{"id":14180,"date":"2021-07-11T06:20:37","date_gmt":"2021-07-11T06:20:37","guid":{"rendered":"https:\/\/bestkora.com\/IosDeveloper\/?p=14180"},"modified":"2021-08-18T08:21:25","modified_gmt":"2021-08-18T08:21:25","slug":"lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021","status":"publish","type":"post","link":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/","title":{"rendered":"\u041b\u0435\u043a\u0446\u0438\u044f 4. \u0411\u043e\u043b\u044c\u0448\u0435 \u043e MVVM enum Optional.  CS193P Spring 2021."},"content":{"rendered":"<p><span style=\"font-weight: 400;\"><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-19.17.55.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14206 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-19.17.55.png\" alt=\"\" width=\"1252\" height=\"414\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-19.17.55.png 1252w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-19.17.55-300x99.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-19.17.55-1024x339.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-19.17.55-768x254.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-19.17.55-500x165.png 500w\" sizes=\"auto, (max-width: 1252px) 100vw, 1252px\" \/><\/a>\u042d\u0442\u043e \u0447\u0435\u0442\u0432\u0435\u0440\u0442\u0430\u044f \u041b\u0435\u043a\u0446\u0438\u044f \u043a\u0443\u0440\u0441\u0430 <a href=\"https:\/\/cs193p.sites.stanford.edu\/\">Stanford CS193p, \u0432\u0435\u0441\u043d\u0430 2021 \u0433\u043e\u0434\u0430, <\/a>\u0438 \u043e\u043d\u0430 \u0441\u0440\u0430\u0437\u0443 \u043d\u0430\u0447\u0438\u043d\u0430\u0435\u0442\u0441\u044f \u0441 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0435\u043d\u0438\u044f \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0433\u043e \u043f\u0440\u0438\u043c\u0435\u0440\u0430 \u043f\u0440\u043e\u0448\u043b\u043e\u0439 \u041b\u0435\u043a\u0446\u0438\u0438 3, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0431\u044b\u043b\u0438 \u0441\u043a\u043e\u043d\u0441\u0442\u0440\u0443\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u043c\u043e\u0434\u0435\u043b\u044c <strong><span style=\"color: #0000ff;\">Model <\/span><\/strong>\u0438 <strong>ViewModel<\/strong> \u0434\u043b\u044f\u00a0\u043a\u0430\u0440\u0442\u043e\u0447\u043d\u043e\u0439 \u0438\u0433\u0440\u044b &#171;\u043d\u0430 \u0437\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u043d\u0438\u0435&#187; <strong>Memorize<\/strong>.\u00a0 <span style=\"color: #680da1;\"><strong>View<\/strong><\/span>\u00a0 (\u0442\u043e \u0435\u0441\u0442\u044c <strong>UI<\/strong>) \u043c\u044b \u0441\u043e\u0437\u0434\u0430\u043b\u0438 \u043d\u0430 \u041b\u0435\u043a\u0446\u0438\u044f\u0445 1\u0438 2. \u041d\u0430 \u044d\u0442\u043e\u0439 \u041b\u0435\u043a\u0446\u0438\u0438 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0430 <strong>MVVM<\/strong> \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u0442\u0441\u044f \u0432\u043e \u0432\u0441\u0435\u0439 \u0441\u0432\u043e\u0435\u0439 \u0440\u0435\u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0439 \u043c\u043e\u0449\u0438.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u041f\u043e\u0441\u043b\u0435 \u0442\u043e\u0433\u043e, \u043a\u0430\u043a <strong>MVVM<\/strong> \u0437\u0430\u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442, \u043f\u0440\u043e\u0444\u0435\u0441\u0441\u043e\u0440 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442\u0441\u044f \u043a \u0441\u043b\u0430\u0439\u0434\u0430\u043c, \u0447\u0442\u043e\u0431\u044b \u0432\u043a\u0440\u0430\u0442\u0446\u0435 \u043f\u043e\u0433\u043e\u0432\u043e\u0440\u0438\u0442\u044c \u043e \u0434\u0432\u0443\u0445 \u0432\u0435\u0449\u0430\u0445. \u041f\u0435\u0440\u0432\u0430\u044f\u00a0 \u2014 \u044d\u0442\u043e \u0435\u0449\u0435 \u043e\u0434\u0438\u043d \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0439 \u0422\u0418\u041f <\/span><strong>Swift<\/strong><span style=\"font-weight: 400;\">, \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u043c\u044b\u0439 \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0435\u043c <\/span><span style=\"color: #d80a77;\"><strong>enum<\/strong><\/span><span style=\"font-weight: 400;\">, \u0430 \u0432\u0442\u043e\u0440\u0430\u044f \u2014 \u044d\u0442\u043e \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u0430\u044f \u0432\u0435\u0440\u0441\u0438\u044f \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f <strong><span style=\"color: #d80a77;\">enum<\/span><\/strong>, \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u043c\u0430\u044f <\/span><strong><span style=\"color: #680da1;\">Optional<\/span><\/strong><span style=\"font-weight: 400;\">. \u041d\u0430\u0432\u0435\u0440\u043d\u043e\u0435, \u044d\u0442\u043e \u043e\u0434\u043d\u043e \u0438\u0437 \u0441\u0430\u043c\u044b\u0445 \u0432\u0430\u0436\u043d\u044b\u0445 \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0439 <\/span><strong><span style=\"color: #d80a77;\">enum<\/span><\/strong><span style=\"font-weight: 400;\">, \u0435\u0441\u043b\u0438 \u043d\u0435 \u0441\u0430\u043c\u043e\u0435 \u0433\u043b\u0430\u0432\u043d\u043e\u0435 <strong><span style=\"color: #d80a77;\">enum<\/span><\/strong> \u0432\u043e \u0432\u0441\u0435\u043c <\/span><strong>Swift<\/strong><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><!--more--><\/p>\n<h2><b>\u0420\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b MVVM<\/b><b>.<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">\u041d\u0430 \u044d\u0442\u043e\u0439 \u041b\u0435\u043a\u0446\u0438\u0438 4 \u043c\u044b \u043d\u0430\u0443\u0447\u0438\u043b\u0438\u0441\u044c \u0434\u0435\u043b\u0430\u0442\u044c \u0442\u0430\u043a\u0438\u0435 \u043c\u043e\u0434\u0435\u043b\u0438 <\/span><strong><span style=\"color: #0000ff;\">Model<\/span><\/strong><span style=\"font-weight: 400;\">, \u043a\u0430\u043a \u044d\u0442\u0430 \u043c\u043e\u0434\u0435\u043b\u044c \u0438\u0433\u0440\u044b <strong>Memorize<\/strong>:<\/span><\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.32.21.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14186 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.32.21.png\" alt=\"\" width=\"1340\" height=\"1342\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.32.21.png 1340w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.32.21-300x300.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.32.21-1022x1024.png 1022w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.32.21-150x150.png 150w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.32.21-768x769.png 768w\" sizes=\"auto, (max-width: 1340px) 100vw, 1340px\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400;\">\u041c\u044b \u0432\u044b\u044f\u0441\u043d\u0438\u043b\u0438, \u0447\u0442\u043e \u044d\u0442\u0438 \u043c\u043e\u0434\u0435\u043b\u0438 <\/span><strong><span style=\"color: #0000ff;\">Model <\/span><\/strong><span style=\"font-weight: 400;\">\u043d\u0435 \u0437\u0430\u0432\u0438\u0441\u044f\u0442 \u043e\u0442 <strong>UI<\/strong>. \u0412\u043e\u0442 \u043f\u043e\u0447\u0435\u043c\u0443 \u043c\u044b \u0438\u043c\u043f\u043e\u0440\u0442\u0438\u0440\u0443\u0435\u043c \u0442\u043e\u043b\u044c\u043a\u043e <\/span><strong><span style=\"color: #680da1;\">Foundation<\/span><\/strong><span style=\"font-weight: 400;\"> \u0438 \u043f\u043e\u0447\u0435\u043c\u0443 \u0432 \u043a\u043e\u0434\u0435 \u043c\u043e\u0434\u0435\u043b\u0438 <\/span><strong><span style=\"color: #0000ff;\">Model <\/span><\/strong><span style=\"font-weight: 400;\">\u043d\u0435\u0442 \u0441\u0441\u044b\u043b\u043e\u043a \u043d\u0430 \u0447\u0442\u043e-\u043b\u0438\u0431\u043e \u0432 <\/span><strong><span style=\"color: #680da1;\">Views<\/span><\/strong><span style=\"font-weight: 400;\"> \u0438\u043b\u0438 <\/span><strong>ViewModel<\/strong><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u041d\u0430\u0448\u0438 \u043c\u043e\u0434\u0435\u043b\u0438 <\/span><strong><span style=\"color: #0000ff;\">Model <\/span><\/strong><span style=\"font-weight: 