0435 \u0441\u0434\u0435\u043b\u0430\u0435\u043c \u044d\u0442\u043e. \u042f \u0441\u043e\u0431\u0438\u0440\u0430\u044e\u0441\u044c \u0441\u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0438 \u0432\u0441\u0442\u0430\u0432\u0438\u0442\u044c \u043a\u043d\u043e\u043f\u043a\u0443 &#171;7&#187;.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.57.33-PM.png\" rel=\"attachment wp-att-4597\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4597 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.57.33-PM.png\" alt=\"Screen Shot 2016-04-27 at 8.57.33 PM\" width=\"2230\" height=\"1284\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.57.33-PM.png 2230w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.57.33-PM-300x173.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.57.33-PM-768x442.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.57.33-PM-1024x590.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-8.57.33-PM-500x288.png 500w\" sizes=\"auto, (max-width: 2230px) 100vw, 2230px\" \/><\/a><br \/>\n\u0412 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438, \u044d\u0442\u043e \u043e\u0447\u0435\u043d\u044c \u043f\u043b\u043e\u0445\u0430\u044f \u0438\u0434\u0435\u044f, \u0438 \u0432\u044b \u0443\u0432\u0438\u0434\u0438\u0442\u0435 \u044d\u0442\u043e \u0447\u0435\u0440\u0435\u0437 \u0441\u0435\u043a\u0443\u043d\u0434\u0443. \u041d\u043e \u044f \u0441\u0434\u0435\u043b\u0430\u044e \u044d\u0442\u043e \u0438 \u043d\u0430\u0437\u043e\u0432\u0443 \u044d\u0442\u0443 \u043a\u043d\u043e\u043f\u043a\u0443 ?.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.01.18-PM.png\" rel=\"attachment wp-att-4598\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4598 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.01.18-PM.png\" alt=\"Screen Shot 2016-04-27 at 9.01.18 PM\" width=\"2124\" height=\"1126\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.01.18-PM.png 2124w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.01.18-PM-300x159.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.01.18-PM-768x407.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.01.18-PM-1024x543.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.01.18-PM-500x265.png 500w\" sizes=\"auto, (max-width: 2124px) 100vw, 2124px\" \/><\/a><\/p>\n<p>\u041a\u043e\u043d\u0435\u0447\u043d\u043e, ? &#8212; \u044d\u0442\u043e \u043d\u0435 \u0446\u0438\u0444\u0440\u0430. \u042d\u0442\u043e \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044f \u0438 \u044f \u0432\u044b\u043f\u043e\u043b\u043d\u044e\u00a0<strong>CTRL<\/strong>-\u043f\u0435\u0440\u0435\u0442\u044f\u0433\u0438\u0432\u0430\u043d\u0438\u0435, \u0447\u0442\u043e\u0431\u044b \u0441\u043e\u0437\u0434\u0430\u0442\u044c \u043d\u043e\u0432\u044b\u0439 \u0434\u0440\u0443\u0433\u043e\u0439 <strong>Action<\/strong>, \u043e\u0442\u043b\u0438\u0447\u043d\u044b\u0439 \u043e\u0442 \u0442\u043e\u0433\u043e, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0431\u044b\u043b \u0441\u043e\u0437\u0434\u0430\u043d \u0434\u043b\u044f \u0446\u0438\u0444\u0440.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.03.56-PM.png\" rel=\"attachment wp-att-4599\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4599 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.03.56-PM.png\" alt=\"Screen Shot 2016-04-27 at 9.03.56 PM\" width=\"2208\" height=\"1252\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.03.56-PM.png 2208w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.03.56-PM-300x170.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.03.56-PM-768x435.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.03.56-PM-1024x581.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.03.56-PM-500x284.png 500w\" sizes=\"auto, (max-width: 2208px) 100vw, 2208px\" \/><\/a><br \/>\n\u042d\u0442\u043e\u0442 <strong>Action<\/strong> \u043d\u0430\u0437\u043e\u0432\u0435\u043c <strong><span style=\"color: #0000ff;\">performOperation<\/span><\/strong>, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u00a0? &#8212; \u044d\u0442\u043e \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044f. \u0412\u0441\u0435 \u043a\u043d\u043e\u043f\u043a\u0438 \u0441 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044f\u043c\u0438 \u0431\u0443\u0434\u0443\u0442 \u0438\u043c\u0435\u0442\u044c <strong>Action<\/strong>\u00a0\u0441 \u0438\u043c\u0435\u043d\u0435\u043c\u00a0<strong><span style=\"color: #0000ff;\">performOperation<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.08.49-PM.png\" rel=\"attachment wp-att-4600\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4600 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.08.49-PM.png\" alt=\"Screen Shot 2016-04-27 at 9.08.49 PM\" width=\"2164\" height=\"1224\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.08.49-PM.png 2164w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.08.49-PM-300x170.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.08.49-PM-768x434.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.08.49-PM-1024x579.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.08.49-PM-500x283.png 500w\" sizes=\"auto, (max-width: 2164px) 100vw, 2164px\" \/><\/a><\/p>\n<p>\u0418 \u043d\u0435 \u0437\u0430\u0431\u0443\u0434\u044c\u0442\u0435 \u0437\u0430\u043c\u0435\u043d\u0438\u0442\u044c <strong><span style=\"color: #0000ff;\">AnyObject<\/span><\/strong> \u043d\u0430 <strong><span style=\"color: #0000ff;\">UIButton<\/span><\/strong>, \u043a\u0430\u043a \u0438 \u0432 \u0432\u0430\u0448\u0435\u043c \u0414\u043e\u043c\u0430\u0448\u043d\u0435\u043c \u0417\u0430\u0434\u0430\u043d\u0438\u0438.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.10.03-PM.png\" rel=\"attachment wp-att-4601\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4601 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.10.03-PM.png\" alt=\"Screen Shot 2016-04-27 at 9.10.03 PM\" width=\"2162\" height=\"1216\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.10.03-PM.png 2162w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.10.03-PM-300x169.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.10.03-PM-768x432.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.10.03-PM-1024x576.