{"id":13295,"date":"2020-09-20T11:33:29","date_gmt":"2020-09-20T11:33:29","guid":{"rendered":"https:\/\/bestkora.com\/IosDeveloper\/?p=13295"},"modified":"2020-09-20T14:44:50","modified_gmt":"2020-09-20T14:44:50","slug":"lektsiya-9-cs193p-spring-2020-potok-dannyh-data-flow","status":"publish","type":"post","link":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-9-cs193p-spring-2020-potok-dannyh-data-flow\/","title":{"rendered":"\u041b\u0435\u043a\u0446\u0438\u044f 9 CS193P Spring 2020 \u2014 \u041f\u043e\u0442\u043e\u043a \u0434\u0430\u043d\u043d\u044b\u0445 (Data Flow)."},"content":{"rendered":"<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2020\/09\/Screenshot-2020-09-20-at-16.47.23.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-13303 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2020\/09\/Screenshot-2020-09-20-at-16.47.23.png\" alt=\"\" width=\"2126\" height=\"1092\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2020\/09\/Screenshot-2020-09-20-at-16.47.23.png 2126w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2020\/09\/Screenshot-2020-09-20-at-16.47.23-300x154.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2020\/09\/Screenshot-2020-09-20-at-16.47.23-768x394.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2020\/09\/Screenshot-2020-09-20-at-16.47.23-1024x526.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2020\/09\/Screenshot-2020-09-20-at-16.47.23-500x257.png 500w\" sizes=\"auto, (max-width: 2126px) 100vw, 2126px\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400;\">\u041d\u0430 \u041b\u0435\u043a\u0446\u0438\u0438 9 \u043a\u0443\u0440\u0441\u0430 \u0421\u0442\u044d\u043d\u0444\u043e\u0440\u0434\u0430\u00a0\u00a0<strong><a href=\"https:\/\/cs193p.sites.stanford.edu\">CS193p &#8212; &#171;Developing\u00a0 Application for iOS&#187;<\/a><\/strong>\u00a0(&#171;\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0434\u043b\u044f iOS&#187;) \u041f\u043e\u043b \u0425\u044d\u0433\u0435\u0440\u0442\u0438 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u0442\u00a0\u0441\u0443\u043f\u0435\u0440 \u0432\u0430\u0436\u043d\u0443\u044e \u0442\u0435\u043c\u0443 &#8212; <b>Property Wrappers <\/b>(\u201c\u041e\u0431\u0435\u0440\u0442\u043a\u0438 \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u201d). \u041c\u044b \u043d\u0430\u043a\u043e\u043d\u0435\u0446-\u0442\u043e \u043f\u043e\u0439\u043c\u0435\u043c, \u0447\u0442\u043e \u0442\u0430\u043a\u0438\u0435 \u0432\u0435\u0449\u0438, \u043a\u0430\u043a <strong><span style=\"color: #680ca1;\">@State<\/span><\/strong> \u0438 <strong><span style=\"color: #680ca1;\">@Published<\/span><\/strong>, \u0434\u0435\u043b\u0430\u044e\u0442 \u201c\u043f\u043e\u0434 \u043a\u0430\u043f\u043e\u0442\u043e\u043c\u201d. \u0414\u0430\u043b\u0435\u0435\u00a0\u043f\u0440\u043e\u0444\u0435\u0441\u0441\u043e\u0440 \u0441\u043b\u0435\u0433\u043a\u0430 \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u0435\u0442 \u0442\u0435\u043c\u0443 \u201c\u0438\u0437\u0434\u0430\u0442\u0435\u043b\u0435\u0439\u201d <strong><span style=\"color: #680ca1;\">Publishers<\/span><\/strong>, \u043f\u043e\u0442\u043e\u043c\u0443 \u0447\u0442\u043e \u0435\u0441\u043b\u0438 \u043c\u044b \u043d\u0430\u0447\u0438\u043d\u0430\u0435\u043c \u0433\u043e\u0432\u043e\u0440\u0438\u0442\u044c \u043e <strong><span style=\"color: #680ca1;\">@Published<\/span><\/strong>, \u0442\u043e \u0431\u044b\u0441\u0442\u0440\u043e \u043f\u0440\u0438\u0445\u043e\u0434\u0438\u043c \u043a \u044d\u0442\u043e\u0439 \u043e\u0447\u0435\u043d\u044c \u0432\u0430\u0436\u043d\u043e\u0439 \u0442\u0435\u043c\u0435, \u043e\u0434\u043d\u0430\u043a\u043e \u043d\u0430 \u044d\u0442\u043e\u0439 \u041b\u0435\u043a\u0446\u0438\u0438 9 \u0434\u0430\u0435\u0442\u0441\u044f \u043b\u0438\u0448\u044c \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043e\u0431\u0437\u043e\u0440 \u043d\u0430 \u044d\u0442\u0443 \u0442\u0435\u043c\u0443, \u0431\u043e\u043b\u0435\u0435 \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e \u044d\u0442\u0430 \u0442\u0435\u043c\u0430 \u0431\u0443\u0434\u0435\u0442 \u043e\u0431\u0441\u0443\u0436\u0434\u0430\u0442\u044c\u0441\u044f \u043f\u043e\u0437\u0436\u0435.