400;\">\u0438\u043c\u0435\u044e\u0442 \u0414\u0430\u043d\u043d\u044b\u0435 (<\/span><strong>Data<\/strong><span style=\"font-weight: 400;\">) \u043d\u0430\u043f\u043e\u0434\u043e\u0431\u0438\u0435 \u043d\u0430\u0448\u0438\u0445 \u043a\u0430\u0440\u0442 <\/span><strong><span style=\"color: #680da1;\">cards<\/span><\/strong><span style=\"font-weight: 400;\"> \u0438 \u043b\u043e\u0433\u0438\u043a\u0443 (<\/span><strong>Logic<\/strong><span style=\"font-weight: 400;\">), \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0432 \u043d\u0430\u0448\u0435\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0430 \u0432 \u0432\u0438\u0434\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 <\/span><strong><span style=\"color: #680da1;\">choose (_ card: Card)<\/span><\/strong><span style=\"font-weight: 400;\">, \u0432\u044b\u0431\u043e\u0440\u0430 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u0435\u043c \u043a\u0430\u0440\u0442\u044b <strong><span style=\"color: #680da1;\">card<\/span><\/strong> \u0438 \u0432 \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u0442 \u0441\u043e\u043f\u043e\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043a\u0430\u0440\u0442 \u043d\u0430 \u043f\u0440\u0435\u0434\u043c\u0435\u0442 \u0421\u041e\u0412\u041f\u0410\u0414\u0415\u041d\u0418\u042f.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u041c\u044b \u0442\u0430\u043a\u0436\u0435 \u0443\u0437\u043d\u0430\u043b\u0438, \u0447\u0442\u043e \u043c\u043e\u0434\u0435\u043b\u044c <\/span><strong><span style=\"color: #0000ff;\">Model<\/span><\/strong><span style=\"font-weight: 400;\"> \u2014 \u044d\u0442\u043e \u0435\u0434\u0438\u043d\u0441\u0442\u0432\u0435\u043d\u043d\u044b\u0439 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a \u0418\u0421\u0422\u0418\u041d\u042b. \u0412\u0441\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e \u043a\u0430\u0440\u0442\u0430\u0445 <\/span><strong><span style=\"color: #680da1;\">cards<\/span><\/strong><span style=\"font-weight: 400;\">, \u043b\u0435\u0436\u0430\u0442 \u043b\u0438 \u043e\u043d\u0438 \u201c\u043b\u0438\u0446\u043e\u043c\u201d \u0432\u0432\u0435\u0440\u0445, \u0441\u043e\u0432\u043f\u0430\u0434\u0430\u044e\u0442 \u043b\u0438 \u043e\u043d\u0438 \u0438 \u0442\u0430\u043a \u0434\u0430\u043b\u0435\u0435, \u0432\u0441\u0435 \u044d\u0442\u043e \u0437\u0434\u0435\u0441\u044c, \u0432 \u043c\u043e\u0434\u0435\u043b\u0438 <\/span><strong><span style=\"color: #0000ff;\">Model<\/span><\/strong><span style=\"font-weight: 400;\">. \u0411\u043e\u043b\u044c\u0448\u0435 \u043d\u0438\u0433\u0434\u0435 \u044d\u0442\u0430 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043d\u0435 \u0445\u0440\u0430\u043d\u0438\u0442\u0441\u044f.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u041c\u044b \u0443\u0436\u0435 \u0437\u043d\u0430\u043b\u0438 \u0438\u0437 \u041b\u0435\u043a\u0446\u0438\u0438 1, \u0447\u0442\u043e \u0446\u0435\u043b\u044c \u043d\u0430\u0448\u0435\u0433\u043e <\/span><strong><span style=\"color: #680da1;\">View<\/span><\/strong><span style=\"font-weight: 400;\">, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043c\u044b \u0442\u0430\u043c \u0441\u043e\u0437\u0434\u0430\u043b\u0438, \u2014 \u043e\u0442\u0440\u0430\u0436\u0430\u0442\u044c \u043c\u043e\u0434\u0435\u043b\u044c <\/span><strong><span style=\"color: #0000ff;\">Model<\/span><\/strong><span style=\"font-weight: 400;\">. <\/span><\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.39.39.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14187 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.39.39.png\" alt=\"\" width=\"1414\" height=\"870\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.39.39.png 1414w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.39.39-300x185.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.39.39-1024x630.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.39.39-768x473.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.39.39-488x300.png 488w\" sizes=\"auto, (max-width: 1414px) 100vw, 1414px\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400;\">\u041d\u0430\u043f\u043e\u043c\u043d\u0438\u043c, \u0447\u0442\u043e \u043e\u0434\u043d\u043e \u0438\u0437 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0439 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439<\/span> <strong><span style=\"color: #d80a77;\">var<\/span> <span style=\"color: #137107;\">body<\/span><\/strong><span style=\"font-weight: 400;\"><span style=\"color: #680da1;\"><span style=\"color: #000000;\"> \u043b\u044e\u0431\u043e\u0433\u043e<\/span> <strong>View<\/strong><\/span>\u2014 \u044d\u0442\u043e &#171;\u0434\u0430\u0439 \u043c\u043d\u0435 <\/span><span style=\"font-weight: 400;\"><strong>UI<\/strong>,<\/span><span style=\"font-weight: 400;\"> \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442 \u0442\u0435\u043a\u0443\u0449\u0435\u0435 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u043c\u043e\u0434\u0435\u043b\u0438 <\/span><strong><span style=\"color: #0000ff;\">Model<\/span><\/strong><span style=\"font-weight: 400;\">&#171;.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u041c\u044b \u0443\u0437\u043d\u0430\u043b\u0438 \u043e\u0434\u043d\u0443 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0437\u0430\u043c\u0435\u0447\u0430\u0442\u0435\u043b\u044c\u043d\u0443\u044e \u0432\u0435\u0449\u044c \u043e \u043d\u0430\u0448\u0438\u0445 <\/span><strong><span style=\"color: #680da1;\">Views<\/span><\/strong><span style=\"font-weight: 400;\">, \u043e\u043d\u0438 \u2014 \u0434\u0435\u043a\u043b\u0430\u0440\u0430\u0442\u0438\u0432\u043d\u044b:<\/span><\/p>\n<ul>\n<li><strong><span style=\"color: #680da1;\">ScrollView<\/span><\/strong><span style=\"font-weight: 400;\"> \u2014\u00a0 \u0432\u043e\u0442 \u043e\u043d \u043d\u0430 <\/span><strong>UI<\/strong><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li><strong><span style=\"color: #680da1;\">LazyVGrid<\/span><\/strong><span style=\"font-weight: 400;\">\u00a0 \u2014\u00a0 \u0432\u043e\u0442 \u043e\u043d\u0430 \u043d\u0430 <\/span><strong>UI<\/strong><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">\u041a\u0430\u0440\u0442\u044b <\/span><span style=\"font-weight: 400;\"><strong><span style=\"color: #680da1;\">cards<\/span><\/strong> \u2014 <\/span><span style=\"font-weight: 400;\">\u00a0\u0432\u043e\u0442 \u043e\u043d\u0438 \u043d\u0430 <\/span><strong>UI<\/strong><span style=\"font-weight: 400;\">.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u041f\u043e \u043c\u0435\u0440\u0435 \u0440\u0430\u0437\u0432\u0435\u0440\u0442\u044b\u0432\u0430\u043d\u0438\u044f \u043d\u0430\u0448\u0435\u0433\u043e \u043a\u043e\u0434\u0430, \u0440\u0430\u0437\u0432\u043e\u0440\u0430\u0447\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0438 \u043d\u0430\u0448 <\/span><strong><span style=\"color: #680da1;\">View<\/span><\/strong><span style=\"font-weight: 400;\">. \u0412\u0441\u0451, \u0447\u0442\u043e \u043c\u044b \u0434\u0435\u043a\u043b\u0430\u0440\u0438\u0440\u0443\u0435\u043c \u0432 \u043a\u043e\u0434\u0435, \u043f\u043e\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043d\u0430 <\/span><span style=\"font-weight: 400;\">UI<\/span><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.52.32.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14188 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.52.32.png\" alt=\"\" width=\"1414\" height=\"1122\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.52.32.png 1414w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.52.32-300x238.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.52.32-1024x813.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.52.32-768x609.