{"id":7174,"date":"2023-08-13T20:16:09","date_gmt":"2023-08-13T20:16:09","guid":{"rendered":"https:\/\/otus.ru\/journal\/?p=7174"},"modified":"2023-08-15T21:18:33","modified_gmt":"2023-08-15T21:18:33","slug":"uslovnye-operatory-ruby","status":"publish","type":"post","link":"https:\/\/otus.ru\/journal\/uslovnye-operatory-ruby\/","title":{"rendered":"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b Ruby"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">\u0412 Ruby \u0438\u043c\u0435\u044e\u0442\u0441\u044f \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0432\u0441\u0442\u0440\u0435\u0447\u0430\u044e\u0442\u0441\u044f \u0442\u0430\u043a\u0436\u0435 \u0438 \u0432 \u0434\u0440\u0443\u0433\u0438\u0445 \u044f\u0437\u044b\u043a\u0430\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. \u0422\u0438\u043f\u0438\u0447\u043d\u044b\u043c \u043f\u0440\u0438\u043c\u0435\u0440\u043e\u043c \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435. \u0414\u0430\u043b\u0435\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u043e\u0438\u0442 \u043f\u043e\u0437\u043d\u0430\u043a\u043e\u043c\u0438\u0442\u044c\u0441\u044f \u0441 if-\u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u043c\u0438 \u0432 Ruby. \u0414\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0431\u0443\u0434\u0443\u0442 \u0438\u0437\u0443\u0447\u0435\u043d\u044b \u0442\u0435\u0440\u043d\u0430\u0440\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u0430\u044f \u043d\u0438\u0436\u0435, \u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u043d\u0430 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0441\u0442\u043e\u0432, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0430\u0447\u0438\u043d\u0430\u044e\u0442 \u0437\u043d\u0430\u043a\u043e\u043c\u0438\u0442\u044c\u0441\u044f \u0441 Ruby.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u041e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0439 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 \u2013 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0430\u0431\u043e\u0440 \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0439 (\u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u043e\u0432), \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0431\u0443\u0434\u0435\u0442 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u044b\u0432\u0430\u0442\u044c\u0441\u044f \u0432 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 \u0438\u0441\u0442\u0438\u043d\u043d\u043e\u0441\u0442\u0438 \u0437\u0430\u0434\u0430\u043d\u043d\u043e\u0433\u043e \u0434\u043b\u044f \u0440\u0430\u0441\u0447\u0435\u0442\u043e\u0432 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f. \u041e\u0441\u043d\u043e\u0432\u0430 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0439 \u0441 if \u0438 \u0434\u0440\u0443\u0433\u0438\u043c\u0438 \u00ab\u043a\u043e\u043c\u0430\u043d\u0434\u0430\u043c\u0438\u00bb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b the if \u0438 switch \u044f\u0432\u043b\u044f\u044e\u0442\u0441\u044f \u0444\u0443\u043d\u0434\u0430\u043c\u0435\u043d\u0442\u043e\u043c \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f. \u041e\u043d\u0438 \u0443\u0441\u043f\u0435\u0448\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u0432 \u0440\u0430\u0437\u043b\u0438\u0447\u043d\u044b\u0445 \u044f\u0437\u044b\u043a\u0430\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f, \u0430 \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u0420\u0443\u0431\u0438.