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.10.03-PM-500x281.png 500w\" sizes=\"auto, (max-width: 2162px) 100vw, 2162px\" \/><\/a><\/p>\n<p>\u041d\u0430\u0436\u0438\u043c\u0430\u0435\u043c \u043a\u043d\u043e\u043f\u043a\u0443 <strong>Connect<\/strong> \u0438 \u043f\u043e\u043b\u0443\u0447\u0430\u0435\u043c <strong><span style=\"color: #0000ff;\">performOperation<\/span><\/strong> \u043f\u0440\u044f\u043c\u043e \u0437\u0434\u0435\u0441\u044c:<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.12.54-PM.png\" rel=\"attachment wp-att-4602\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4602 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.12.54-PM.png\" alt=\"Screen Shot 2016-04-27 at 9.12.54 PM\" width=\"2178\" height=\"1182\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.12.54-PM.png 2178w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.12.54-PM-300x163.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.12.54-PM-768x417.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.12.54-PM-1024x556.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-27-at-9.12.54-PM-500x271.png 500w\" sizes=\"auto, (max-width: 2178px) 100vw, 2178px\" \/><\/a><\/p>\n<p>\u0412 <strong><span style=\"color: #0000ff;\">performOperation<\/span><\/strong> \u044f \u0441\u0434\u0435\u043b\u0430\u044e \u0442\u043e \u0436\u0435 \u0441\u0430\u043c\u043e\u0435, \u0447\u0442\u043e \u044f \u0434\u0435\u043b\u0430\u043b \u0432 \u043d\u0430\u0447\u0430\u043b\u0435 \u043c\u0435\u0442\u043e\u0434\u0430\u00a0<strong><span style=\"color: #0000ff;\">touchDigit<\/span><\/strong>. \u042f \u0441\u043f\u0440\u043e\u0448\u0443\u00a0<strong><span style=\"color: #0000ff;\">sender<\/span><\/strong>, \u043a\u0430\u043a\u0443\u044e \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044e \u043e\u043d \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442?<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.25.03-AM.png\" rel=\"attachment wp-att-4604\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4604 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.25.03-AM.png\" alt=\"Screen Shot 2016-04-28 at 8.25.03 AM\" width=\"1482\" height=\"176\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.25.03-AM.png 1482w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.25.03-AM-300x36.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.25.03-AM-768x91.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.25.03-AM-1024x122.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.25.03-AM-500x59.png 500w\" sizes=\"auto, (max-width: 1482px) 100vw, 1482px\" \/><\/a><\/p>\n<p>\u041a\u043e\u043d\u0435\u0447\u043d\u043e, \u043c\u043d\u0435 \u043d\u0443\u0436\u043d\u0430 \u0441\u0442\u0440\u043e\u043a\u0430 <strong><span style=\"color: #0000ff;\">String<\/span><\/strong> \u0438 \u044f \u0441\u0442\u0430\u0432\u043b\u044e \u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439<strong><span style=\"color: #0000ff;\">\u00a0!<\/span>\u00a0<\/strong>\u0437\u043d\u0430\u043a. \u041d\u043e \u0435\u0441\u043b\u0438 \u043d\u0430 \u043a\u043d\u043e\u043f\u043a\u0435 \u043f\u0443\u0441\u0442\u043e\u0439 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u043a,<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.28.24-AM.png\" rel=\"attachment wp-att-4606\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4606 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.28.24-AM.png\" alt=\"Screen Shot 2016-04-28 at 8.28.24 AM\" width=\"2184\" height=\"1222\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.28.24-AM.png 2184w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.28.24-AM-300x168.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.28.24-AM-768x430.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.28.24-AM-1024x573.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.28.24-AM-500x280.png 500w\" sizes=\"auto, (max-width: 2184px) 100vw, 2184px\" \/><\/a><br \/>\n\u044f \u0445\u043e\u0442\u0435\u043b \u0431\u044b \u0438\u0433\u043d\u043e\u0440\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043d\u0430\u0436\u0430\u0442\u0438\u0435 \u043a\u043d\u043e\u043f\u043a\u0438 \u0441 \u0442\u0430\u043a\u043e\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0435\u0439, \u0432\u043c\u0435\u0441\u0442\u043e \u0430\u0432\u0430\u0440\u0438\u0439\u043d\u043e\u0433\u043e \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f. \u0410 \u0447\u0442\u043e, \u0435\u0441\u043b\u0438 \u0432\u043e\u043e\u0431\u0449\u0435 \u0432\u043f\u043e\u043b\u043d\u0435 \u0437\u0430\u043a\u043e\u043d\u043d\u043e \u0438\u043c\u0435\u0442\u044c \u043a\u043d\u043e\u043f\u043a\u0443 \u0441 \u043f\u0443\u0441\u0442\u044b\u043c \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043a\u043e\u043c? \u042f \u0445\u043e\u0447\u0443 &#171;\u0440\u0430\u0437\u0432\u043e\u0440\u0430\u0447\u0438\u0432\u0430\u0442\u044c&#187; \u0442\u043e\u043b\u044c\u043a\u043e \u0442\u043e\u0433\u0434\u0430, \u043a\u043e\u0433\u0434\u0430 \u0437\u0430\u0433\u043e\u043b\u043e\u0432\u043e\u043a \u043a\u043d\u043e\u043f\u043a\u0438 &#171;<span style=\"text-decoration: underline;\">\u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d<\/span>&#171;. \u0421\u043f\u043e\u0441\u043e\u0431, \u043a\u0430\u043a\u0438\u043c \u043c\u044b \u043c\u043e\u0436\u0435\u043c \u044d\u0442\u043e \u0441\u0434\u0435\u043b\u0430\u0442\u044c &#8212; \u043d\u0435 \u0441\u0442\u0430\u0432\u0438\u0442\u044c\u00a0\u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439<strong><span style=\"color: #0000ff;\">\u00a0!\u00a0<\/span><\/strong>\u0437\u043d\u0430\u043a, \u0430 \u043f\u043e\u0441\u0442\u0430\u0432\u0438\u0442\u044c \u0432 \u043d\u0430\u0447\u0430\u043b\u0435 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u00a0\u00a0<strong><span style=\"color: #0000ff;\">if<\/span><\/strong>. \u0412 \u044d\u0442\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u0445\u043e\u0440\u043e\u0448\u043e, \u0447\u0442\u043e \u043d\u0435 \u043d\u0430\u0434\u043e \u043c\u043d\u043e\u0433\u043e \u043f\u0435\u0447\u0430\u0442\u0430\u0442\u044c \u0438 \u0432\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u0442\u0430\u043a, \u043a\u0430\u043a \u0438 \u0447\u0438\u0442\u0430\u0435\u0442\u0441\u044f. \u0415\u0441\u043b\u0438 \u044f \u043c\u043e\u0433\u0443 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u0438\u0441\u0432\u043e\u0435\u043d\u0438\u0435<br \/>\n<strong><span style=\"color: #0000ff;\">\u00a0let mathematicalSymbol =\u00a0sender .currentTitle<\/span><\/strong>, \u0442\u043e \u044f \u043c\u043e\u0433\u0443 \u0447\u0442\u043e-\u0442\u043e \u0441\u0434\u0435\u043b\u0430\u0442\u044c \u0432 \u044d\u0442\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.53.21-AM.png\" rel=\"attachment wp-att-4607\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4607 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.53.21-AM.png\" alt=\"Screen Shot 2016-04-28 at 8.53.21 AM\" width=\"1476\" height=\"244\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.53.21-AM.png 1476w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.53.21-AM-300x50.