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-11.52.32-378x300.png 378w\" sizes=\"auto, (max-width: 1414px) 100vw, 1414px\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400;\">\u0422\u043e \u0447\u0442\u043e \u043c\u044b \u0432\u0438\u0434\u0438\u043c \u043d\u0430 <\/span><strong>UI<\/strong><span style=\"font-weight: 400;\"> \u2014 \u043f\u043e\u043b\u043d\u043e\u0441\u0442\u044c\u044e \u0420\u0415\u0410\u041a\u0422\u0418\u0412\u041d\u041e\u00a0 \u043f\u043e \u043e\u0442\u043d\u043e\u0448\u0435\u043d\u0438\u044e \u043a \u0442\u043e\u043c\u0443, \u0447\u0442\u043e \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u0432 \u043d\u0430\u0448\u0435\u0439 \u043c\u043e\u0434\u0435\u043b\u0438 <\/span><strong><span style=\"color: #0000ff;\">Model<\/span><\/strong><span style=\"font-weight: 400;\">. \u0418 \u043c\u044b \u0434\u043e\u0441\u0442\u0438\u0433\u0430\u0435\u043c \u0432\u0441\u0435\u0433\u043e \u044d\u0442\u043e\u0433\u043e \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043d\u0430\u0448\u0435\u0439 <\/span><strong>ViewModel<\/strong><span style=\"font-weight: 400;\">, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u043f\u0440\u0438\u0432\u044f\u0437\u044b\u0432\u0430\u0435\u0442 <\/span><strong><span style=\"color: #680da1;\">View<\/span><\/strong><span style=\"font-weight: 400;\"> \u043a \u043c\u043e\u0434\u0435\u043b\u0438 <\/span><strong><span style=\"color: #0000ff;\">Model<\/span><\/strong><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-12.00.40.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14189 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-12.00.40.png\" alt=\"\" width=\"1260\" height=\"956\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-12.00.40.png 1260w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-12.00.40-300x228.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-12.00.40-1024x777.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-12.00.40-768x583.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-12.00.40-395x300.png 395w\" sizes=\"auto, (max-width: 1260px) 100vw, 1260px\" \/><\/a><\/p>\n<p><span style=\"font-weight: 400;\">\u042d\u0442\u0430 <\/span><strong>ViewModel<\/strong><span style=\"font-weight: 400;\"> \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c <strong>\u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0447\u0438\u043a\u043e\u043c<\/strong> (<\/span><span style=\"font-weight: 400;\">interpreter<\/span><span style=\"font-weight: 400;\">).\u00a0<\/span><\/p>\n<p><strong>ViewModel<\/strong><span style=\"font-weight: 400;\"> \u0442\u0430\u043a\u0436\u0435 \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f &#171;\u043f\u0440\u0438\u0432\u0440\u0430\u0442\u043d\u0438\u043a\u043e\u043c&#187; \u0434\u043b\u044f \u043c\u043e\u0434\u0435\u043b\u044c <\/span><strong><span style=\"color: #0000ff;\">Model<\/span><\/strong><span style=\"font-weight: 400;\"> \u043f\u043e \u043e\u0442\u043d\u043e\u0448\u0435\u043d\u0438\u044e \u043a <\/span><span style=\"color: #680da1;\"><strong>View<\/strong><\/span><span style=\"font-weight: 400;\">. \u041e\u043d\u0430 \u0434\u0435\u043b\u0430\u0435\u0442 \u043c\u043e\u0434\u0435\u043b\u044c <\/span><strong><span style=\"color: #680da1;\">model<\/span> <span style=\"color: #d80a77;\">private <\/span><\/strong><span style=\"font-weight: 400;\">\u0438 \u0440\u0430\u0441\u043a\u0440\u044b\u0432\u0430\u0435\u0442 <\/span><strong><span style=\"color: #680da1;\">Views<\/span><\/strong><span style=\"font-weight: 400;\"> \u0442\u043e\u043b\u044c\u043a\u043e \u0442\u0443<\/span> <span style=\"font-weight: 400;\">\u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0438\u043c \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u0430.<\/span><\/p>\n<p><strong>ViewModel<\/strong><span style=\"font-weight: 400;\"> \u0442\u0430\u043a\u0436\u0435 \u0434\u0435\u043b\u0430\u0435\u0442 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u043c \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u0440\u0435\u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0439 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b \u0432 \u043f\u043e\u043b\u043d\u043e\u043c \u043e\u0431\u044a\u0435\u043c\u0435 \u043f\u043e\u0442\u043e\u043c\u0443, \u0447\u0442\u043e \u0437\u0430\u043c\u0435\u0447\u0430\u0435\u0442 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 \u043c\u043e\u0434\u0435\u043b\u0438 <\/span><strong><span style=\"color: #680da1;\">model<\/span><\/strong><span style=\"font-weight: 400;\"> \u0431\u043b\u0430\u0433\u043e\u0434\u0430\u0440\u044f \u0442\u043e\u043c\u0443, \u0447\u0442\u043e <strong>Swift<\/strong> \u0443\u043c\u0435\u0435\u0442 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0438\u0432\u0430\u0442\u044c \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u0445 <strong><span style=\"color: #d80a77;\">struct<\/span><\/strong>, \u0430 <strong><span style=\"color: #680da1;\">model<\/span><\/strong> &#8212; \u044d\u0442\u043e \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430 <strong><span style=\"color: #d80a77;\">struct <span style=\"color: #680da1;\">MemoryGame<\/span><\/span><\/strong>. <strong>Swift<\/strong> \u043d\u0435 \u043c\u043e\u0436\u0435\u0442\u0435 \u0434\u0435\u043b\u0430\u0442\u044c \u044d\u0442\u043e \u0432 \u043a\u043b\u0430\u0441\u0441\u0430\u0445 <strong><span style=\"color: #d80a77;\">class<\/span><\/strong>, \u043d\u043e \u043e\u043d \u043c\u043e\u0436\u0435\u0442 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0438\u0432\u0430\u0442\u044c \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u0430\u0445 <strong><span style=\"color: #d80a77;\">struct<\/span><\/strong>. \u0412\u043e\u0442 \u043e\u0442\u043a\u0443\u0434\u0430 \u043d\u0430\u0448\u0430 <strong>ViewModel<\/strong> \u0437\u043d\u0430\u0435\u0442, \u043a\u043e\u0433\u0434\u0430 \u0447\u0442\u043e-\u0442\u043e \u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f \u0432 \u043d\u0430\u0448\u0435\u0439 \u043c\u043e\u0434\u0435\u043b\u0438 <strong><span style=\"color: #680da1;\">model<\/span><\/strong>, \u0438 \u043a\u0430\u0436\u0434\u044b\u0439 \u0440\u0430\u0437, \u043a\u043e\u0433\u0434\u0430 \u044d\u0442\u043e \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442, \u043f\u0443\u0431\u043b\u0438\u043a\u0443\u0435\u0442 \u201c\u0427\u0442\u043e-\u0442\u043e \u0438\u0437\u043c\u0435\u043d\u0438\u043b\u043e\u0441\u044c\u2026\u201d. <strong>ViewModel<\/strong> \u0441\u043f\u043e\u0441\u043e\u0431\u043d\u0430 \u044d\u0442\u043e \u0434\u0435\u043b\u0430\u0442\u044c \u043f\u043e\u0442\u043e\u043c\u0443, \u0447\u0442\u043e \u201c\u0432\u0435\u0434\u0435\u0442 \u0441\u0435\u0431\u044f\u201d \u043a\u0430\u043a <strong><span style=\"color: #680da1;\">ObservableObject<\/span><\/strong>,<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0414\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u043f\u0440\u043e\u0441\u0442\u043e \u043c\u0430\u0440\u043a\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u043a\u043b\u044e\u0447\u0435\u0432\u044b\u043c \u0441\u043b\u043e\u0432\u043e\u043c <\/span><strong><span style=\"color: #680da1;\">@Published<\/span><\/strong><span style=\"font-weight: 400;\"> \u043d\u0430\u0448\u0443 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e <\/span><strong><span style=\"color: #d80a77;\">var<\/span><\/strong> <span style=\"font-weight: 400;\"><strong><span style=\"color: #680da1;\">model<\/span><\/strong>, \u0438 \u0435\u0441\u043b\u0438 \u0432 \u043d\u0435\u0439 \u0447\u0442\u043e-\u0442\u043e <\/span><span style=\"font-weight: 400;\">\u0438\u0437\u043c\u0435\u043d\u0438\u0442\u0441\u044f, \u0431\u0443\u0434\u0435\u0442 \u0432\u044b\u0437\u0432\u0430\u043d\u0430 \u0441\u043a\u0440\u044b\u0442\u0430\u044f \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0430\u044f <span style=\"color: #d80a77;\"><strong>var<\/strong><\/span> <span style=\"color: #680da1;\"><strong>objectWillChange<\/strong><\/span> \u0441\u043e \u0441\u0432\u043e\u0438\u043c \u043c\u0435\u0442\u043e\u0434\u043e\u043c <\/span><span style=\"font-weight: 400;\"><span style=\"color: #680da1;\"><strong>send()<\/strong><\/span>,<\/span><span style=\"font-weight: 400;\"> \u0438 \u043f\u0443\u0441\u0442\u044c \u041c\u0438\u0440 \u0443\u0437\u043d\u0430\u0435\u0442, \u0447\u0442\u043e \u0447\u0442\u043e-\u0442\u043e \u0438\u0437\u043c\u0435\u043d\u0438\u043b\u043e\u0441\u044c \u0432 \u043d\u0430\u0448\u0435\u0439 \u043c\u043e\u0434\u0435\u043b\u0438 <\/span><strong><span style=\"color: #680da1;\">model<\/span><\/strong><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0417\u0430\u0442\u0435\u043c \u043d\u0430\u0448 <\/span><strong><span style=\"color: #680da1;\">View<\/span><\/strong><span style=\"font-weight: 400;\">, \u0438\u0437-\u0437\u0430 \u0442\u043e\u0433\u043e, \u0447\u0442\u043e \u043e\u043d \u043f\u043e\u043c\u0435\u0442\u0438\u043b \u0441\u0432\u043e\u044e \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e <\/span><strong><span style=\"color: #d80a77;\">var<\/span><span style=\"color: #680da1;\"> viewModel <\/span><\/strong><span style=\"font-weight: 400;\">\u043a\u0430\u043a <\/span><strong><span style=\"color: #680da1;\">@ObservedObject<\/span><\/strong><span style=\"font-weight: 400;\">, \u043e\u043d \u0431\u0443\u0434\u0435\u0442 &#171;\u0441\u043b\u0443\u0448\u0430\u0442\u044c&#187; \u044d\u0442\u0438 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u043c\u043e\u0434\u0435\u043b\u0438 <strong><span style=\"color: #680da1;\">model<\/span><\/strong> \u0438 \u043f\u0435\u0440\u0435\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0442\u044c \u0441\u0432\u043e\u044e \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e <\/span><span style=\"color: #d80a77;\"><strong>var<\/strong><\/span><strong><span style=\"color: #680da1;\"> body<\/span><\/strong><span style=\"font-weight: 400;\"> \u043f\u0440\u0438 \u043b\u044e\u0431\u043e\u043c \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0438 <\/span><strong><span style=\"color: #680da1;\">viewModel.model<\/span><\/strong><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-15.20.26.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-14191 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-15.20.26.png\" alt=\"\" width=\"1310\" height=\"846\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-15.20.26.png 1310w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-15.20.26-300x194.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-15.20.26-1024x661.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-15.20.26-768x496.png 768w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-15.20.26-465x300.png 465w\" sizes=\"auto, (max-width: 1310px) 100vw, 1310px\" \/><\/a><\/p>\n<p><strong>SwiftUI<\/strong><span style=\"font-weight: 400;\"> \u0434\u0435\u043b\u0430\u0435\u0442 \u0432\u0441\u0435 \u044d\u0442\u043e \u0430\u0432\u0442\u043e\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u0438. \u0418 \u044d\u0442\u043e \u043f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u043e\u0447\u0435\u043d\u044c \u044d\u0444\u0444\u0435\u043a\u0442\u0438\u0432\u043d\u043e. \u0422\u043e\u043b\u044c\u043a\u043e \u0442\u0435 <\/span><strong><span style=\"color: #680da1;\">View<\/span><\/strong><span style=\"font-weight: 400;\"><strong><span style=\"color: #680da1;\">s<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0438\u0437\u043c\u0435\u043d\u0438\u043b\u0438\u0441\u044c, \u043f\u0435\u0440\u0435\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u044e\u0442 \u0441\u0432\u043e\u044e \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e <\/span><strong><span style=\"color: #d80a77;\">var<\/span> <span style=\"color: #680da1;\">body<\/span><\/strong><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0418\u0442\u0430\u043a, <\/span><span style=\"color: #680da1;\"><strong>@ObservedObject <\/strong><\/span><span style=\"font-weight: 400;\">\u043c\u0435\u043d\u044f\u0435\u0442\u0441\u044f. \u041c\u044b \u043f\u0435\u0440\u0435\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u0435\u043c \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u0443\u044e <\/span><span style=\"color: #d80a77;\"><strong>var<\/strong><\/span><span style=\"font-weight: 400; color: #137107;\"> body<\/span><span style=\"font-weight: 400;\">, \u043d\u043e \u043a\u043e\u0433\u0434\u0430 \u0434\u043e \u044d\u0442\u043e\u0433\u043e \u0434\u043e\u0445\u043e\u0434\u0438\u0442, &#171;\u043f\u0440\u043e\u043a\u0440\u0443\u0442\u043a\u0430&#187; <strong><span style=\"color: #680da1;\">ScrollView<\/span><\/strong>, &#171;\u0441\u0435\u0442\u043a\u0430&#187; <strong><span style=\"color: #680da1;\">LazyVGrid<\/span><\/strong> \u0438 \u044d\u0442\u0438 \u043a\u0430\u0440\u0442\u044b <strong><span style=\"color: #680da1;\">CardViews<\/span><\/strong> \u043f\u0435\u0440\u0435\u0441\u0442\u0440\u0430\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0435 \u0441\u0432\u043e\u0438 <\/span><strong><span style=\"color: #d80a77;\">var<\/span><span style=\"color: #137107;\"> body<\/span><\/strong><span style=\"font-weight: 400;\"> \u0432 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 <\/span><span style=\"font-weight: 400;\">\u043e\u0442 \u0442\u043e\u0433\u043e, \u0434\u0435\u0439\u0441\u0442\u0432\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u043b\u0438 \u043e\u043d\u0438 \u0438\u0437\u043c\u0435\u043d\u0438\u043b\u0438\u0441\u044c. \u042d\u0442\u043e \u043e\u0434\u0438\u043d &#171;\u043a\u043e\u043d\u0442\u0443\u0440&#187; \u0440\u0430\u0431\u043e\u0442\u044b <strong>MVVM<\/strong>.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0414\u0440\u0443\u0433\u043e\u0439 &#171;\u043a\u043e\u043d\u0442\u0443\u0440&#187; \u0440\u0430\u0431\u043e\u0442\u044b <strong>MVVM<\/strong> \u0441\u0432\u044f\u0437\u0430\u043d \u0441\u00a0\u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0435\u043c \u0436\u0435\u0441\u0442 <\/span><span style=\"font-weight: 400;\"><strong>Tap<\/strong> \u0438\u043b\u0438 \u043a\u0430\u043a\u043e\u0433\u043e-\u0442\u043e \u0434\u0440\u0443\u0433\u043e\u0433\u043e \u043c\u0443\u043b\u044c\u0442\u0438\u0442\u0430\u0447 (multi touch) \u0436\u0435\u0441\u0442\u0430 \u0438 <\/span><span style=\"font-weight: 400;\">\u0432\u044b\u0440\u0430\u0436\u0430\u0435\u0442\u0441\u044f \u0432 \u0432\u0438\u0434\u0435 \u0444\u0443\u043d\u043a\u0446\u0438\u0438 <strong><span style=\"color: #d80a77;\">func<\/span><\/strong> \u0432 \u043d\u0430\u0448\u0435\u0439 <\/span><strong>ViewModel<\/strong><span style=\"font-weight: 400;\"> \u043a\u0430\u043a \u041d\u0410\u041c\u0415\u0420\u0415\u041d\u0418\u0415 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f. \u0412 \u044d\u0442\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u043d\u0430\u0448\u0430 <\/span><strong>ViewModel<\/strong><span style=\"font-weight: 400;\"> \u0432\u044b\u044f\u0441\u043d\u044f\u0435\u0442, \u0447\u0442\u043e \u043d\u0443\u0436\u043d\u043e \u0434\u0435\u043b\u0430\u0442\u044c \u0432 \u043c\u043e\u0434\u0435\u043b\u0438 <strong><span style=\"color: #0000ff;\">Model<\/span><\/strong>.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u042d\u0442\u043e \u0432 \u0434\u0432\u0443\u0445 \u0441\u043b\u043e\u0432\u0430\u0445 \u0432\u0441\u0435 \u043e <\/span><span style=\"font-weight: 400;\"><strong>MVVM<\/strong>, \u0432 \u041b\u0435\u043a\u0446\u0438\u0438 4 \u0432\u0441\u0435 \u043e\u043f\u0438\u0441\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u043e\u0447\u0435\u043d\u044c \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e.