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435 \u2013 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f, \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f \u0445\u043e\u0434\u043e\u043c \u0440\u0430\u0431\u043e\u0442\u044b\/\u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0438\u043c\u0435\u044e\u0449\u0435\u0433\u043e\u0441\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f. \u0412 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 \u0442\u043e\u0433\u043e, \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u043e \u043b\u0438 \u0443\u0441\u043b\u043e\u0432\u0438\u0435 (the condition) \u0438\u043b\u0438 \u043d\u0435\u0442, \u0431\u0443\u0434\u0435\u0442 \u043c\u0435\u043d\u044f\u0442\u044c\u0441\u044f \u0434\u0430\u043b\u044c\u043d\u0435\u0439\u0448\u0438\u0439 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c (\u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0435 \u043a\u043e\u043d\u0442\u0435\u043d\u0442\u0430).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u041a\u043b\u0430\u0441\u0441\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The Ruby if (\u0438\u043b\u0438 \u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435) \u2013 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0432 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u043c\u043e\u043c \u044f\u0437\u044b\u043a\u0435 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0430 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u043c\u0438 \u0441\u043f\u043e\u0441\u043e\u0431\u0430\u043c\u0438. \u0410\u043d\u0430\u043b\u043e\u0433\u0438\u0447\u043d\u044b\u043c \u043e\u0431\u0440\u0430\u0437\u043e\u043c \u0441\u0438\u0442\u0443\u0430\u0446\u0438\u044f \u043e\u0431\u0441\u0442\u043e\u0438\u0442 \u0441 \u0438\u043d\u044b\u043c\u0438 \u0441\u0430\u043c\u044b\u043c\u0438 \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u044b\u043c\u0438 \u042f\u041f. \u0412 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u043d\u043e\u0439 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 if \u0431\u0443\u0434\u0435\u0442 \u043c\u0435\u043d\u044f\u0442\u044c\u0441\u044f \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u00ab\u0441\u043b\u043e\u0436\u043d\u043e\u0441\u0442\u044c\u00bb \u043a\u043e\u0434\u0430, \u043d\u043e \u0438 \u0435\u0433\u043e \u043d\u0435\u043f\u043e\u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0435 \u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u0435.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041d\u0430 \u0434\u0430\u043d\u043d\u044b\u0439 \u043c\u043e\u043c\u0435\u043d\u0442 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0430\u044f \u043a\u043b\u0430\u0441\u0441\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f the if \u0432 \u0420\u0443\u0431\u0438:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0441 \u043e\u0434\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u043e\u0439;<\/li>\n\n\n\n<li>\u0434\u0432\u043e\u0439\u043d\u043e\u0435 \u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435;<\/li>\n\n\n\n<li>\u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0435 \u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435;<\/li>\n\n\n\n<li>\u0442\u0435\u0440\u043d\u0430\u0440\u043d\u044b\u0439 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440;<\/li>\n\n\n\n<li>\u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435 \u0441 \u0432\u044b\u0431\u043e\u0440\u043e\u043c \u0443\u0441\u043b\u043e\u0432\u0438\u044f (switch-case).<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">\u0427\u0442\u043e\u0431\u044b \u043b\u0443\u0447\u0448\u0435 \u0440\u0430\u0437\u043e\u0431\u0440\u0430\u0442\u044c\u0441\u044f \u0441 \u0432\u044b\u0431\u043e\u0440\u043e\u043c \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u043e\u0432 \u0432 \u0438\u0441\u0445\u043e\u0434\u043d\u043e\u043c \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0438, \u043a\u0430\u0436\u0434\u044b\u0439 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 the if \u0432 Ruby \u0431\u0443\u0434\u0435\u0442 \u0438\u0437\u0443\u0447\u0435\u043d \u0431\u043e\u043b\u0435\u0435 \u043f\u043e\u0434\u0440\u043e\u0431\u043d\u043e.