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.53.21-AM-768x127.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.53.21-AM-1024x169.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.53.21-AM-500x83.png 500w\" sizes=\"auto, (max-width: 1476px) 100vw, 1476px\" \/><\/a><\/p>\n<p>\u042d\u0442\u043e \u0445\u043e\u0440\u043e\u0448\u043e \u0447\u0438\u0442\u0430\u0435\u0442\u0441\u044f \u043f\u043e-\u0430\u043d\u0433\u043b\u0438\u0439\u0441\u043a\u0438 \u0438, \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0442\u0435\u043b\u044c\u043d\u043e, \u043f\u0440\u0435\u043a\u0440\u0430\u0441\u043d\u044b\u0439 \u0441\u043f\u043e\u0441\u043e\u0431 &#171;\u0440\u0430\u0437\u0432\u0435\u0440\u043d\u0443\u0442\u044c&#187; <strong><span style=\"color: #0000ff;\">Optional<\/span><\/strong>. \u0412\u043d\u0443\u0442\u0440\u0438 \u044d\u0442\u043e\u0433\u043e<strong><span style=\"color: #0000ff;\"> if<\/span><\/strong>, <strong><span style=\"color: #0000ff;\">mathematicalSymbol<\/span><\/strong> \u0431\u0443\u0434\u0435\u0442 \u0441\u0442\u0440\u043e\u043a\u043e\u0439 <strong><span style=\"color: #0000ff;\">String<\/span><\/strong>.<br \/>\n<a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.57.17-AM.png\" rel=\"attachment wp-att-4608\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4608 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.57.17-AM.png\" alt=\"Screen Shot 2016-04-28 at 8.57.17 AM\" width=\"1510\" height=\"238\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.57.17-AM.png 1510w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.57.17-AM-300x47.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.57.17-AM-768x121.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.57.17-AM-1024x161.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-8.57.17-AM-500x79.png 500w\" sizes=\"auto, (max-width: 1510px) 100vw, 1510px\" \/><\/a><br \/>\n\u042d\u0442\u043e \u0431\u0443\u0434\u0435\u0442 \u0430\u0441\u0441\u043e\u0446\u0438\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 <strong><span style=\"color: #0000ff;\">currentTitle<\/span><\/strong>. \u0417\u0430 \u043f\u0440\u0435\u0434\u0435\u043b\u0430\u043c\u0438 \u044d\u0442\u043e\u0433\u043e\u00a0<strong><span style=\"color: #0000ff;\">if<\/span><\/strong>,\u00a0<strong><span style=\"color: #0000ff;\">mathematicalSymbol<\/span><\/strong> \u0434\u0430\u0436\u0435 \u043d\u0435 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043e. \u0412\u0441\u0435 \u0441\u0443\u043f\u0435\u0440 \u043f\u0440\u043e\u0441\u0442\u043e.<\/p>\n<p>\u0414\u0430\u043b\u0435\u0435 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0438\u043c \u0441 <strong><span style=\"color: #0000ff;\">mathematicalSymbol<\/span><\/strong>. \u0415\u0441\u043b\u0438 <strong><span style=\"color: #0000ff;\">mathematicalSymbol = ?<\/span><\/strong>, \u0442\u043e \u044f \u043c\u043e\u0433\u0443 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u044c \u043c\u043e\u0439\u00a0<strong><span style=\"color: #0000ff;\">display<\/span><\/strong><span style=\"color: #000000;\">,<\/span> \u0438 \u044f \u0431\u043e\u043b\u044c\u0448\u0435 \u043d\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e \u0432\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439<strong><span style=\"color: #0000ff;\">\u00a0!\u00a0<\/span><\/strong>\u0437\u043d\u0430\u043a, \u0432 \u043a\u043e\u043d\u0441\u0442\u0430\u043d\u0442\u0443 <strong><span style=\"color: #0000ff;\">M_PI<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f <strong><span style=\"color: #0000ff;\">Double<\/span><\/strong> \u043f\u043e\u043b\u043e\u0436\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u043c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u043c<strong><span style=\"color: #000000;\">\u00a0?<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.08.49-AM.png\" rel=\"attachment wp-att-4609\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4609 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.08.49-AM.png\" alt=\"Screen Shot 2016-04-28 at 9.08.49 AM\" width=\"1462\" height=\"334\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.08.49-AM.png 1462w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.08.49-AM-300x69.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.08.49-AM-768x175.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.08.49-AM-1024x234.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.08.49-AM-500x114.png 500w\" sizes=\"auto, (max-width: 1462px) 100vw, 1462px\" \/><\/a><br \/>\n\u0422\u0435\u043f\u0435\u0440\u044c \u0443 \u043d\u0430\u0441 \u043f\u043e\u044f\u0432\u0438\u043b\u0430\u0441\u044c \u043e\u0448\u0438\u0431\u043a\u0430. \u041f\u043e\u0447\u0435\u043c\u0443 \u044d\u0442\u043e \u043e\u0448\u0438\u0431\u043a\u0430 \u043f\u043e\u044f\u0432\u0438\u043b\u0430\u0441\u044c?<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.12.08-AM.png\" rel=\"attachment wp-att-4610\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4610 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.12.08-AM.png\" alt=\"Screen Shot 2016-04-28 at 9.12.08 AM\" width=\"1460\" height=\"340\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.12.08-AM.png 1460w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.12.08-AM-300x70.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.12.08-AM-768x179.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.12.08-AM-1024x238.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.12.08-AM-500x116.png 500w\" sizes=\"auto, (max-width: 1460px) 100vw, 1460px\" \/><\/a><\/p>\n<p>\u041f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u043d\u0430\u043c \u0433\u043e\u0432\u043e\u0440\u044f\u0442, \u0447\u0442\u043e \u043d\u0435\u043b\u044c\u0437\u044f \u043f\u0440\u0438\u0441\u0432\u043e\u0438\u0442\u044c \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0442\u0438\u043f <strong><span style=\"color: #0000ff;\">Double<\/span><\/strong> \u0447\u0435\u043c\u0443-\u0442\u043e, \u0447\u0442\u043e \u0438\u043c\u0435\u0435\u0442 \u0442\u0438\u043f <strong><span style=\"color: #0000ff;\">String?