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0417\u0430\u0442\u0435\u043c \u043c\u044b \u043f\u043e\u0433\u0440\u0443\u0436\u0430\u0435\u043c\u0441\u044f \u0432 \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u0440, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u043f\u0440\u043e\u0444\u0435\u0441\u0441\u043e\u0440 \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442 \u043d\u0430\u043c \u0433\u0434\u0435, \u043a\u043e\u0433\u0434\u0430 \u0438 \u043a\u0430\u043a \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u201c\u0438\u0437\u0434\u0430\u0442\u0435\u043b\u0438\u201d <strong><span style=\"color: #680ca1;\">Publishers<\/span><\/strong>, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0433\u043e\u0432\u043e\u0440\u0438\u0442 \u043e <strong><span style=\"color: #680ca1;\">@Binding<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043d\u043e\u0432\u043e\u0439 \u0434\u043b\u044f \u043d\u0430\u0441\u00a0<b>Property Wrapper <\/b>(\u201c\u041e\u0431\u0435\u0440\u0442\u043a\u043e\u0439 \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u201d). \u0421\u043e\u0447\u0435\u0442\u0430\u043d\u0438\u0435 \u044d\u0442\u0438\u0445 \u0434\u0432\u0443\u0445 \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u043e\u0432 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043d\u0430\u043c \u0441\u0441\u044b\u043b\u0430\u0442\u044c\u0441\u044f \u043d\u0430 &#171;\u0435\u0434\u0438\u043d\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a \u0438\u0441\u0442\u0438\u043d\u044b&#187; (<strong>source of truth<\/strong>) \u0434\u043b\u044f \u0434\u0430\u043d\u043d\u044b\u0445, \u0430 \u043d\u0435 \u0442\u0440\u0435\u0431\u043e\u0432\u0430\u0442\u044c \u0438\u0445 \u043a\u043e\u043f\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f, \u0447\u0442\u043e \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043f\u043e\u0434\u0432\u0435\u0440\u0436\u0435\u043d\u043e \u043e\u0448\u0438\u0431\u043a\u0430\u043c.<\/span><\/p>\n<p><!--more--><\/p>\n<p><span style=\"font-weight: 400;\"><b>Property Wrappers <\/b>(\u201c\u041e\u0431\u0435\u0440\u0442\u043a\u0438 \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u201d)\u00a0\u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u0432 \u0432\u0438\u0434\u0435 &gt;<strong><span style=\"color: #680ca1;\">@Something<\/span><\/strong>, \u0438 \u0432\u044b \u0443\u0436\u0435 \u0432\u0438\u0434\u0435\u043b\u0438 \u0438\u0445 \u043a\u0430\u043a <strong><span style=\"color: #680ca1;\">@State<\/span><\/strong> \u0438 <strong><span style=\"color: #680ca1;\">@Published<\/span><\/strong>.\u00a0\u041e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f, \u043d\u0430 \u0441\u0430\u043c\u043e\u043c \u0434\u0435\u043b\u0435 \u044d\u0442\u043e \u043f\u0440\u043e\u0441\u0442\u043e \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 <strong><span style=\"color: #c3178d;\">struct<\/span><\/strong>, \u0430 \u0432 \u044d\u0442\u043e\u0439 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0435 \u0435\u0441\u0442\u044c \u043a\u043e\u0434, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u043d\u044f\u0435\u0442 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0448\u0430\u0431\u043b\u043e\u043d \u201c\u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f\u201d \u043a\u043e \u0432\u0441\u0435\u043c \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u043c <strong><span style=\"color: #c3178d;\">vars<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u044d\u0442\u0438 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b <strong><span style=\"color: #c3178d;\">struct<\/span><\/strong> \u201c\u043e\u0431\u043e\u0440\u0430\u0447\u0438\u0432\u0430\u044e\u0442\u201d.