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u041e\u0434\u043d\u0430 \u0432\u0435\u0442\u043a\u0430<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u041e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 If \u2013 \u043f\u0440\u043e\u0441\u0442\u0435\u0439\u0448\u0438\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0432\u044b\u0431\u043e\u0440\u0430 \u0434\u0430\u043b\u044c\u043d\u0435\u0439\u0448\u0435\u0433\u043e \u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b. \u042d\u043b\u0435\u043c\u0435\u043d\u0442\u0430\u0440\u043d\u0430\u044f \u0443\u0441\u043b\u043e\u0432\u043d\u0430\u044f \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f. \u041e\u043d\u0430 \u0447\u0430\u0441\u0442\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0432 \u0446\u0438\u043a\u043b\u0430\u0445. \u0412\u0441\u0442\u0440\u0435\u0447\u0430\u0435\u0442\u0441\u044f \u043f\u043e\u0447\u0442\u0438 \u0432\u043e \u0432\u0441\u0435\u0445 \u044f\u0437\u044b\u043a\u0430\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0444\u043e\u0440\u043c\u0430 \u0437\u0430\u043f\u0438\u0441\u0438 \u0432\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u0442\u0430\u043a:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh5.googleusercontent.com\/377RDxzWOii2knsnza8rJvVybdLOXe4_Rda7EYLGGs_A5CKjYTR0fvmI0MNH0jnpZ4K7gAXOWn1oDHXQbsOxRh5-ItbAAc3zuH82u9fK1J0KhmYsXiPtZuhsrAqDvY6aiLt_0_ujdTPkia7he9ssBg\" alt=\"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b Ruby\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0417\u0434\u0435\u0441\u044c, \u0435\u0441\u043b\u0438 \u0443\u0441\u043b\u043e\u0432\u0438\u0435 \u043f\u043e\u0441\u043b\u0435 if \u2013 \u044d\u0442\u043e \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0438\u0441\u0442\u0438\u043d\u0430 (the true), \u0431\u0443\u0434\u0435\u0442 \u0432\u044b\u043f\u043e\u043b\u043d\u044f\u0442\u044c\u0441\u044f \u0431\u043b\u043e\u043a \u043a\u043e\u0434\u0430, \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0439 \u0434\u043e end. \u0412 \u043f\u0440\u043e\u0442\u0438\u0432\u043d\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u0444\u0440\u0430\u0433\u043c\u0435\u043d\u0442 \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u0430\u0435\u0442\u0441\u044f. \u0423\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043e\u0439 \u043f\u0435\u0440\u0435\u0445\u043e\u0434\u0438\u0442 \u043a \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u0443, \u0438\u0434\u0443\u0449\u0438\u043c \u043f\u043e\u0441\u043b\u0435 if \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0421\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u043d\u0438\u0435 \u0447\u0438\u0441\u0435\u043b<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412 \u0432\u0438\u0434\u0435 \u0443\u0441\u043b\u043e\u0432\u0438\u044f \u0432 the Ruby \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f, \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0435\u043c\u044b\u0435 \u043d\u0430 \u0438\u0441\u0442\u0438\u043d\u043d\u043e\u0441\u0442\u044c. \u0415\u0441\u043b\u0438 \u043e\u043d\u043e \u0431\u0443\u0434\u0435\u0442 the true, \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442 \u0437\u0430\u0434\u0430\u043d\u043d\u044b\u0439 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c. \u041a\u043e\u0433\u0434\u0430 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0440\u0430\u0432\u043d\u044f\u0435\u0442\u0441\u044f the false, \u0431\u043b\u043e\u043a \u0441 if \u043f\u0440\u043e\u0441\u0442\u043e \u043f\u0440\u043e\u043f\u0443\u0441\u043a\u0430\u0435\u0442\u0441\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u043e\u0439. \u0421\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0438\u043c\u0435\u044e\u0442 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0435 \u043d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u2013 \u0431\u0443\u043b\u0435\u0432\u044b\u0439 \u0442\u0438\u043f \u0434\u0430\u043d\u043d\u044b\u0445.