<\/span><\/p>\n<h2><b>\u0422\u0418\u041f \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0435 <\/b><span style=\"color: #d80a77;\"><b>enum<\/b><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">\u041f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f <\/span><strong><span style=\"color: #d80a77;\">enum<\/span><\/strong><span style=\"font-weight: 400;\"> \u2014 \u044d\u0442\u043e \u0435\u0449\u0435 \u043e\u0434\u043d\u0430 \u0440\u0430\u0437\u043d\u043e\u0432\u0438\u0434\u043d\u043e\u0441\u0442\u044c \u0422\u0418\u041f\u043e\u0432 \u043d\u0430\u043f\u043e\u0434\u043e\u0431\u0438\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b <\/span><strong><span style=\"color: #d80a77;\">struct<\/span><\/strong><span style=\"font-weight: 400;\"> \u0438\u043b\u0438 \u043a\u043b\u0430\u0441\u0441\u0430 <\/span><strong><span style=\"color: #d80a77;\">class<\/span><\/strong><span style=\"font-weight: 400;\">, \u0432\u0441\u0435 \u043e\u043d\u0438 \u0441\u043e\u0437\u0434\u0430\u044e\u0442 \u0431\u043b\u043e\u0447\u043d\u044b\u0435 \u0441\u0442\u0440\u0443\u043a\u0442\u0443\u0440\u044b \u0434\u0430\u043d\u043d\u044b\u0445, \u043d\u043e \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f <\/span><strong><span style=\"color: #d80a77;\">enum<\/span><\/strong><span style=\"font-weight: 400;\"> \u0432\u0441\u0435 \u0435\u0433\u043e \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u2014 \u0434\u0438\u0441\u043a\u0440\u0435\u0442\u043d\u044b\u0435 \u0441\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u044f. \u041f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044e <strong><span style=\"color: #d80a77;\">enum<\/span><\/strong> \u043f\u0440\u043e\u0444\u0435\u0441\u0441\u043e\u0440\u00a0 \u0443\u0434\u0435\u043b\u044f\u0435\u0442 \u043e\u0447\u0435\u043d\u044c \u043c\u043d\u043e\u0433\u043e \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u044f.<\/span><\/p>\n<h2><b>\u0422\u0418\u041f <\/b><span style=\"color: #680da1;\"><b>Optional<\/b><\/span><\/h2>\n<p><span style=\"font-weight: 400;\">\u042d\u0442\u043e \u0441\u0430\u043c\u043e\u0435 \u0412\u0410\u0416\u041d\u041e\u0415 \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0438 <\/span><strong><span style=\"color: #d80a77;\">enum <\/span><\/strong><span style=\"font-weight: 400;\">\u0432\u043e \u0432\u0441\u0435\u043c <\/span><strong>Swift<\/strong><span style=\"font-weight: 400;\">, \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f <\/span><strong><span style=\"color: #680da1;\">Optional<\/span><\/strong><span style=\"font-weight: 400;\">. <\/span><span style=\"font-weight: 400;\"><strong><span style=\"color: #680da1;\">Optional<\/span><\/strong> \u2014 <\/span><span style=\"font-weight: 400;\">\u044d\u0442\u043e \u043f\u0440\u0438\u0447\u0438\u043d\u0430 \u0432\u0435\u043b\u0438\u043a\u043e\u0433\u043e \u0443\u0436\u0430\u0441\u0430 \u0434\u043b\u044f \u0441\u0442\u0443\u0434\u0435\u043d\u0442\u043e\u0432, \u0432\u043f\u0435\u0440\u0432\u044b\u0435 \u0438\u0437\u0443\u0447\u0430\u044e\u0449\u0438\u0445 <\/span><strong>Swift<\/strong><span style=\"font-weight: 400;\">, \u043d\u043e <\/span><span style=\"font-weight: 400;\"><strong><span style=\"color: #680da1;\">Optional<\/span><\/strong> \u2014 <\/span><span style=\"font-weight: 400;\">\u044d\u0442\u043e \u043f\u0440\u043e\u0441\u0442\u043e \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0435 <\/span><strong><span style=\"color: #d80a77;\">enum<\/span><\/strong><span style=\"font-weight: 400;\">, \u043d\u0435 \u0431\u043e\u043b\u0435\u0435 \u0442\u043e\u0433\u043e.<\/span><\/p>\n<p><span style=\"font-weight: 400;\"><strong><span style=\"color: #680da1;\"> Optional<\/span><\/strong> \u043d\u0430 \u0443\u0434\u0438\u0432\u043b\u0435\u043d\u0438\u0435 \u0432\u0441\u0442\u0440\u0435\u0447\u0430\u0435\u0442\u0441\u044f \u0442\u0430\u043a \u0447\u0430\u0441\u0442\u043e, \u0447\u0442\u043e <\/span><strong>Swift<\/strong><span style=\"font-weight: 400;\"> \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 \u043e\u0433\u0440\u043e\u043c\u043d\u043e\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u0445\u043e\u0440\u043e\u0448\u0435\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, \u0430 \u043f\u043e \u0441\u0443\u0442\u0438 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0441\u0430, \u0434\u043b\u044f \u0442\u043e\u0433\u043e, \u0447\u0442\u043e\u0431\u044b \u0440\u0435\u0430\u043b\u044c\u043d\u043e \u043e\u0431\u043b\u0435\u0433\u0447\u0438\u0442\u044c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f <\/span><strong><span style=\"color: #d80a77;\">enum<\/span> <span style=\"color: #680da1;\">Optional<\/span><\/strong><span style=\"font-weight: 400;\">. \u0412\u043e\u0441\u043a\u043b\u0438\u0446\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u0439 <strong><span style=\"color: #680da1;\">!<\/span> <\/strong>\u0437\u043d\u0430\u043a, \u0432\u043e\u043f\u0440\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 <strong><span style=\"color: #680da1;\">?<\/span><\/strong> \u0437\u043d\u0430\u043a, \u0434\u0432\u043e\u0439\u043d\u043e\u0439 \u0432\u043e\u043f\u0440\u043e\u0441\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 <strong><span style=\"color: #680da1;\">??<\/span> <\/strong>\u0437\u043d\u0430\u043a,\u00a0 <strong><span style=\"color: #d80a77;\">nil<\/span><\/strong>, <strong><span style=\"color: #d80a77;\">if let<\/span><\/strong> &#8212; \u0432\u0441\u0435 \u044d\u0442\u043e \u201c\u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u0441\u0430\u0445\u0430\u0440\u201d \u0434\u043b\u044f <strong><span style=\"color: #680da1;\">Optional<\/span><\/strong>, \u0438 \u043f\u0440\u043e\u0444\u0435\u0441\u0441\u043e\u0440 \u0434\u0430\u0451\u0442 \u043f\u0440\u0435\u043a\u0440\u0430\u0441\u043d\u0443\u044e \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0446\u0438\u044e \u044d\u0442\u043e\u043c\u0443 \u201c\u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0447\u0435\u0441\u043a\u043e\u043c\u0443 \u0441\u0430\u0445\u0430\u0440\u0443\u201d \u0441 \u0442\u043e\u0447\u043a\u0438 \u0437\u0440\u0435\u043d\u0438\u044f \u043e\u0431\u044b\u0447\u043d\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u043d\u0430\u0434 \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f\u043c\u0438 <strong><span style=\"color: #d80a77;\">enum<\/span><\/strong>.<\/span><\/p>\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 4 \u043d\u0430\u0445\u043e\u0434\u0438\u0442\u0441\u044f \u043d\u0430<a href=\"https:\/\/github.com\/BestKora\/Demo-Winter-2017\"><strong>\u00a0<\/strong><\/a><a href=\"https:\/\/github.com\/BestKora\/CS193P-Spring-2021-iOS14\"><strong>Github<\/strong><\/a>\u00a0\u0434\u043b\u044f <strong>iOS 14<\/strong>\u00a0\u0432 \u043f\u0430\u043f\u043a\u0435 Memorize\u00a0<strong>L4<\/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 4, \u0438\u043b\u043b\u044e\u0441\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439, \u0445\u0440\u043e\u043d\u043e\u043c\u0435\u0442\u0440\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u0438 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0439 \u0432 \u0432\u0438\u0434\u0435 <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 1-\u043e\u0439 \u0447\u0430\u0441\u0442\u0438 (\u043b\u0435\u043a\u0446\u0438\u0438 1-5) iOS 14\" href=\"https:\/\/bestkora.com\/IosDeveloper\/dostup-k-1-oj-chasti-ios-14\/\">\u043f\u043b\u0430\u0442\u043d\u043e\u0439 \u043e\u0441\u043d\u043e\u0432\u0435<\/a>.<\/strong><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u042d\u0442\u043e \u0447\u0435\u0442\u0432\u0435\u0440\u0442\u0430\u044f \u041b\u0435\u043a\u0446\u0438\u044f \u043a\u0443\u0440\u0441\u0430 Stanford CS193p, \u0432\u0435\u0441\u043d\u0430 2021 \u0433\u043e\u0434\u0430, \u0438 \u043e\u043d\u0430 \u0441\u0440\u0430\u0437\u0443 \u043d\u0430\u0447\u0438\u043d\u0430\u0435\u0442\u0441\u044f \u0441 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0435\u043d\u0438\u044f \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u043e\u0433\u043e \u043f\u0440\u0438\u043c\u0435\u0440\u0430 \u043f\u0440\u043e\u0448\u043b\u043e\u0439 \u041b\u0435\u043a\u0446\u0438\u0438 3, \u043d\u0430 \u043a\u043e\u0442\u043e\u0440\u043e\u0439 \u0431\u044b\u043b\u0438 \u0441\u043a\u043e\u043d\u0441\u0442\u0440\u0443\u0438\u0440\u043e\u0432\u0430\u043d\u044b \u043c\u043e\u0434\u0435\u043b\u044c Model \u0438 ViewModel \u0434\u043b\u044f\u00a0\u043a\u0430\u0440\u0442\u043e\u0447\u043d\u043e\u0439 \u0438\u0433\u0440\u044b &#171;\u043d\u0430 \u0437\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u043d\u0438\u0435&#187; Memorize.