\u00a0 \u0412\u044b \u0443\u0436\u0435 \u0437\u043d\u0430\u0435\u0442\u0435 \u043e \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0445 \u0442\u0430\u043a\u0438\u0445 \u201c\u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f\u0445\u201d.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, <strong><span style=\"color: #c3178d;\">@State<\/span><\/strong> \u0437\u0430\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e <strong><span style=\"color: #c3178d;\">var <\/span><\/strong>\u201c\u0436\u0438\u0442\u044c\u201d \u0432 \u201c\u043a\u0443\u0447\u0435\u201d (<i>heap<\/i>), \u0434\u0435\u043b\u0430\u044f \u0435\u0451 <b>writable<\/b> \u0432 <strong><span style=\"color: #680ca1;\">View<\/span><\/strong>, \u0442\u043e \u0435\u0441\u0442\u044c \u0434\u0430\u0435\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u201c\u043f\u0438\u0441\u0430\u0442\u044c\u201d \u0432 \u043d\u0435\u0435 \u043d\u043e\u0432\u044b\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0432 \u043f\u0440\u043e\u0442\u0438\u0432\u043e\u043f\u043e\u043b\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u043e\u0431\u044b\u0447\u043d\u044b\u043c \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u043c <strong><span style=\"color: #c3178d;\">var<\/span><\/strong> \u0432 <strong><span style=\"color: #680ca1;\">View<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u044f\u0432\u043b\u044f\u044e\u0442\u0441\u044f <b>unwritable<\/b>.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u041c\u044b \u0437\u043d\u0430\u0435\u043c, \u0447\u0442\u043e <strong><span style=\"color: #680ca1;\">@Published<\/span><\/strong> \u043f\u0443\u0431\u043b\u0438\u043a\u0443\u0435\u0442 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 <strong><span style=\"color: #680ca1;\">var<\/span><\/strong>, \u0437\u0430\u0441\u0442\u0430\u0432\u043b\u044f\u044f <strong><span style=\"color: #680ca1;\">Views<\/span><\/strong> \u043f\u0435\u0440\u0435\u0440\u0438\u0441\u043e\u0432\u044b\u0432\u0430\u0442\u044c \u0441\u0435\u0431\u044f \u0438\u043b\u0438 \u0434\u0435\u043b\u0430\u0442\u044c \u0434\u0440\u0443\u0433\u0438\u0435 \u043f\u043e\u0434\u043e\u0431\u043d\u044b\u0435 \u0432\u0435\u0449\u0438.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0422\u043e \u0436\u0435 \u0441\u0430\u043c\u043e\u0435 \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0441 <strong><span style=\"color: #680ca1;\">@ObservedObject<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043e\u0442\u0441\u043b\u0435\u0436\u0438\u0432\u0430\u0435\u0442 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 \u0432\u0430\u0448\u0435\u0439 <\/span><strong>ViewModel<\/strong><span style=\"font-weight: 400;\"> \u0438 \u0437\u0430\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 <strong><span style=\"color: #680ca1;\">View<\/span><\/strong> \u043f\u0435\u0440\u0435\u0440\u0438\u0441\u043e\u0432\u044b\u0432\u0430\u0442\u044c \u0441\u0435\u0431\u044f.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><b>Property Wrapper <\/b>(\u201c\u041e\u0431\u0435\u0440\u0442\u043a\u0430 \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u201d) &#8212; \u044d\u0442\u043e \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f \u044f\u0437\u044b\u043a\u0430 <strong>Swift<\/strong><span style=\"font-weight: 400;\">, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u0442 <strong><a href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%A1%D0%B8%D0%BD%D1%82%D0%B0%D0%BA%D1%81%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9_%D1%81%D0%B0%D1%85%D0%B0%D1%80#:~:text=%D0%A1%D0%B8%D0%BD%D1%82%D0%B0%D0%BA%D1%81%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%20%D1%81%D0%B0%D1%85%D0%B0%D1%80%20(%D0%B0%D0%BD%D0%B3%D0%BB.,%D1%8F%D0%B7%D1%8B%D0%BA%D0%B0%20%D0%B1%D0%BE%D0%BB%D0%B5%D0%B5%20%D1%83%D0%B4%D0%BE%D0%B1%D0%BD%D1%8B%D0%BC%20%D0%B4%D0%BB%D1%8F%20%D1%87%D0%B5%D0%BB%D0%BE%D0%B2%D0%B5%D0%BA%D0%B0.