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0414\u043b\u044f \u0442\u043e\u0433\u043e, \u0447\u0442\u043e\u0431\u044b \u0437\u0430\u043f\u0438\u0441\u044b\u0432\u0430\u0442\u044c \u0443\u0441\u043b\u043e\u0432\u0438\u044f, \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u0447\u0438\u0441\u043b\u0430;<\/li>\n\n\n\n<li>\u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044f.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh5.googleusercontent.com\/-hQB0svWeYjaE6EMm2dMNxUAqYxpiK1DwX9ZBbWyhxF-n33ZEjtdPYM7pFNFD5eXRYr4y4I5xlRqgBwrmPbQCBvp82Q0ZpGRDGAfvq1yBxEVUNA1cQ9PQ8LuTrSrSYIKbuPjPpy0NuWUd94ZdphthQ\" alt=\"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b Ruby\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u044b\u0448\u0435 \u2013 \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u0440 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 if \u043a\u043e\u043c\u0430\u043d\u0434\u044b \u0434\u043b\u044f \u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u044f \u0432 \u0420\u0443\u0431\u0438. \u0415\u0441\u043b\u0438 \u0432 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439 age \u0431\u0443\u0434\u0435\u0442 \u0447\u0438\u0441\u043b\u043e, \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u0431\u043e\u043b\u044c\u0448\u0435 \u0438\u043b\u0438 \u0440\u0430\u0432\u043d\u043e 18, \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0430 \u0441\u043e\u043e\u0431\u0449\u0438\u0442 \u00ab\u0412\u0430\u043c \u0443\u0436\u0435 \u0432\u0441\u0435 \u043c\u043e\u0436\u043d\u043e\u00bb. \u0412 \u043f\u0440\u043e\u0442\u0438\u0432\u043d\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u2013 \u00ab\u0412\u0430\u043c \u0435\u0449\u0435 \u043f\u043e\u043a\u0430 \u0440\u0430\u043d\u043e\u0432\u0430\u0442\u043e!\u00bb.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u0421\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u0435 \u0441\u0442\u0440\u043e\u043a<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u0442\u044c the Ruby \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u0446\u0438\u0444\u0440\u044b, \u043d\u043e \u0438 \u0441\u0442\u0440\u043e\u043a\u0438. \u0414\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 \u00ab\u0440\u0430\u0432\u043d\u043e-\u0440\u0430\u0432\u043d\u043e\u00bb. \u041e\u043d \u0431\u0443\u0434\u0435\u0442 \u0441\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u0442\u044c \u0441\u0442\u0440\u043e\u043a\u0438\/\u0447\u0438\u0441\u043b\u0430 \u0441\u043f\u0440\u0430\u0432\u0430 \u0438 \u0441\u043b\u0435\u0432\u0430 \u043e\u0442 \u0441\u0435\u0431\u044f. \u0415\u0441\u043b\u0438 \u043e\u043d\u0438 \u0440\u0430\u0432\u043d\u044b \u043c\u0435\u0436\u0434\u0443 \u0441\u043e\u0431\u043e\u0439, \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u043c \u0441\u0442\u0430\u043d\u0435\u0442 \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0438\u0441\u0442\u0438\u043d\u0430. \u0412 \u043f\u0440\u043e\u0442\u0438\u0432\u043d\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u2013 the false.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh5.googleusercontent.com\/lyngjy2i65vQHfYbAc-gayg_3cGIQSoJn3LXYJrRSXPn7Ny8z_LIhQ3GAySuqw9o30OZSU3SbSymojCZ8AwfPfVkjiroWQtFLuP7Iwa1CCb-ma9CtDwGxnwoiWj2RGQmWR-zDwrs-l44on2IcJKOiQ\" alt=\"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b Ruby\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u043e\u0442 \u2013 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 if \u0432 \u0441\u043b\u0443\u0447\u0430\u0435 \u0441\u043e \u0441\u0442\u0440\u043e\u043a\u0430\u043c\u0438. \u041f\u0435\u0440\u0435\u0431\u0440\u0430\u0442\u044c \u0432\u0441\u0435 \u0438\u0445 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u044b \u043d\u0435 \u0432\u0441\u0435\u0433\u0434\u0430 \u0443\u0434\u0430\u0435\u0442\u0441\u044f, \u043f\u043e\u044d\u0442\u043e\u043c\u0443 \u0434\u043b\u044f \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 \u00ab\u043d\u0435 \u0440\u0430\u0432\u043d\u043e\u00bb (\u00ab!