\u00a0 View\u00a0 (\u0442\u043e \u0435\u0441\u0442\u044c UI) \u043c\u044b \u0441\u043e\u0437\u0434\u0430\u043b\u0438 \u043d\u0430 &hellip; <a href=\"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/\">\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":[71,9,72,62,54],"tags":[70,77,73,74,56],"class_list":["post-14180","post","type-post","status-publish","format-standard","hentry","category-ios-14","category-lecture","category-stanford-cs-193p-ios-14","category-swift-5","category-swiftui","tag-ios-14","tag-lecture-4","tag-stanford-cs193p-spring-2021","tag-swift-5-4","tag-swiftui"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0420\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u0442\u0441\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0430 MVVM \u0432\u043e \u0432\u0441\u0435\u0439 \u0441\u0432\u043e\u0435\u0439 \u0440\u0435\u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0439 \u043c\u043e\u0449\u0438. \u0420\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0435 \u0422\u0418\u041f\u044b Swift: \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0435 enum \u0438 Optional.\" \/>\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=\"cs193p,stanford cs193p,cs193p spring 2021,swiftui,swift,mvvm,viewmodel,\u0441\u0442\u044d\u043d\u0444\u043e\u0440\u0434\u0441\u043a\u0438\u0439 \u043a\u0443\u0440\u0441 cs193p \u0432\u0435\u0441\u043d\u0430 2021,ios 14,\u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 ios \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439,model-view-viewmodel,declarative programming,enum,optional,\u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f,unwrapped optional,observableobject,@published,objectwillchange,@observedobject\" \/>\n\t<link rel=\"canonical\" href=\"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/\" \/>\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 4. \u0411\u043e\u043b\u044c\u0448\u0435 \u043e MVVM enum Optional. CS193P Spring 2021. | \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\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u0442\u0441\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0430 MVVM \u0432\u043e \u0432\u0441\u0435\u0439 \u0441\u0432\u043e\u0435\u0439 \u0440\u0435\u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0439 \u043c\u043e\u0449\u0438. \u0420\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0435 \u0422\u0418\u041f\u044b Swift: \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0435 enum \u0438 Optional.\" \/>\n\t\t<meta property=\"og:url\" content=\"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/\" \/>\n\t\t<meta property=\"article:published_time\" content=\"2021-07-11T06:20:37+00:00\" \/>\n\t\t<meta property=\"article:modified_time\" content=\"2021-08-18T08:21:25+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 4. \u0411\u043e\u043b\u044c\u0448\u0435 \u043e MVVM enum Optional. CS193P Spring 2021. | \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 name=\"twitter:description\" content=\"\u0420\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u0442\u0441\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0430 MVVM \u0432\u043e \u0432\u0441\u0435\u0439 \u0441\u0432\u043e\u0435\u0439 \u0440\u0435\u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0439 \u043c\u043e\u0449\u0438. \u0420\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0435 \u0422\u0418\u041f\u044b Swift: \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0435 enum \u0438 Optional.\" \/>\n\t\t<script type=\"application\/ld+json\" class=\"aioseo-schema\">\n\t\t\t{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\\\/#article\",\"name\":\"\\u041b\\u0435\\u043a\\u0446\\u0438\\u044f 4. \\u0411\\u043e\\u043b\\u044c\\u0448\\u0435 \\u043e MVVM enum Optional. CS193P Spring 2021. | \\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.\",\"headline\":\"\\u041b\\u0435\\u043a\\u0446\\u0438\\u044f 4. \\u0411\\u043e\\u043b\\u044c\\u0448\\u0435 \\u043e MVVM enum Optional.  CS193P Spring 2021.\",\"author\":{\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/author\\\/tatiana-lornilovagmail-com\\\/#author\"},\"publisher\":{\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/#person\"},\"image\":{\"@type\":\"ImageObject\",\"url\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/wp-content\\\/uploads\\\/2021\\\/07\\\/Screenshot-2021-07-11-at-19.17.55.png\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\\\/#articleImage\",\"width\":1252,\"height\":414},\"datePublished\":\"2021-07-11T06:20:37+00:00\",\"dateModified\":\"2021-08-18T08:21:25+00:00\",\"inLanguage\":\"ru-RU\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\\\/#webpage\"},\"isPartOf\":{\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\\\/#webpage\"},\"articleSection\":\"iOS 14, Lecture, Stanford CS 193P iOS 14, Swift 5, SwiftUI, iOS 14, Lecture 4, Stanford CS193P Spring 2021, Swift 5.4, SwiftUI\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\\\/#breadcrumblist\",\"itemListElement\":[{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper#listItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/category\\\/lecture\\\/#listItem\",\"name\":\"Lecture\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/category\\\/lecture\\\/#listItem\",\"position\":2,\"name\":\"Lecture\",\"item\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/category\\\/lecture\\\/\",\"nextItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\\\/#listItem\",\"name\":\"\\u041b\\u0435\\u043a\\u0446\\u0438\\u044f 4. \\u0411\\u043e\\u043b\\u044c\\u0448\\u0435 \\u043e MVVM enum Optional.  CS193P Spring 2021.\"},\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper#listItem\",\"name\":\"Home\"}},{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\\\/#listItem\",\"position\":3,\"name\":\"\\u041b\\u0435\\u043a\\u0446\\u0438\\u044f 4. \\u0411\\u043e\\u043b\\u044c\\u0448\\u0435 \\u043e MVVM enum Optional.  CS193P Spring 2021.\",\"previousItem\":{\"@type\":\"ListItem\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/category\\\/lecture\\\/#listItem\",\"name\":\"Lecture\"}}]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/#person\",\"name\":\"tatiana.kornilova@gmail.com\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\\\/#personImage\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/33ccc19059014d8a7849c3621afa2b66a5f3e50ac7291c91c30ff35df5747628?s=96&d=mm&r=g\",\"width\":96,\"height\":96,\"caption\":\"tatiana.kornilova@gmail.com\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/author\\\/tatiana-lornilovagmail-com\\\/#author\",\"url\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/author\\\/tatiana-lornilovagmail-com\\\/\",\"name\":\"tatiana.kornilova@gmail.com\",\"image\":{\"@type\":\"ImageObject\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\\\/#authorImage\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/33ccc19059014d8a7849c3621afa2b66a5f3e50ac7291c91c30ff35df5747628?s=96&d=mm&r=g\",\"width\":96,\"height\":96,\"caption\":\"tatiana.kornilova@gmail.com\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\\\/#webpage\",\"url\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\\\/\",\"name\":\"\\u041b\\u0435\\u043a\\u0446\\u0438\\u044f 4. \\u0411\\u043e\\u043b\\u044c\\u0448\\u0435 \\u043e MVVM enum Optional. CS193P Spring 2021. | \\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.\",\"description\":\"\\u0420\\u0435\\u0430\\u043b\\u0438\\u0437\\u0443\\u0435\\u0442\\u0441\\u044f \\u0430\\u0440\\u0445\\u0438\\u0442\\u0435\\u043a\\u0442\\u0443\\u0440\\u0430 MVVM \\u0432\\u043e \\u0432\\u0441\\u0435\\u0439 \\u0441\\u0432\\u043e\\u0435\\u0439 \\u0440\\u0435\\u0430\\u043a\\u0442\\u0438\\u0432\\u043d\\u043e\\u0439 \\u043c\\u043e\\u0449\\u0438. \\u0420\\u0430\\u0441\\u0441\\u043c\\u0430\\u0442\\u0440\\u0438\\u0432\\u0430\\u044e\\u0442\\u0441\\u044f \\u0441\\u0438\\u0441\\u0442\\u0435\\u043c\\u043d\\u044b\\u0435 \\u0422\\u0418\\u041f\\u044b Swift: \\u043f\\u0435\\u0440\\u0435\\u0447\\u0438\\u0441\\u043b\\u0435\\u043d\\u0438\\u0435 enum \\u0438 Optional.