\">\u201c\u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u0441\u0430\u0445\u0430\u0440\u0430\u201d<\/a><\/strong>, \u0447\u0442\u043e\u0431\u044b \u0441\u0434\u0435\u043b\u0430\u0442\u044c \u044d\u0442\u0438\u00a0 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b <strong><span style=\"color: #c3178d;\">struct<\/span><\/strong> \u043b\u0435\u0433\u043a\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u043c\u0438 \u0432 \u0432\u0430\u0448\u0435\u043c \u043a\u043e\u0434\u0435.<\/span><\/span><\/p>\n<p><strong><span style=\"font-weight: 400;\">\u0412\u043d\u0443\u0442\u0440\u0438 \u044d\u0442\u043e\u0439 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b <strong><span style=\"color: #c3178d;\">struct<\/span><\/strong> \u0435\u0441\u0442\u044c \u043e\u0447\u0435\u043d\u044c \u0432\u0430\u0436\u043d\u0430\u044f \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0430\u044f <strong><span style=\"color: #c3178d;\">var<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f <strong><span style=\"color: #680ca1;\">wrappedValue<\/span><\/strong> . \u0422\u0418\u041f \u044d\u0442\u043e\u0439 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 <strong><span style=\"color: #c3178d;\">var<\/span><span style=\"color: #680ca1;\"> wrappedValue <\/span><\/strong> \u0434\u043b\u044f \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u0430 <b>Property Wrappers <\/b>(\u201c\u041e\u0431\u0435\u0440\u0442\u043e\u043a \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u201d) \u0441\u043e\u0432\u043f\u0430\u0434\u0430\u0435\u0442 \u0441 \u0422\u0418\u041f\u043e\u043c \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 <strong><span style=\"color: #c3178d;\">var<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u0443\u044e \u043e\u043d\u0438 \u043e\u0431\u043e\u0440\u0430\u0447\u0438\u0432\u0430\u044e\u0442. \u0415\u0441\u0442\u044c \u0435\u0449\u0435 \u043e\u0434\u043d\u0430 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0430\u044f <strong><span style=\"color: #c3178d;\">var<\/span><\/strong> \u0432 \u044d\u0442\u043e\u0439 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0435 <strong><span style=\"color: #c3178d;\">struct<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f <strong><span style=\"color: #ff0000;\">projectedValue<\/span><\/strong>.\u00a0\u0414\u043e\u0441\u0442\u0443\u043f \u043a \u044d\u0442\u043e\u0439 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 <strong><span style=\"color: #ff0000;\">projectedValue<\/span><\/strong> \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0435\u0449\u0451 \u043e\u0434\u043d\u043e\u0433\u043e \u201c\u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u0441\u0430\u0445\u0430\u0440\u0430\u201d &#8212; \u0437\u043d\u0430\u043a\u0430\u00a0<strong><span style=\"color: #ff0000;\">$<\/span><\/strong>, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, <strong><span style=\"color: #ff0000;\">$emojiArt<\/span><\/strong>.\u00a0\u0423 \u043a\u0430\u0436\u0434\u043e\u0433\u043e <b>Property Wrapper <\/b>(\u201c\u041e\u0431\u0435\u0440\u0442\u043a\u0438 \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u201d) \u0438\u043c\u0435\u0435\u0442\u0441\u044f \u0441\u0432\u043e\u0439 \u043e\u0442\u043b\u0438\u0447\u0430\u044e\u0449\u0438\u0439\u0441\u044f \u043e\u0442 \u0434\u0440\u0443\u0433\u0438\u0445 \u0422\u0418\u041f\u00a0<strong><span style=\"color: #ff0000;\">projectedValue<\/span><\/strong>, \u044d\u0442\u043e \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0435\u0433\u043e \u0440\u0435\u0448\u0435\u043d\u0438\u0435.