\u00bb). \u041e\u043d \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u0442 true, \u0435\u0441\u043b\u0438 \u043e\u043f\u0435\u0440\u0430\u043d\u0434\u044b \u043d\u0435 \u0440\u0430\u0432\u043d\u044f\u044e\u0442\u0441\u044f \u0434\u0440\u0443\u0433 \u0434\u0440\u0443\u0433\u0443.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0414\u0432\u0435 \u0432\u0435\u0442\u043a\u0438<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0411\u043e\u043b\u0435\u0435 \u0441\u043b\u043e\u0436\u043d\u044b\u043c \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u043e\u043c \u0432 Ruby \u0432\u044b\u0441\u0442\u0443\u043f\u0430\u0435\u0442 if \u2026 else. \u042d\u0442\u043e \u00ab\u0434\u0432\u043e\u0439\u043d\u043e\u0435\u00bb \u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435. \u041e\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442\u0441\u044f \u0442\u043e\u0433\u0434\u0430, \u043a\u043e\u0433\u0434\u0430 \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043a\u043e\u0434 \u043f\u0440\u0438 \u0443\u0441\u043b\u043e\u0432\u0438\u0438 \u043d\u0435\u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0437\u0430\u0434\u0430\u043d\u043d\u043e\u0433\u043e \u0438\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e \u00ab\u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u00bb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0424\u043e\u0440\u043c\u0430 \u0437\u0430\u043f\u0438\u0441\u0438:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh4.googleusercontent.com\/wtDYCVzAU2w6Pqp8ia_suy_xghedcd2SnwtrD-mah2lADRJDav-P_aaBJHflkPoSY0SURrEPG7Ndm9eeLtddCIQ-U7NniX6L4biG6MlsM-nqAbiZ9MmoGnoB8_pGF1lFuAhrtYXRLdwXRkJ6Cw6zSA\" alt=\"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b Ruby\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0421\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0430\u044f \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f \u0432\u043a\u043b\u044e\u0447\u0430\u0435\u0442 \u0432 \u0441\u0435\u0431\u044f:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u043a\u043b\u044e\u0447\u0435\u0432\u043e\u0435 \u0441\u043b\u043e\u0432\u043e if;<\/li>\n\n\n\n<li>\u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435, \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u0431\u0443\u0434\u0435\u0442 \u0440\u0430\u0441\u0441\u0447\u0438\u0442\u044b\u0432\u0430\u0442\u044c\u0441\u044f \u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0442\u044c\u0441\u044f \u043d\u0430 \u0444\u0430\u043a\u0442 \u0438\u0441\u0442\u0438\u043d\u044b;<\/li>\n\n\n\n<li>\u0431\u043b\u043e\u043a \u043a\u043e\u0434\u0430, \u0440\u0435\u0430\u043b\u0438\u0437\u0443\u0435\u043c\u044b\u0439 \u043f\u0440\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0438, \u0440\u0430\u0432\u043d\u043e\u043c true;<\/li>\n\n\n\n<li>\u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0430\u0447\u0438\u043d\u0430\u0435\u0442 \u0440\u0430\u0431\u043e\u0442\u0430\u0442\u044c \u043f\u0440\u0438 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u0435 \u0440\u0430\u0441\u0447\u0435\u0442\u043e\u0432 \u00ab\u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u043b\u043e\u0436\u044c\u00bb.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh5.googleusercontent.com\/VVdbwDJ140Ez8Wv9gpbh2naI7EuBXupi4VCLzNIHjLMfLvYr64xayzRLkD6o4hcmvsU0kDl0uAYHEd_PJdN2tBpQ3kOVO1mgBkgev_ceYdyX_Bv_6VvoUgFihXFAu7YYTyYqKLLMQSV_jUaOuYZzVg\" alt=\"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b Ruby\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u044b\u0448\u0435 \u043c\u043e\u0436\u043d\u043e \u0443\u0432\u0438\u0434\u0435\u0442\u044c \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u0440 \u0434\u0432\u043e\u0439\u043d\u043e\u0433\u043e \u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u044f. \u0421\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u0434\u043b\u044f \u0431\u043e\u043b\u0435\u0435 \u0441\u043b\u043e\u0436\u043d\u044b\u0445 \u0437\u0430\u0434\u0430\u0447, \u043d\u0435\u0436\u0435\u043b\u0438 \u043f\u0440\u043e\u0441\u0442\u043e if.