<\/span><\/strong>. \u041c\u044b \u0437\u043d\u0430\u0435\u043c, \u0447\u0442\u043e\u00a0<strong><span style=\"color: #0000ff;\">display.text<\/span><\/strong> \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0441\u0442\u0440\u043e\u043a\u043e\u0439 \u00a0\u0438 \u0438\u043c\u0435\u0435\u0442 \u0442\u0438\u043f <strong><span style=\"color: #0000ff;\">String?<\/span><\/strong>, \u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u043e, \u043c\u044b \u043d\u0435 \u0434\u043e\u043b\u0436\u043d\u044b \u0434\u0435\u043b\u0430\u0442\u044c \u0442\u0430\u043a\u043e\u0435 \u043f\u0440\u0438\u0441\u0432\u0430\u0438\u0432\u0430\u043d\u0438\u0435. \u041a\u0430\u043a \u043c\u044b \u043c\u043e\u0436\u0435\u043c \u043f\u0440\u0435\u043e\u0431\u0440\u0430\u0437\u043e\u0432\u0430\u0442\u044c <strong><span style=\"color: #0000ff;\">Double\u00a0<\/span><\/strong>\u0432 <strong><span style=\"color: #0000ff;\">String<\/span><\/strong>? \u041e\u0442\u0432\u0435\u0442 \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u043c\u044b \u0434\u043e\u043b\u0436\u043d\u044b \u0441\u043e\u0437\u0434\u0430\u0442\u044c \u043d\u043e\u0432\u0443\u044e \u0441\u0442\u0440\u043e\u043a\u0443. \u0421\u0435\u0439\u0447\u0430\u0441 \u0432\u044b \u0443\u0432\u0438\u0434\u0438\u0442\u0435, \u043a\u0430\u043a \u0441\u043e\u0437\u0434\u0430\u0435\u0442\u0441\u044f \u043d\u043e\u0432\u044b\u0439 \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440 \u043e\u0431\u044a\u0435\u043a\u0442\u0430 \u0432\u00a0<strong>Swift<\/strong>.<\/p>\n<p><span style=\"color: #3366ff;\">&#8212;&#8212;&#8212;&#8212;&#8212;&#8212;75-\u0430\u044f \u043c\u0438\u043d\u0443\u0442\u0430 \u041b\u0435\u043a\u0446\u0438\u0438 &#8212;&#8212;&#8212;&#8212;&#8212;&#8212;<\/span><\/p>\n<p>\u0414\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u0432\u044b \u043f\u0440\u043e\u0441\u0442\u043e \u043f\u0438\u0448\u0438\u0442\u0435 \u0438\u043c\u044f \u043a\u043b\u0430\u0441\u0441\u0430, \u0430 \u0437\u0430\u0442\u0435\u043c \u043a\u0440\u0443\u0433\u043b\u044b\u0435 \u0441\u043a\u043e\u0431\u043a\u0438, \u0432\u043d\u0443\u0442\u0440\u0438 \u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0432\u044b \u0440\u0430\u0437\u043c\u0435\u0449\u0430\u0435\u0442\u0435 \u0432\u0441\u0435, \u0447\u0442\u043e \u044d\u0442\u043e\u0442 \u043a\u043b\u0430\u0441\u0441 \u0434\u043e\u043f\u0443\u0441\u043a\u0430\u0435\u0442 \u043f\u0440\u0438 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u0438 \u043d\u043e\u0432\u043e\u0433\u043e \u044d\u043a\u0437\u0435\u043c\u043f\u043b\u044f\u0440\u0430. \u0418 \u0443 \u0432\u0430\u0441 \u0435\u0441\u0442\u044c \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u043e \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0435\u0439. \u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u044d\u0442\u043e \u043c\u043e\u0433\u0443\u0442 \u0431\u044b\u0442\u044c \u0438\u043d\u0438\u0446\u0438\u0430\u043b\u0438\u0437\u0430\u0442\u043e\u0440\u044b, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043c\u044b \u0441\u0441\u044b\u043b\u0430\u043b\u0438\u0441\u044c \u0440\u0430\u043d\u044c\u0448\u0435. \u041a \u0441\u0447\u0430\u0441\u0442\u044c\u044e, <strong><span style=\"color: #0000ff;\">String<\/span><\/strong> \u0432 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0438 \u0432\u0437\u044f\u0442\u044c <strong><span style=\"color: #0000ff;\">Double<\/span><\/strong> \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u043e\u0434\u043d\u043e\u0439 \u0438\u0437 \u0442\u0430\u043a\u0438\u0445 \u0432\u0435\u0449\u0435\u0439, \u0442\u0430\u043a \u043a\u0430\u043a \u043e\u043d\u0430 \u0437\u043d\u0430\u0435\u0442, \u043a\u0430\u043a \u0441\u043e\u0437\u0434\u0430\u0442\u044c \u043d\u043e\u0432\u0443\u044e \u0441\u0442\u0440\u043e\u043a\u0443 <strong><span style=\"color: #0000ff;\">String\u00a0<\/span><\/strong>\u0438\u0437 <strong><span style=\"color: #0000ff;\">Double<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.18.24-AM.png\" rel=\"attachment wp-att-4611\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4611 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.18.24-AM.png\" alt=\"Screen Shot 2016-04-28 at 9.18.24 AM\" width=\"1466\" height=\"332\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.18.24-AM.png 1466w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.18.24-AM-300x68.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.18.24-AM-768x174.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.18.24-AM-1024x232.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.18.24-AM-500x113.png 500w\" sizes=\"auto, (max-width: 1466px) 100vw, 1466px\" \/><\/a><\/p>\n<p>\u0417\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u043c \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435, \u0443\u0431\u0435\u0436\u0434\u0430\u0435\u043c\u0441\u044f, \u0447\u0442\u043e \u0446\u0438\u0444\u0440\u043e\u0432\u0430\u044f \u043a\u043b\u0430\u0432\u0438\u0430\u0442\u0443\u0440\u0430 \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0438 \u043d\u0430\u0436\u0438\u043c\u0430\u0435\u043c \u043a\u043d\u043e\u043f\u043a\u0443\u00a0<strong><span style=\"color: #000000;\">?<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.32.04-AM.png\" rel=\"attachment wp-att-4612\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4612 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.32.04-AM.png\" alt=\"Screen Shot 2016-04-28 at 9.32.04 AM\" width=\"1356\" height=\"1374\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.32.04-AM.png 1356w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.32.04-AM-296x300.png 296w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.32.04-AM-768x778.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.32.04-AM-1011x1024.png 1011w\" sizes=\"auto, (max-width: 1356px) 100vw, 1356px\" \/><\/a><br \/>\n\u0423 \u043d\u0430\u0441 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430, \u0442\u0430\u043a \u043a\u0430\u043a \u043d\u0435 \u0432\u0441\u0435 \u0446\u0438\u0444\u0440\u044b \u043f\u043e\u043c\u0435\u0449\u0430\u044e\u0442\u0441\u044f \u043d\u0430 \u043d\u0430\u0448\u0435\u043c \u0434\u0438\u0441\u043f\u043b\u0435\u0435. \u041c\u044b \u043c\u043e\u0436\u0435\u043c \u043e\u0447\u0435\u043d\u044c \u0431\u044b\u0441\u0442\u0440\u043e \u044d\u0442\u043e \u0438\u0441\u043f\u0440\u0430\u0432\u0438\u0442\u044c. \u0412\u0435\u0440\u043d\u0435\u043c\u0441\u044f \u043e\u0431\u0440\u0430\u0442\u043d\u043e. \u0412 \u0418\u043d\u0441\u043f\u0435\u043a\u0442\u043e\u0440\u0435 \u0410\u0442\u0440\u0438\u0431\u0443\u0442\u043e\u0432 \u0434\u043b\u044f \u043d\u0430\u0448\u0435\u0433\u043e \u0434\u0438\u0441\u043f\u043b\u0435\u044f <strong><span style=\"color: #0000ff;\">display<\/span><\/strong> \u0435\u0441\u0442\u044c \u0437\u0430\u043c\u0435\u0447\u0430\u0442\u0435\u043b\u044c\u043d\u0430\u044f &#171;\u0444\u0438\u0448\u043a\u0430&#187; \u0441 \u0438\u043c\u0435\u043d\u0435\u043c <strong>Autoshrink<\/strong>, \u0431\u043b\u0430\u0433\u043e\u0434\u0430\u0440\u044f \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043c\u0435\u0442\u043a\u0430 <strong><span style=\"color: #0000ff;\">display\u00a0<\/span><\/strong>\u0431\u0443\u0434\u0435\u0442 \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438 &#171;\u0441\u0436\u0438\u043c\u0430\u0442\u044c\u0441\u044f&#187;, \u043d\u043e \u043d\u0435 \u043c\u0435\u043d\u0435\u0435, \u0447\u0435\u043c \u0434\u043e\u00a09 point.