\u00a0\u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, <strong><span style=\"color: #680ca1;\">@Published<\/span><\/strong>\u00a0\u0432\u044b\u0431\u0440\u0430\u043b\u0430 \u0434\u043b\u044f \u0441\u0435\u0431\u044f \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 <strong><span style=\"color: #ff0000;\">projectedValue<\/span><\/strong> \u201c\u0438\u0437\u0434\u0430\u0442\u0435\u043b\u044f\u201d <strong><span style=\"color: #680ca1;\">Publisher<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0443\u0431\u043b\u0438\u043a\u0443\u0435\u0442 <strong><span style=\"color: #680ca1;\">wrappedValue<\/span><\/strong>\u00a0\u0438 \u043d\u0438\u043a\u043e\u0433\u0434\u0430 <strong><span style=\"color: #680ca1;\">Never<\/span><\/strong> \u043d\u0435 \u043e\u0448\u0438\u0431\u0430\u0435\u0442\u0441\u044f.\u00a0<\/span><\/strong><\/p>\n<p><span style=\"font-weight: 400;\">\u0413\u043b\u0430\u0432\u043d\u044b\u0439 \u0441\u043c\u044b\u0441\u043b\u00a0<b>Property Wrapper <\/b>\u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u0442\u0441\u044f \u0432 \u0442\u043e\u043c, \u0447\u0442\u043e \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 <strong><span style=\"color: #c3178d;\">struct<\/span><\/strong> <b>Property Wrapper <\/b>(\u201c\u041e\u0431\u0435\u0440\u0442\u043a\u0438 \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u201d) \u0442\u0438\u043f\u0430 <strong><span style=\"color: #680ca1;\">Published<\/span><\/strong>, \u043c\u043e\u0436\u0435\u0442 \u0447\u0442\u043e-\u0442\u043e \u0435\u0449\u0451 \u0434\u0435\u043b\u0430\u0442\u044c \u043f\u0440\u0438 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0438 (get) \u0438\u043b\u0438 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0438 (set) <strong><span style=\"color: #680ca1;\">wrappedValue<\/span><\/strong>.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0447\u0442\u043e \u0434\u0435\u043b\u0430\u0435\u0442 <strong><span style=\"color: #680ca1;\">Published<\/span><\/strong>, \u043a\u043e\u0433\u0434\u0430 \u0435\u0433\u043e <strong><span style=\"color: #680ca1;\">wrappedValue<\/span><\/strong> \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043b\u0435\u043d?\u00a0\u041e\u043d \u043f\u0443\u0431\u043b\u0438\u043a\u0443\u0435\u0442 \u044d\u0442\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0447\u0435\u0440\u0435\u0437 \u0441\u0432\u043e\u044e \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e <strong><span style=\"color: #ff0000;\">$emojiArt<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u201c\u0438\u0437\u0434\u0430\u0442\u0435\u043b\u0435\u043c\u201d <strong><span style=\"color: #680ca1;\">Publisher<\/span><\/strong>. \u041d\u043e \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u044d\u0442\u043e, <strong><span style=\"color: #680ca1;\">Published<\/span><\/strong> \u043f\u043e\u0441\u044b\u043b\u0430\u0435\u0442 \u0441\u043e\u043e\u0431\u0449\u0435\u043d\u0438\u0435 <strong><span style=\"color: #680ca1;\">objectWillChange.send()<\/span><\/strong> \u0432 <strong><span style=\"color: #680ca1;\">ObservableObject<\/span><\/strong>, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u043e\u043d \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f. \u0422\u0430\u043a\u0438\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c, <strong><span style=\"color: #680ca1;\">Published<\/span><\/strong> \u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0432\u043e\u0432\u043b\u0435\u0447\u0435\u043d\u043d\u044b\u043c \u0432 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0443 (<span style=\"color: #0000ff;\">setting<\/span>) \u0438 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u0438\u0435 (<span style=\"color: #0000ff;\">getting<\/span>) \u044d\u0442\u043e\u0439 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 <strong><span style=\"color: #c3178d;\">var<\/span><\/strong>, \u0430 \u044d\u0442\u043e \u0438\u043c\u0435\u043d\u043d\u043e \u0442\u043e, \u0447\u0442\u043e \u043d\u0430 \u0441\u0430\u043c\u043e\u043c \u0434\u0435\u043b\u0435 \u0434\u0435\u043b\u0430\u044e\u0442 <b>Property Wrappers <\/b>(\u201c\u041e\u0431\u0435\u0440\u0442\u043a\u0438 \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u201d).