\",\"inLanguage\":\"ru-RU\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/#website\"},\"breadcrumb\":{\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\\\/#breadcrumblist\"},\"author\":{\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/author\\\/tatiana-lornilovagmail-com\\\/#author\"},\"creator\":{\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/author\\\/tatiana-lornilovagmail-com\\\/#author\"},\"datePublished\":\"2021-07-11T06:20:37+00:00\",\"dateModified\":\"2021-08-18T08:21:25+00:00\"},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/#website\",\"url\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/\",\"name\":\"\\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.\",\"description\":\"\\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 \\\" \\u0420\\u0430\\u0437\\u0440\\u0430\\u0431\\u043e\\u0442\\u043a\\u0430 iOS \\u043f\\u0440\\u0438\\u043b\\u043e\\u0436\\u0435\\u043d\\u0438\\u0439\\\" 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.\",\"inLanguage\":\"ru-RU\",\"publisher\":{\"@id\":\"https:\\\/\\\/bestkora.com\\\/IosDeveloper\\\/#person\"}}]}\n\t\t<\/script>\n\t\t<!-- All in One SEO -->\n\n","aioseo_head_json":{"title":"\u041b\u0435\u043a\u0446\u0438\u044f 4. \u0411\u043e\u043b\u044c\u0448\u0435 \u043e MVVM enum Optional. CS193P Spring 2021. | \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.","description":"\u0420\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u0442\u0441\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0430 MVVM \u0432\u043e \u0432\u0441\u0435\u0439 \u0441\u0432\u043e\u0435\u0439 \u0440\u0435\u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0439 \u043c\u043e\u0449\u0438. \u0420\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0435 \u0422\u0418\u041f\u044b Swift: \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0435 enum \u0438 Optional.","canonical_url":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/","robots":"max-snippet:-1, max-image-preview:large, max-video-preview:-1","keywords":"cs193p,stanford cs193p,cs193p spring 2021,swiftui,swift,mvvm,viewmodel,\u0441\u0442\u044d\u043d\u0444\u043e\u0440\u0434\u0441\u043a\u0438\u0439 \u043a\u0443\u0440\u0441 cs193p \u0432\u0435\u0441\u043d\u0430 2021,ios 14,\u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 ios \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439,model-view-viewmodel,declarative programming,enum,optional,\u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f,unwrapped optional,observableobject,@published,objectwillchange,@observedobject","webmasterTools":{"miscellaneous":""},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/#article","name":"\u041b\u0435\u043a\u0446\u0438\u044f 4. \u0411\u043e\u043b\u044c\u0448\u0435 \u043e MVVM enum Optional. CS193P Spring 2021. | \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.","headline":"\u041b\u0435\u043a\u0446\u0438\u044f 4. \u0411\u043e\u043b\u044c\u0448\u0435 \u043e MVVM enum Optional.  CS193P Spring 2021.","author":{"@id":"https:\/\/bestkora.com\/IosDeveloper\/author\/tatiana-lornilovagmail-com\/#author"},"publisher":{"@id":"https:\/\/bestkora.com\/IosDeveloper\/#person"},"image":{"@type":"ImageObject","url":"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2021\/07\/Screenshot-2021-07-11-at-19.17.55.png","@id":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/#articleImage","width":1252,"height":414},"datePublished":"2021-07-11T06:20:37+00:00","dateModified":"2021-08-18T08:21:25+00:00","inLanguage":"ru-RU","mainEntityOfPage":{"@id":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/#webpage"},"isPartOf":{"@id":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/#webpage"},"articleSection":"iOS 14, Lecture, Stanford CS 193P iOS 14, Swift 5, SwiftUI, iOS 14, Lecture 4, Stanford CS193P Spring 2021, Swift 5.4, SwiftUI"},{"@type":"BreadcrumbList","@id":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/#breadcrumblist","itemListElement":[{"@type":"ListItem","@id":"https:\/\/bestkora.com\/IosDeveloper#listItem","position":1,"name":"Home","item":"https:\/\/bestkora.com\/IosDeveloper","nextItem":{"@type":"ListItem","@id":"https:\/\/bestkora.com\/IosDeveloper\/category\/lecture\/#listItem","name":"Lecture"}},{"@type":"ListItem","@id":"https:\/\/bestkora.com\/IosDeveloper\/category\/lecture\/#listItem","position":2,"name":"Lecture","item":"https:\/\/bestkora.com\/IosDeveloper\/category\/lecture\/","nextItem":{"@type":"ListItem","@id":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/#listItem","name":"\u041b\u0435\u043a\u0446\u0438\u044f 4. \u0411\u043e\u043b\u044c\u0448\u0435 \u043e MVVM enum Optional.  CS193P Spring 2021."},"previousItem":{"@type":"ListItem","@id":"https:\/\/bestkora.com\/IosDeveloper#listItem","name":"Home"}},{"@type":"ListItem","@id":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/#listItem","position":3,"name":"\u041b\u0435\u043a\u0446\u0438\u044f 4. \u0411\u043e\u043b\u044c\u0448\u0435 \u043e MVVM enum Optional.  CS193P Spring 2021.","previousItem":{"@type":"ListItem","@id":"https:\/\/bestkora.com\/IosDeveloper\/category\/lecture\/#listItem","name":"Lecture"}}]},{"@type":"Person","@id":"https:\/\/bestkora.com\/IosDeveloper\/#person","name":"tatiana.kornilova@gmail.com","image":{"@type":"ImageObject","@id":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/#personImage","url":"https:\/\/secure.gravatar.com\/avatar\/33ccc19059014d8a7849c3621afa2b66a5f3e50ac7291c91c30ff35df5747628?s=96&d=mm&r=g","width":96,"height":96,"caption":"tatiana.kornilova@gmail.com"}},{"@type":"Person","@id":"https:\/\/bestkora.com\/IosDeveloper\/author\/tatiana-lornilovagmail-com\/#author","url":"https:\/\/bestkora.com\/IosDeveloper\/author\/tatiana-lornilovagmail-com\/","name":"tatiana.kornilova@gmail.com","image":{"@type":"ImageObject","@id":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/#authorImage","url":"https:\/\/secure.gravatar.com\/avatar\/33ccc19059014d8a7849c3621afa2b66a5f3e50ac7291c91c30ff35df5747628?s=96&d=mm&r=g","width":96,"height":96,"caption":"tatiana.kornilova@gmail.com"}},{"@type":"WebPage","@id":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/#webpage","url":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/","name":"\u041b\u0435\u043a\u0446\u0438\u044f 4. \u0411\u043e\u043b\u044c\u0448\u0435 \u043e MVVM enum Optional. CS193P Spring 2021. | \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.","description":"\u0420\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u0442\u0441\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0430 MVVM \u0432\u043e \u0432\u0441\u0435\u0439 \u0441\u0432\u043e\u0435\u0439 \u0440\u0435\u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0439 \u043c\u043e\u0449\u0438. \u0420\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0435 \u0422\u0418\u041f\u044b Swift: \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0435 enum \u0438 Optional.","inLanguage":"ru-RU","isPartOf":{"@id":"https:\/\/bestkora.com\/IosDeveloper\/#website"},"breadcrumb":{"@id":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/#breadcrumblist"},"author":{"@id":"https:\/\/bestkora.com\/IosDeveloper\/author\/tatiana-lornilovagmail-com\/#author"},"creator":{"@id":"https:\/\/bestkora.com\/IosDeveloper\/author\/tatiana-lornilovagmail-com\/#author"},"datePublished":"2021-07-11T06:20:37+00:00","dateModified":"2021-08-18T08:21:25+00:00"},{"@type":"WebSite","@id":"https:\/\/bestkora.com\/IosDeveloper\/#website","url":"https:\/\/bestkora.com\/IosDeveloper\/","name":"\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.","description":"\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 \" \u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 iOS \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439\" 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.","inLanguage":"ru-RU","publisher":{"@id":"https:\/\/bestkora.com\/IosDeveloper\/#person"}}]},"og:locale":"ru_RU","og:site_name":"\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.","og:type":"article","og:title":"\u041b\u0435\u043a\u0446\u0438\u044f 4. \u0411\u043e\u043b\u044c\u0448\u0435 \u043e MVVM enum Optional. CS193P Spring 2021. | \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.","og:description":"\u0420\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u0442\u0441\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0430 MVVM \u0432\u043e \u0432\u0441\u0435\u0439 \u0441\u0432\u043e\u0435\u0439 \u0440\u0435\u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0439 \u043c\u043e\u0449\u0438. \u0420\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0435 \u0422\u0418\u041f\u044b Swift: \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0435 enum \u0438 Optional.","og:url":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/","article:published_time":"2021-07-11T06:20:37+00:00","article:modified_time":"2021-08-18T08:21:25+00:00","twitter:card":"summary","twitter:title":"\u041b\u0435\u043a\u0446\u0438\u044f 4. \u0411\u043e\u043b\u044c\u0448\u0435 \u043e MVVM enum Optional. CS193P Spring 2021. | \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.","twitter:description":"\u0420\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u0442\u0441\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0430 MVVM \u0432\u043e \u0432\u0441\u0435\u0439 \u0441\u0432\u043e\u0435\u0439 \u0440\u0435\u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0439 \u043c\u043e\u0449\u0438. \u0420\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0435 \u0422\u0418\u041f\u044b Swift: \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0435 enum \u0438 Optional."},"aioseo_meta_data":{"post_id":"14180","title":null,"description":"#post_excerpt_only \u0420\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u0442\u0441\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u0430 MVVM \u0432\u043e \u0432\u0441\u0435\u0439 \u0441\u0432\u043e\u0435\u0439 \u0440\u0435\u0430\u043a\u0442\u0438\u0432\u043d\u043e\u0439 \u043c\u043e\u0449\u0438. \u0420\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u044e\u0442\u0441\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u0435 \u0422\u0418\u041f\u044b Swift: \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0435 enum \u0438 Optional.&nbsp;","keywords":[{"label":"CS193P","value":"CS193P"},{"label":"Stanford CS193P","value":"Stanford CS193P"},{"label":"CS193P Spring 2021","value":"CS193P Spring 2021"},{"label":"SwiftUI","value":"SwiftUI"},{"label":"Swift","value":"Swift"},{"label":"MVVM","value":"MVVM"},{"label":"ViewModel","value":"ViewModel"},{"label":" \u0421\u0442\u044d\u043d\u0444\u043e\u0440\u0434\u0441\u043a\u0438\u0439 \u043a\u0443\u0440\u0441 CS193P \u0412\u0435\u0441\u043d\u0430 2021","value":" \u0421\u0442\u044d\u043d\u0444\u043e\u0440\u0434\u0441\u043a\u0438\u0439 \u043a\u0443\u0440\u0441 CS193P \u0412\u0435\u0441\u043d\u0430 2021"},{"label":"iOS 14","value":"iOS 14"},{"label":"\u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 iOS \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439","value":"\u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 iOS \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439"},{"label":"Model-View-ViewModel","value":"Model-View-ViewModel"},{"label":"declarative programming","value":"declarative programming"},{"label":"enum","value":"enum"},{"label":"Optional","value":"Optional"},{"label":"\u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f","value":"\u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f"},{"label":"Unwrapped Optional","value":"Unwrapped Optional"},{"label":"ObservableObject","value":"ObservableObject"},{"label":"@Published","value":"@Published"},{"label":"objectWillChange","value":"objectWillChange"},{"label":"@ObservedObject","value":"@ObservedObject"}],"keyphrases":{"focus":[],"additional":[]},"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":"","og_custom_url":null,"og_article_section":null,"og_article_tags":[],"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":{"id":"aioseo-article-63a58f0ce3a5f","slug":"article","graphName":"Article","label":"\u0421\u0442\u0430\u0442\u044c\u044f","properties":{"type":"BlogPosting","name":"#post_title","headline":"#post_title","description":"#post_excerpt","image":"","keywords":"","author":{"name":"#author_name","url":"#author_url"},"dates":{"include":true,"datePublished":"","dateModified":""}}},"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"Article","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":"{\"article\":{\"articleType\":\"BlogPosting\"},\"course\":{\"name\":\"\",\"description\":\"\",\"provider\":\"\"},\"faq\":{\"pages\":[]},\"product\":{\"reviews\":[]},\"recipe\":{\"ingredients\":[],\"instructions\":[],\"keywords\":[]},\"software\":{\"reviews\":[],\"operatingSystems\":[]},\"webPage\":{\"webPageType\":\"WebPage\"}}","pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":"-1","robots_max_videopreview":"-1","robots_max_imagepreview":"large","priority":null,"frequency":"default","local_seo":{"locations":{"business":{"name":"","businessType":"","image":"","areaServed":"","urls":{"website":"","aboutPage":"","contactPage":""},"address":{"streetLine1":"","streetLine2":"","zipCode":"","city":"","state":"","country":"","addressFormat":"#streetLineOne\n#streetLineTwo\n#city, #state #zipCode"},"contact":{"email":"","phone":"","phoneFormatted":"","fax":"","faxFormatted":""},"ids":{"vat":"","tax":"","chamberOfCommerce":""},"payment":{"priceRange":"","currenciesAccepted":"","methods":""}}},"openingHours":{"useDefaults":true,"show":true,"alwaysOpen":false,"use24hFormat":false,"timezone":"","labels":{"closed":"","alwaysOpen":""},"days":{"monday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"},"tuesday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"},"wednesday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"},"thursday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"},"friday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"},"saturday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"},"sunday":{"open24h":false,"closed":false,"openTime":"09:00","closeTime":"17:00"}}}},"breadcrumb_settings":null,"limit_modified_date":false,"ai":null,"created":"2021-07-11 06:19:22","updated":"2026-02-22 20:07:50","seo_analyzer_scan_date":null},"aioseo_breadcrumb":"<div class=\"aioseo-breadcrumbs\"><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/bestkora.com\/IosDeveloper\" title=\"Home\">Home<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t<a href=\"https:\/\/bestkora.com\/IosDeveloper\/category\/lecture\/\" title=\"Lecture\">Lecture<\/a>\n\t\t<\/span><span class=\"aioseo-breadcrumb-separator\">&raquo;<\/span><span class=\"aioseo-breadcrumb\">\n\t\t\t\u041b\u0435\u043a\u0446\u0438\u044f 4. \u0411\u043e\u043b\u044c\u0448\u0435 \u043e MVVM enum Optional.  CS193P Spring 2021.\n\t\t<\/span><\/div>","aioseo_breadcrumb_json":[{"label":"Home","link":"https:\/\/bestkora.com\/IosDeveloper"},{"label":"Lecture","link":"https:\/\/bestkora.com\/IosDeveloper\/category\/lecture\/"},{"label":"\u041b\u0435\u043a\u0446\u0438\u044f 4. \u0411\u043e\u043b\u044c\u0448\u0435 \u043e MVVM enum Optional.  CS193P Spring 2021.","link":"https:\/\/bestkora.com\/IosDeveloper\/lektsiya-4-bolshe-o-mvvm-enum-optional-cs193p-spring-2021\/"}],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/bestkora.com\/IosDeveloper\/wp-json\/wp\/v2\/posts\/14180","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/bestkora.com\/IosDeveloper\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bestkora.com\/IosDeveloper\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bestkora.com\/IosDeveloper\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bestkora.com\/IosDeveloper\/wp-json\/wp\/v2\/comments?post=14180"}],"version-history":[{"count":4,"href":"https:\/\/bestkora.com\/IosDeveloper\/wp-json\/wp\/v2\/posts\/14180\/revisions"}],"predecessor-version":[{"id":14208,"href":"https:\/\/bestkora.com\/IosDeveloper\/wp-json\/wp\/v2\/posts\/14180\/revisions\/14208"}],"wp:attachment":[{"href":"https:\/\/bestkora.com\/IosDeveloper\/wp-json\/wp\/v2\/media?parent=14180"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bestkora.com\/IosDeveloper\/wp-json\/wp\/v2\/categories?post=14180"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bestkora.com\/IosDeveloper\/wp-json\/wp\/v2\/tags?post=14180"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}