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.41.24-AM.png\" rel=\"attachment wp-att-4613\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4613 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.41.24-AM.png\" alt=\"Screen Shot 2016-04-28 at 9.41.24 AM\" width=\"2508\" height=\"1076\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.41.24-AM.png 2508w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.41.24-AM-300x129.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.41.24-AM-768x329.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.41.24-AM-1024x439.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.41.24-AM-500x215.png 500w\" sizes=\"auto, (max-width: 2508px) 100vw, 2508px\" \/><\/a><br \/>\n\u042d\u0442\u043e \u0440\u0435\u0448\u0438\u0442 \u043d\u0430\u0448\u0443 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.46.57-AM.png\" rel=\"attachment wp-att-4614\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4614 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.46.57-AM.png\" alt=\"Screen Shot 2016-04-28 at 9.46.57 AM\" width=\"2460\" height=\"926\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.46.57-AM.png 2460w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.46.57-AM-300x113.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.46.57-AM-768x289.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.46.57-AM-1024x385.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.46.57-AM-500x188.png 500w\" sizes=\"auto, (max-width: 2460px) 100vw, 2460px\" \/><\/a><br \/>\n\u041d\u043e \u0443 \u043d\u0430\u0441 \u0435\u0441\u0442\u044c \u0435\u0449\u0435 \u043e\u0434\u043d\u0430 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430. \u041e\u043f\u044f\u0442\u044c \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u043c \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u0438 \u043d\u0430\u0436\u0438\u043c\u0430\u0435\u043c \u00a0\u043a\u043d\u043e\u043f\u043a\u0443\u00a0<strong><span style=\"color: #000000;\">?<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.50.41-AM.png\" rel=\"attachment wp-att-4615\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4615 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.50.41-AM.png\" alt=\"Screen Shot 2016-04-28 at 9.50.41 AM\" width=\"756\" height=\"434\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.50.41-AM.png 756w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.50.41-AM-300x172.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.50.41-AM-500x287.png 500w\" sizes=\"auto, (max-width: 756px) 100vw, 756px\" \/><\/a><br \/>\n\u0427\u0442\u043e \u044d\u0442\u043e \u0442\u0430\u043a\u043e\u0435? \u0412 \u043a\u043e\u043d\u0446\u0435 \u0447\u0438\u0441\u043b\u0430 \u043c\u044b \u0432\u0438\u0434\u0438\u043c \u0441\u0438\u043c\u0432\u043e\u043b \u00a0<strong><span style=\"color: #000000;\">?<\/span><\/strong>. \u00a0\u041f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u043c \u043d\u0430\u0436\u0438\u043c\u0430\u0442\u044c \u0446\u0438\u0444\u0440\u044b: &#171;9&#187;, &#171;6&#187; \u0438 \u0442.\u0434..<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.53.42-AM.png\" rel=\"attachment wp-att-4616\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4616 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.53.42-AM.png\" alt=\"Screen Shot 2016-04-28 at 9.53.42 AM\" width=\"758\" height=\"428\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.53.42-AM.png 758w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.53.42-AM-300x169.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.53.42-AM-500x282.png 500w\" sizes=\"auto, (max-width: 758px) 100vw, 758px\" \/><\/a><\/p>\n<p>\u042d\u0442\u043e \u043a\u0430\u043a\u043e\u0439-\u0442\u043e \u0431\u0435\u0441\u043f\u043e\u0440\u044f\u0434\u043e\u043a. \u041d\u0430 \u0441\u0430\u043c\u043e\u043c \u0434\u0435\u043b\u0435 \u0443 \u043d\u0430\u0441 \u0434\u0432\u0435 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u044b \u0437\u0434\u0435\u0441\u044c.<\/p>\n<p>\u041f\u043e \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u043f\u0440\u0438\u0447\u0438\u043d\u0435, \u043a\u043e\u0433\u0434\u0430 \u043c\u044b \u043d\u0430\u0436\u0438\u043c\u0430\u0435\u043c \u043a\u043d\u043e\u043f\u043a\u0443\u00a0<strong><span style=\"color: #000000;\">?<\/span><\/strong>, \u0442\u043e \u0432 \u043a\u043e\u043d\u0446\u0435 <strong><span style=\"color: #0000ff;\">display <\/span><\/strong><span style=\"color: #0000ff;\"><span style=\"color: #000000;\">\u043f\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0441\u0438\u043c\u0432\u043e\u043b <strong>?\u00a0<\/strong>\u0432\u00a0<\/span><\/span><span style=\"color: #000000;\">\u043a\u043e\u043d\u0446\u0435<\/span>. \u041f\u043e\u0447\u0435\u043c\u0443? \u042d\u0442\u043e \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u043f\u043e \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0439 \u043f\u0440\u0438\u0447\u0438\u043d\u0435. \u0421\u043c\u043e\u0442\u0440\u0438\u043c \u043d\u0430 \u043c\u0430\u043b\u0435\u043d\u044c\u043a\u0438\u0439 \u043a\u0440\u0443\u0436\u043e\u0447\u0435\u043a \u0441\u043b\u0435\u0432\u0430<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.58.40-AM.png\" rel=\"attachment wp-att-4617\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4617 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.58.40-AM.png\" alt=\"Screen Shot 2016-04-28 at 9.58.40 AM\" width=\"1970\" height=\"1160\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.58.40-AM.png 1970w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.58.40-AM-300x177.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.58.40-AM-768x452.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.58.40-AM-1024x603.