<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0417\u0430\u0442\u0435\u043c \u043f\u0440\u043e\u0444\u0435\u0441\u0441\u043e\u0440 \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u0442 \u043f\u0440\u0435\u0434\u043f\u0440\u0438\u043d\u0438\u043c\u0430\u0435\u043c\u044b\u0435 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u044f \u0438 <strong><span style=\"color: #ff0000;\">projectedValue<\/span><\/strong> \u043a\u0430\u0436\u0434\u043e\u0433\u043e \u0438\u0437 \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u044b\u0445 \u043d\u0430\u043c <b>Property Wrappers <\/b>(\u201c\u041e\u0431\u0435\u0440\u0442\u043e\u043a \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u201d): <strong><span style=\"color: #680ca1;\">@State<\/span><\/strong>,\u00a0<strong><span style=\"color: #680ca1;\">@Published<\/span><\/strong>,\u00a0<strong><span style=\"color: #680ca1;\">@ObservedObject<\/span><\/strong>,\u00a0<strong><span style=\"color: #680ca1;\">@Binding<\/span><\/strong>,\u00a0<strong><span style=\"color: #680ca1;\">@EnvironmentObject<\/span><\/strong>,\u00a0<strong><span style=\"color: #680ca1;\">@Environment<\/span><\/strong>.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00a0\u201c\u0418\u0437\u0434\u0430\u0442\u0435\u043b\u044c\u201d <strong><span style=\"color: #680ca1;\">Publisher<\/span><\/strong> \u043f\u0443\u0431\u043b\u0438\u043a\u0443\u0435\u0442 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u044b\u0439 \u0422\u0418\u041f \u0434\u0430\u043d\u043d\u044b\u0445 <strong><span style=\"color: #680ca1;\">Output<\/span><\/strong> \u0438 \u043c\u043e\u0436\u0435\u0442 \u043e\u0448\u0438\u0431\u0430\u0442\u044c\u0441\u044f \u0441 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u044b\u043c \u0422\u0418\u041f\u043e\u043c \u043e\u0448\u0438\u0431\u043e\u043a <strong><span style=\"color: #ff0000;\">Failure<\/span><\/strong>, \u0447\u0442\u043e \u043c\u044b \u043c\u043e\u0436\u0435\u043c \u0441 \u043d\u0438\u043c \u0434\u0435\u043b\u0430\u0442\u044c?<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0421\u0430\u043c\u0430\u044f \u0433\u043b\u0430\u0432\u043d\u043e\u0435, \u0447\u0442\u043e \u043c\u044b \u043c\u043e\u0436\u0435\u043c \u0434\u0435\u043b\u0430\u0442\u044c \u0441 \u201c\u0438\u0437\u0434\u0430\u0442\u0435\u043b\u044f\u043c\u0438\u201d <strong><span style=\"color: #680ca1;\">Publishers<\/span><\/strong>, \u044d\u0442\u043e &#171;\u0441\u043b\u0443\u0448\u0430\u0442\u044c&#187; \u0438\u0445.\u00a0&#171;\u0421\u043b\u0443\u0448\u0430\u0442\u044c&#187; \u0438\u0445 &#8212; \u0437\u043d\u0430\u0447\u0438\u0442 \u201c\u043f\u043e\u0434\u043f\u0438\u0441\u0430\u0442\u044c\u0441\u044f\u201d (<i>subscribe<\/i>) \u043d\u0430 \u043d\u0438\u0445. \u041c\u044b \u0440\u0430\u0441\u0441\u043c\u043e\u0442\u0440\u0438\u043c \u0434\u0432\u0430 \u043d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u043d\u044b\u0445 \u0441\u043f\u043e\u0441\u043e\u0431\u0430\u0445 \u0441\u0434\u0435\u043b\u0430\u0442\u044c \u044d\u0442\u043e: <strong><span style=\"color: #680ca1;\">sink<\/span><\/strong> \u0438 <strong><span style=\"color: #680ca1;\">assign<\/span><\/strong><\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0414\u0430\u043b\u0435\u0435 \u043f\u0440\u043e\u0444\u0435\u0441\u0441\u043e\u0440 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e \u043c\u043e\u0434\u0435\u0440\u043d\u0438\u0437\u0438\u0440\u0443\u0435\u0442 \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0435 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435 <strong>EmojiArt<\/strong> \u0432 \u043f\u043b\u0430\u043d\u0435:<\/span><\/p>\n<ul>\n<li><span style=\"font-weight: 400;\"><span style=\"font-weight: 400;\">\u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044e \u043e\u0431\u0440\u0430\u0442\u043d\u043e\u0439 \u0441\u0432\u044f\u0437\u0438 \u043f\u0440\u0438 \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0435 \u0444\u043e\u043d\u043e\u0432\u043e\u0433\u043e \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0438\u0437 \u0438\u043d\u0442\u0435\u0440\u043d\u0435\u0442\u0430,<\/span><\/span><\/li>\n<li><span style=\"font-weight: 400;\">\u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 <strong><span style=\"color: #680ca1;\">@Published<\/span><\/strong><\/span><span style=\"font-weight: 400;\"> \u201c\u0438\u0437\u0434\u0430\u0442\u0435\u043b\u044f\u201d \u0434\u043b\u044f \u0430\u0432\u0442\u043e\u0441\u043e\u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f,<\/span><\/li>\n<li><span style=\"font-weight: 400;\">\u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 <strong><span style=\"color: #680ca1;\">.onReceive<\/span><\/strong><\/span><span style=\"font-weight: 400;\"> \u0434\u043b\u044f \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u0433\u043e \u043c\u0430\u0441\u0448\u0442\u0430\u0431\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0441 \u0446\u0435\u043b\u044c\u044e \u201c\u043f\u043e\u0434\u0433\u043e\u043d\u043a\u0438\u201d \u043f\u0440\u0438 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0438 \u0444\u043e\u043d\u043e\u0432\u043e\u0433\u043e \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f,<\/span><\/li>\n<li><span style=\"font-weight: 400;\">\u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 <strong><span style=\"color: #680ca1;\">URLSession<\/span><\/strong><\/span><span style=\"font-weight: 400;\"> \u201c\u0438\u0437\u0434\u0430\u0442\u0435\u043b\u044c\u201d \u0434\u043b\u044f \u0437\u0430\u0433\u0440\u0443\u0437\u043a\u0438 \u0438\u0437\u043e\u0431\u0440\u0430\u0436\u0435\u043d\u0438\u044f,<\/span><\/li>\n<li><span style=\"font-weight: 400;\">\u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u043c \u0412\u044b\u0431\u043e\u0440 \u041f\u0430\u043b\u0438\u0442\u0440\u044b <\/span><span style=\"font-weight: 400;\">(<strong><span style=\"color: #680ca1;\">@Binding<\/span><\/strong><\/span><span style=\"font-weight: 400;\">)<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\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 9 \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u043d\u0430 \u0441\u0430\u0439\u0442\u0435<strong><a href=\"https:\/\/cs193p.sites.stanford.edu\"> \u043a\u0443\u0440\u0441\u0430 CS193P<\/a> <\/strong>\u0438 \u043d\u0430<a href=\"https:\/\/github.com\/BestKora\/Demo-Winter-2017\"><strong>\u00a0<\/strong><\/a><a href=\"https:\/\/github.com\/BestKora\/CS193P-Spring-2020-DEMO\"><strong>Github<\/strong><\/a>\u00a0\u0434\u043b\u044f <strong>iOS 13<\/strong>\u00a0\u0432 \u043f\u0430\u043f\u043a\u0435 Memorize\u00a0<strong>L9<\/strong>.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0420\u0443\u0441\u0441\u043a\u043e\u044f\u0437\u044b\u0447\u043d\u044b\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 \u041b\u0435\u043a\u0446\u0438\u0438 9, \u0445\u0440\u043e\u043d\u043e\u043c\u0435\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0447\u0435\u0440\u0435\u0437 \u043a\u0430\u0436\u0434\u044b\u0435 5 \u043c\u0438\u043d\u0443\u0442, \u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0439 \u0432 \u0432\u0438\u0434\u0435\u00a0<strong>PDF<\/strong>-\u0444\u0430\u0439\u043b\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u043e\u0436\u043d\u043e \u0441\u043a\u0430\u0447\u0430\u0442\u044c \u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c offline, \u0430 \u0442\u0430\u043a\u0436\u0435 \u0432 \u0444\u043e\u0440\u043c\u0430\u0442\u0435\u00a0<strong>Google Doc<\/strong>\u00a0\u0434\u043e\u0441\u0442\u0443\u043f\u043d\u044b \u043d\u0430<strong>\u00a0<a title=\"\u0414\u043e\u0441\u0442\u0443\u043f \u043a 2-\u043e\u0439 \u0447\u0430\u0441\u0442\u0438 (\u043b\u0435\u043a\u0446\u0438\u0438 6-10) iOS 13\" href=\"https:\/\/bestkora.com\/IosDeveloper\/dostup-k-2-oj-chasti-lektsii-6-10-ios-13\/\">\u043f\u043b\u0430\u0442\u043d\u043e\u0439 \u043e\u0441\u043d\u043e\u0432\u0435<\/a>.