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-9.58.40-AM-500x294.png 500w\" sizes=\"auto, (max-width: 1970px) 100vw, 1970px\" \/><\/a><br \/>\n\u041a\u043d\u043e\u043f\u043a\u0430\u00a0<strong><span style=\"color: #000000;\">?<\/span><\/strong><span style=\"color: #000000;\"> \u043f\u043e\u0441\u044b\u043b\u0430\u0435\u0442 <strong>Action <span style=\"color: #0000ff;\">performOperation<\/span><\/strong>. \u0410 \u043a\u0430\u043a \u043d\u0430\u0441\u0447\u0435\u0442\u00a0<strong>Action\u00a0<span style=\"color: #0000ff;\">touchDigit<\/span><\/strong>\u00a0?<\/span><\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.01.27-AM.png\" rel=\"attachment wp-att-4618\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4618 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.01.27-AM.png\" alt=\"Screen Shot 2016-04-28 at 10.01.27 AM\" width=\"1966\" height=\"1146\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.01.27-AM.png 1966w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.01.27-AM-300x175.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.01.27-AM-768x448.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.01.27-AM-1024x597.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.01.27-AM-500x291.png 500w\" sizes=\"auto, (max-width: 1966px) 100vw, 1966px\" \/><\/a><br \/>\n\u041a\u043d\u043e\u043f\u043a\u0430\u00a0<strong><span style=\"color: #000000;\">?<\/span><\/strong><span style=\"color: #000000;\">\u00a0\u0442\u0430\u043a\u0436\u0435 \u043f\u043e\u0441\u044b\u043b\u0430\u0435\u0442 \u0438\u00a0<strong>Action\u00a0<\/strong><strong>\u00a0<span style=\"color: #0000ff;\">touchDigit<\/span><\/strong><\/span>. \u0412\u044b \u0432\u0438\u0434\u0438\u0442\u0435, \u0447\u0442\u043e \u043a\u043d\u043e\u043f\u043a\u0430\u00a0<strong><span style=\"color: #000000;\">?\u00a0<\/span><\/strong>\u0437\u0430\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u043e\u0431\u0430 \u043c\u0435\u0442\u043e\u0434\u0430: \u0438 <strong><span style=\"color: #0000ff;\">touchDigit<\/span><\/strong>, \u0438 <strong><span style=\"color: #0000ff;\">performOperation<\/span><\/strong>. \u042d\u0442\u043e \u043f\u0440\u043e\u0438\u0437\u043e\u0448\u043b\u043e \u043f\u043e\u0442\u043e\u043c\u0443, \u0447\u0442\u043e \u044f \u0441\u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043b \u0438 \u0432\u0441\u0442\u0430\u0432\u0438\u043b \u043a\u043d\u043e\u043f\u043a\u0443 &#171;7&#187;, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u043e\u0441\u044b\u043b\u0430\u0435\u0442 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435\u00a0<strong><span style=\"color: #0000ff;\">touchDigit<\/span><\/strong> \u0438 \u0437\u0430\u0442\u0435\u043c \u0434\u043e\u0431\u0430\u0432\u0438\u043b \u0435\u0449\u0435 \u043e\u0434\u043d\u043e &#8212; <strong><span style=\"color: #0000ff;\">performOperation<\/span><\/strong>. \u041a\u0430\u043a \u043d\u0430\u043c \u0438\u0441\u043f\u0440\u0430\u0432\u0438\u0442\u044c \u044d\u0442\u043e? \u0414\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u043d\u0443\u0436\u043d\u043e \u043d\u0430 \u043a\u043d\u043e\u043f\u043a\u0435\u00a0<strong><span style=\"color: #000000;\">?<\/span><\/strong><span style=\"color: #000000;\"> \u043a\u043b\u0438\u043a\u043d\u0443\u0442\u044c<\/span>\u00a0\u043f\u0440\u0430\u0432\u0443\u044e \u043a\u043d\u043e\u043f\u043a\u0443 \u043c\u044b\u0448\u0438 (\u0438\u043b\u0438 \u0443\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044f <strong>CTRL<\/strong>, \u043f\u0440\u043e\u0441\u0442\u043e \u043a\u043b\u0438\u043a\u043d\u0443\u0442\u044c \u043d\u0430 \u043c\u044b\u0448\u043a\u0435)<span style=\"color: #000000;\">. \u0415\u0441\u043b\u0438 \u0432\u044b \u043a\u043b\u0438\u043a\u043d\u0438\u0442\u0435 \u043f\u0440\u0430\u0432\u0443\u044e \u043a\u043d\u043e\u043f\u043a\u0443 \u043c\u044b\u0448\u0438 \u043d\u0430 \u0447\u0435\u043c-\u043d\u0438\u0431\u0443\u0434\u044c \u0438\u0437 \u0432\u0430\u0448\u0435\u0433\u043e<\/span>\u00a0UI, \u0442\u043e \u0432\u044b \u0443\u0432\u0438\u0434\u0438\u0442\u0435 \u0432\u0441\u0435 \u0441\u0432\u044f\u0437\u0438 \u044d\u0442\u043e\u0433\u043e \u044d\u043b\u0435\u043c\u0435\u043d\u0442\u0430 UI.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.12.57-AM.png\" rel=\"attachment wp-att-4619\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4619 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.12.57-AM.png\" alt=\"Screen Shot 2016-04-28 at 10.12.57 AM\" width=\"1940\" height=\"1248\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.12.57-AM.png 1940w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.12.57-AM-300x193.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.12.57-AM-768x494.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.12.57-AM-1024x659.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.12.57-AM-466x300.png 466w\" sizes=\"auto, (max-width: 1940px) 100vw, 1940px\" \/><\/a><\/p>\n<p>\u041e\u0447\u0435\u043d\u044c \u0432\u0430\u0436\u043d\u043e \u043f\u043e\u043d\u0438\u043c\u0430\u0442\u044c, \u0447\u0442\u043e \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442, \u0435\u0441\u043b\u0438 \u0432\u044b \u043a\u043b\u0438\u043a\u043d\u0438\u0442\u0435 \u043f\u0440\u0430\u0432\u0443\u044e \u043a\u043d\u043e\u043f\u043a\u0443 \u043c\u044b\u0448\u0438 \u043d\u0430 \u0432\u0430\u0448\u0435\u043c \u00a0UI. \u0412 \u0441\u043b\u0443\u0447\u0430\u0435 \u0441 \u043d\u0430\u0448\u0435\u0439\u00a0\u00a0\u043a\u043d\u043e\u043f\u043a\u043e\u0439\u00a0<strong><span style=\"color: #000000;\">?<\/span><\/strong><span style=\"color: #000000;\">, \u043c\u044b \u0432\u0438\u0434\u0438\u043c \u0434\u0432\u0435 \u0441\u0432\u044f\u0437\u0438: c\u00a0<\/span><strong><span style=\"color: #0000ff;\">touchDigit:<\/span><\/strong> \u0438 \u0441\u00a0<strong><span style=\"color: #0000ff;\">performOperation:<\/span><\/strong> , \u0442\u0430\u043a \u0447\u0442\u043e \u044f \u0431\u0443\u0434\u0443 \u0438\u0437\u0431\u0430\u0432\u043b\u044f\u0442\u044c\u0441\u044f \u043e\u0442 \u0441\u0432\u044f\u0437\u0438 <strong><span style=\"color: #0000ff;\">touchDigit:<\/span><\/strong> . \u0414\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u043d\u0430\u0436\u0430\u0442\u044c \u043d\u0430 \u043c\u0430\u043b\u0435\u043d\u044c\u043a\u0438\u0439 \u043a\u0440\u0435\u0441\u0442\u0438\u043a \u0441\u043b\u0435\u0432\u0430 \u0432\u0432\u0435\u0440\u0445\u0443 <strong><span style=\"color: #0000ff;\">touchDigit:<\/span><\/strong>\u00a0.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.19.39-AM.png\" rel=\"attachment wp-att-4620\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4620 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.19.39-AM.png\" alt=\"Screen Shot 2016-04-28 at 10.19.39 AM\" width=\"1426\" height=\"130\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.19.39-AM.png 1426w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.19.39-AM-300x27.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.19.39-AM-768x70.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.19.39-AM-1024x93.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.19.39-AM-500x46.png 500w\" sizes=\"auto, (max-width: 1426px) 100vw, 1426px\" \/><\/a><\/p>\n<p>\u0422\u0435\u043f\u0435\u0440\u044c \u0441\u0432\u044f\u0437\u044c <strong><span style=\"color: #0000ff;\">touchDigit:<\/span><\/strong>\u00a0\u0443\u0448\u043b\u0430 \u0438 \u043e\u0441\u0442\u0430\u043b\u0430\u0441\u044c \u0442\u043e\u043b\u044c\u043a\u043e <strong><span style=\"color: #0000ff;\">performOperation:<\/span><\/strong>\u00a0.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.20.50-AM.png\" rel=\"attachment wp-att-4621\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4621 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.20.50-AM.png\" alt=\"Screen Shot 2016-04-28 at 10.20.50 AM\" width=\"1442\" height=\"100\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.20.50-AM.png 1442w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.20.50-AM-300x21.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.20.50-AM-768x53.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.20.50-AM-1024x71.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.20.50-AM-500x35.png 500w\" sizes=\"auto, (max-width: 1442px) 100vw, 1442px\" \/><\/a><\/p>\n<p>\u042d\u0442\u0443 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0443\u044e \u0441 \u0440\u0430\u0437\u043c\u0435\u0449\u0435\u043d\u0438\u0435 \u0441\u0438\u043c\u0432\u043e\u043b\u0430 <strong><span style=\"color: #000000;\">?<\/span><\/strong><span style=\"color: #000000;\">,<\/span>\u00a0\u043c\u044b \u0440\u0435\u0448\u0438\u043b\u0438. \u041d\u043e \u0434\u0440\u0443\u0433\u0430\u044f \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0430 \u043f\u043e\u043a\u0430 \u043e\u0441\u0442\u0430\u043b\u0430\u0441\u044c. \u041e\u043d\u0430 \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u0435\u0441\u043b\u0438 \u044f \u043d\u0430\u0436\u0430\u043b \u043a\u043d\u043e\u043f\u043a\u0443\u00a0<strong><span style=\"color: #000000;\">?<\/span><\/strong><span style=\"color: #000000;\">,<\/span>\u00a0 \u0430 \u0437\u0430\u0442\u0435\u043c \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u044e \u043f\u0435\u0447\u0430\u0442\u0430\u0442\u044c \u0446\u0438\u0444\u0440\u044b, \u0442\u043e \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u0434\u0443\u043c\u0430\u0435\u0442, \u0447\u0442\u043e \u044f \u043d\u0430\u0445\u043e\u0436\u0443\u0441\u044c \u0432 \u0441\u0435\u0440\u0435\u0434\u0438\u043d\u0435 \u043d\u0430\u0431\u043e\u0440\u0430 \u0447\u0438\u0441\u043b\u0430, \u0438 \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u0442 \u043f\u0435\u0447\u0430\u0442\u0430\u0435\u043c\u044b\u0435 \u0446\u0438\u0444\u0440\u044b \u0432 \u043a\u043e\u043d\u0435\u0446 \u0434\u0438\u0441\u043f\u043b\u0435\u044f\u00a0. \u042d\u0442\u0443 \u043f\u0440\u043e\u0431\u043b\u0435\u043c\u0443 \u0438\u0441\u043f\u0440\u0430\u0432\u0438\u0442\u044c \u043e\u0447\u0435\u043d\u044c \u043b\u0435\u0433\u043a\u043e: \u044f \u043f\u0440\u043e\u0441\u0442\u043e \u043d\u0430\u043f\u0438\u0448\u0443<\/p>\n<p><strong><span style=\"color: #0000ff;\">userIsInTheMiddleofTypingNumber = false<\/span><\/strong><\/p>\n<p>\u0432 \u043c\u0435\u0442\u043e\u0434\u0435 <strong><span style=\"color: #0000ff;\">performOperation<\/span><\/strong>, \u044d\u0442\u043e \u0441\u043e\u0442\u0440\u0435\u0442 \u0432\u0441\u0435, \u0447\u0442\u043e \u0431\u044b\u043b\u043e \u043d\u0430 \u0434\u0438\u0441\u043f\u043b\u0435\u0435 <strong><span style=\"color: #0000ff;\">display<\/span><\/strong> \u0434\u043e \u044d\u0442\u043e\u0433\u043e \u0438, \u043e\u0447\u0435\u0432\u0438\u0434\u043d\u043e, \u0442\u0435\u043f\u0435\u0440\u044c \u044f \u043d\u0435 \u0431\u0443\u0434\u0443 \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u044c\u0441\u044f \u0432 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0438, \u043a\u043e\u0433\u0434\u0430 \u044f \u043f\u0435\u0447\u0430\u0442\u0430\u044e \u0447\u0438\u0441\u043b\u043e.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.22.49-AM.png\" rel=\"attachment wp-att-4622\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4622 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.22.49-AM.png\" alt=\"Screen Shot 2016-04-28 at 10.22.49 AM\" width=\"2148\" height=\"906\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.22.49-AM.png 2148w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.22.49-AM-300x127.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.22.49-AM-768x324.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.22.49-AM-1024x432.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.22.49-AM-500x211.png 500w\" sizes=\"auto, (max-width: 2148px) 100vw, 2148px\" \/><\/a><br \/>\n\u0422\u0435\u043f\u0435\u0440\u044c \u0443 \u043d\u0430\u0441 \u0435\u0441\u0442\u044c \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u044e\u0449\u0438\u0439 \u043a\u0430\u043b\u044c\u043a\u0443\u043b\u044f\u0442\u043e\u0440 \u0441 \u043e\u0434\u043d\u043e\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0435\u0439. \u0417\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u043c \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435. \u041d\u0430\u0431\u0438\u0440\u0430\u0435\u043c &#171;<strong>4<\/strong>&#187; &#171;<strong>5<\/strong>&#187; &#171;<strong><span style=\"color: #000000;\">?<\/span><\/strong><span style=\"color: #000000;\">&#171;<\/span><\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.32.43-AM.png\" rel=\"attachment wp-att-4623\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-4623 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.32.43-AM.png\" alt=\"Screen Shot 2016-04-28 at 10.32.43 AM\" width=\"1356\" height=\"1144\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.32.43-AM.png 1356w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.32.43-AM-300x253.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.32.43-AM-768x648.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.32.43-AM-1024x864.