<\/strong><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u041d\u0430 \u041b\u0435\u043a\u0446\u0438\u0438 9 \u043a\u0443\u0440\u0441\u0430 \u0421\u0442\u044d\u043d\u0444\u043e\u0440\u0434\u0430\u00a0\u00a0CS193p &#8212; &#171;Developing\u00a0 Application for iOS&#187;\u00a0(&#171;\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u0434\u043b\u044f iOS&#187;) \u041f\u043e\u043b \u0425\u044d\u0433\u0435\u0440\u0442\u0438 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u0442\u00a0\u0441\u0443\u043f\u0435\u0440 \u0432\u0430\u0436\u043d\u0443\u044e \u0442\u0435\u043c\u0443 &#8212; Property Wrappers (\u201c\u041e\u0431\u0435\u0440\u0442\u043a\u0438 \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u201d). \u041c\u044b \u043d\u0430\u043a\u043e\u043d\u0435\u0446-\u0442\u043e \u043f\u043e\u0439\u043c\u0435\u043c, \u0447\u0442\u043e \u0442\u0430\u043a\u0438\u0435 \u0432\u0435\u0449\u0438, \u043a\u0430\u043a @State \u0438 @Published, \u0434\u0435\u043b\u0430\u044e\u0442 \u201c\u043f\u043e\u0434 \u043a\u0430\u043f\u043e\u0442\u043e\u043c\u201d. \u0414\u0430\u043b\u0435\u0435\u00a0\u043f\u0440\u043e\u0444\u0435\u0441\u0441\u043e\u0440 \u0441\u043b\u0435\u0433\u043a\u0430 \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u0435\u0442 \u0442\u0435\u043c\u0443 &hellip; <a href=\"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-9-cs193p-spring-2020-potok-dannyh-data-flow\/\">\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":[55,9,63,62,54],"tags":[58,56,66,64],"class_list":["post-13295","post","type-post","status-publish","format-standard","hentry","category-ios-13","category-lecture","category-stanford-cs-193p-ios-13","category-swift-5","category-swiftui","tag-ios-13","tag-swiftui","tag-xcode-11","tag-lektsii-ios-13"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0420\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u0442 \u0441\u0443\u043f\u0435\u0440 \u0432\u0430\u0436\u043d\u0443\u044e \u0442\u0435\u043c\u0443 - Property Wrappers (\u201c\u041e\u0431\u0435\u0440\u0442\u043a\u0438 \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u201d). \u041c\u044b \u043d\u0430\u043a\u043e\u043d\u0435\u0446-\u0442\u043e \u043f\u043e\u0439\u043c\u0435\u043c, \u043a\u0430\u043a @State, @Published,@ObservedObject, @Binding, @EnvironmentObject, @Environment \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0442. \u0421\u043b\u0435\u0433\u043a\u0430 \u0437\u0430\u0442\u0440\u0430\u0433\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0442\u0435\u043c\u0430 \u201c\u0438\u0437\u0434\u0430\u0442\u0435\u043b\u0435\u0439\u201d Publishers,\" \/>\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=\"swiftui,cs193p,stanford,cs193p spring 2020,reactive ui,mvvm,swift 5.2,xcode 11,zstack,hstack,some view,opaque return type,mvi,generics,@state,\u00a0@published,\u00a0@observedobject,\u00a0@binding,\u00a0@environmentobject,\u00a0@environment,publisher,property wrappers,\u201c\u043e\u0431\u0435\u0440\u0442\u043a\u0430 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\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 9 CS193P Spring 2020 \u2014 \u041f\u043e\u0442\u043e\u043a \u0434\u0430\u043d\u043d\u044b\u0445 (Data Flow). | \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=\"\u0420\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u0442 \u0441\u0443\u043f\u0435\u0440 \u0432\u0430\u0436\u043d\u0443\u044e \u0442\u0435\u043c\u0443 - Property Wrappers (\u201c\u041e\u0431\u0435\u0440\u0442\u043a\u0438 \u0421\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u201d). \u041c\u044b \u043d\u0430\u043a\u043e\u043d\u0435\u0446-\u0442\u043e \u043f\u043e\u0439\u043c\u0435\u043c, \u043a\u0430\u043a @State, @Published,@ObservedObject, @Binding, @EnvironmentObject, @Environment \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0442. \u0421\u043b\u0435\u0433\u043a\u0430 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