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2016\/04\/Screen-Shot-2016-04-28-at-10.32.43-AM-356x300.png 356w\" sizes=\"auto, (max-width: 1356px) 100vw, 1356px\" \/><\/a><\/p>\n<p>\u0412 \u0421\u0440\u0435\u0434\u0443 \u043c\u044b \u0441\u0434\u0435\u043b\u0430\u0435\u043c \u0431\u043e\u043b\u0435\u0435 \u043c\u043e\u0449\u043d\u044b\u0439 \u043a\u0430\u043b\u044c\u043a\u0443\u043b\u044f\u0442\u043e\u0440.<\/p>\n<p><span style=\"color: #3366ff;\">&#8212; \u041a\u043e\u043d\u0435\u0446 \u041b\u0435\u043a\u0446\u0438\u0438 1 &#8212;&#8212;<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u041b\u0435\u043a\u0446\u0438\u044f 1 CS196P \u0412\u0435\u0441\u043d\u0430 2016\u00a0\u0438 \u0441\u043b\u0430\u0439\u0434\u044b \u043d\u0430 \u0430\u043d\u0433\u043b\u0438\u0439\u0441\u043a\u043e\u043c \u044f\u0437\u044b\u043a\u0435 \u043d\u0430\u0445\u043e\u0434\u044f\u0442\u0441\u044f \u043d\u0430\u00a0\u00a0iTunes \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u201c1. Course Overview and introduction to iOS, Xcode, and Swift.\u201d \u041d\u0438\u0436\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u043d\u0435\u0430\u0432\u0442\u043e\u0440\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0440\u0443\u0441\u0441\u043a\u043e\u044f\u0437\u044b\u0447\u043d\u044b\u0439 \u043a\u043e\u043d\u0441\u043f\u0435\u043a\u0442 \u041b\u0435\u043a\u0446\u0438\u0438 1, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0441\u043e\u0441\u0442\u043e\u0438\u0442 \u0438\u0437 \u0434\u0432\u0443\u0445 \u0447\u0430\u0441\u0442\u0435\u0439: \u041f\u0435\u0440\u0432\u0430\u044f \u0447\u0430\u0441\u0442\u044c \u041b\u0435\u043a\u0446\u0438\u0438 1 CS193P \u0412\u0435\u0441\u043d\u0430 &hellip; <a href=\"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-1-cs193p-spring-2016-obzor-kursa-i-vvedenie-v-ios-xcode-i-swift-chast-2\/\">\u0427\u0438\u0442\u0430\u0442\u044c \u0434\u0430\u043b\u0435\u0435 <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[28,34,14],"tags":[29,31,35],"class_list":["post-4520","post","type-post","status-publish","format-standard","hentry","category-ios-9","category-stanford-cs-193p-ios-9","category-swift","tag-ios-9","tag-swift","tag-lektsiya-ios-9"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0431\u043e\u043b\u044c\u0448\u043e\u0439 \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u0440, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0432 \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u0438 \u043f\u0435\u0440\u0432\u043e\u0433\u043e \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u043d\u0430 Swift - \u041a\u0430\u043b\u044c\u043a\u0443\u043b\u044f\u0442\u043e\u0440\u0430.\" \/>\n\t<meta name=\"robots\" content=\"max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n\t<meta name=\"author\" content=\"tatiana.kornilova@gmail.com\"\/>\n\t<meta name=\"keywords\" content=\"ios 9,stanford cs 193p,swift,\u0441\u0442\u044d\u043d\u0444\u043e\u0440\u0434\u0441\u043a\u0438\u0435 \u043a\u0443\u0440\u0441\u044b cs 193p b\u0435\u0441\u043d\u0430 2016\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-1-cs193p-spring-2016-obzor-kursa-i-vvedenie-v-ios-xcode-i-swift-chast-2\/\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 4.9.8\" \/>\n\t\t<meta property=\"og:locale\" content=\"ru_RU\" \/>\n\t\t<meta property=\"og:site_name\" content=\"\u041e\u0431\u0443\u0447\u0430\u044e\u0449\u0438\u0439 \u043a\u0443\u0440\u0441 \u043f\u043e \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 iOS+Swift \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439. | \u0420\u0443\u0441\u0441\u043a\u0438\u0439 \u043d\u0435\u0430\u0432\u0442\u043e\u0440\u0438\u0437\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043a\u043e\u043d\u0441\u043f\u0435\u043a\u0442 \u043b\u0435\u043a\u0446\u0438\u0439 \u0421\u0442\u044d\u043d\u0444\u043e\u0440\u0434\u0441\u043a\u043e\u0433\u043e \u0443\u043d\u0438\u0432\u0435\u0440\u0441\u0438\u0442\u0435\u0442\u0430 &quot; \u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 iOS \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439&quot; 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 , 2023,  2024,  2025  \u0438 2026 \u0433\u0433., \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u0435\u043c\u044b\u0439 \u0440\u0435\u0448\u0435\u043d\u0438\u044f\u043c\u0438 \u0437\u0430\u0434\u0430\u043d\u0438\u0439 \u0438 \u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f\u043c\u0438, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u044b\u043c\u0438 \u0441 \u0430\u0434\u0430\u043f\u0442\u0430\u0446\u0438\u0435\u0439 \u043a\u0443\u0440\u0441\u043e\u0432 \u043a \u043d\u043e\u0432\u044b\u043c \u0432\u0435\u0440\u0441\u0438\u044f\u043c Swift, Objective-C \u0438 iOS.\" \/>\n\t\t<meta property=\"og:type\" content=\"article\" \/>\n\t\t<meta property=\"og:title\" content=\"\u041b\u0435\u043a\u0446\u0438\u044f 1 CS193P Spring 2016 \u2014 \u041e\u0431\u0437\u043e\u0440 \u043a\u0443\u0440\u0441\u0430 \u0438 \u0432\u0432\u0435\u0434\u0435\u043d\u0438\u0435 \u0432 iOS, Xcode \u0438 Swift. (\u0447\u0430\u0441\u0442\u044c 2) | \u041e\u0431\u0443\u0447\u0430\u044e\u0449\u0438\u0439 \u043a\u0443\u0440\u0441 \u043f\u043e \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 iOS+Swift \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439.\" \/>\n\t\t<meta property=\"og:description\" content=\"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0431\u043e\u043b\u044c\u0448\u043e\u0439 \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u0440, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0432 \u043f\u043e\u0441\u0442\u0440\u043e\u0435\u043d\u0438\u0438 \u043f\u0435\u0440\u0432\u043e\u0433\u043e \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u043d\u0430 Swift - \u041a\u0430\u043b\u044c\u043a\u0443\u043b\u044f\u0442\u043e\u0440\u0430.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-1-cs193p-spring-2016-obzor-kursa-i-vvedenie-v-ios-xcode-i-swift-chast-2\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2016-04-26T19:34:41+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2017-09-27T04:32:26+00:00\" \/>\n\t\t<meta name=\"twitter:card\" content=\"summary\" \/>\n\t\t<meta name=\"twitter:title\" content=\"\u041b\u0435\u043a\u0446\u0438\u044f 1 CS193P Spring 2016 \u2014 \u041e\u0431\u0437\u043e\u0440 \u043a\u0443\u0440\u0441\u0430 \u0438 \u0432\u0432\u0435\u0434\u0435\u043d\u0438\u0435 \u0432 iOS, Xcode \u0438 Swift. 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