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u041c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0435 \u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u041d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u0440\u0435\u0434\u043f\u043e\u0447\u0438\u0442\u0430\u044e\u0442 \u00ab\u0441\u0432\u043e\u0431\u043e\u0434\u0443 \u0432\u044b\u0431\u043e\u0440\u0430\u00bb \u0432 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u0445. \u041e\u043d\u0438 \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u044e\u0442 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u043e \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u043e\u0432 \u043f\u043e\u0432\u0435\u0434\u0435\u043d\u0438\u044f \u043a\u043e\u043d\u0442\u0435\u043d\u0442\u0430 \u0432 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 \u0437\u0430\u0434\u0430\u043d\u043d\u043e\u0433\u043e \u0443\u0441\u043b\u043e\u0432\u0438\u044f. \u0420\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044f \u0432 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u043c \u043a\u043e\u0434\u0435 \u043e\u0441\u0443\u0449\u0435\u0441\u0442\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0447\u0435\u0440\u0435\u0437 \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0435 \u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u043e\u0431\u0449\u0430\u044f \u0441\u0438\u043d\u0442\u0430\u043a\u0441\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0444\u043e\u0440\u043c\u0430 \u0442\u0430\u043a:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh4.googleusercontent.com\/WrrpROt5gPAVrt3oo_y7XmXBo_ARK34YU8YxrNQRp69DYGVphyx57p5CVWckCug74h03g_E8ZKaomLGraEAl1cLTlTI5UMtzu9SFa0JI10Jwav-1KUAKCt2SqvZEOhLIBhZV7R_odZHoxiw0OynLiQ\" alt=\"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b Ruby\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0417\u0434\u0435\u0441\u044c the Ruby \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 elsif. \u0421\u0438\u0441\u0442\u0435\u043c\u0430 \u0441\u043d\u0430\u0447\u0430\u043b\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u0435\u0434\u0435\u0442 \u0440\u0430\u0441\u0447\u0435\u0442\u044b condition1 \u0438 \u0441\u0440\u0430\u0432\u043d\u0438\u0442 \u0435\u0433\u043e \u0441 \u0437\u0430\u0434\u0430\u043d\u043d\u044b\u043c \u0443\u0441\u043b\u043e\u0432\u0438\u0435\u043c. \u0415\u0441\u043b\u0438 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u2013 \u043b\u043e\u0436\u044c, \u043f\u0440\u043e\u0438\u0437\u043e\u0439\u0434\u0435\u0442 \u043f\u0435\u0440\u0435\u0445\u043e\u0434 \u043a \u043f\u0435\u0440\u0432\u043e\u043c\u0443 \u0431\u043b\u043e\u043a\u0443 elsif, \u0437\u0430\u0442\u0435\u043c \u2013 \u043a\u043e \u0432\u0442\u043e\u0440\u043e\u043c\u0443 \u0438 \u0442\u0430\u043a \u0434\u0430\u043b\u0435\u0435. \u041f\u0440\u043e\u0438\u0441\u0445\u043e\u0434\u0438\u0442 \u044d\u0442\u043e \u0434\u043e \u0442\u0435\u0445 \u043f\u043e\u0440, \u043f\u043e\u043a\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u043d\u0435 \u043e\u0431\u043d\u0430\u0440\u0443\u0436\u0438\u0442 \u043b\u043e\u0433\u0438\u0447\u0435\u0441\u043a\u0443\u044e \u0438\u0441\u0442\u0438\u043d\u0443. \u041f\u0440\u0438 \u0435\u0435 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0438 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u0431\u043b\u043e\u043a, \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u044b\u0439 \u043f\u043e\u0441\u043b\u0435 else.<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh6.googleusercontent.com\/j4owjhGC2bauX5Juj7-RVO3kH3o-px1aOYfTQ1v3Nrwrw2uUJ2Vp_TfQyIRgUBy6v-rpIt9iJtJbsas3fyvlzgKIv2OvlNqlXSANxn_4wISRQ0k-eU9zTotR2rDiMsMBjPWvaadk0NrZ9zclv8XXBw\" alt=\"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b Ruby\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u043e\u0442 \u0442\u0430\u043a \u043c\u043e\u0436\u0435\u0442 \u0432\u044b\u0433\u043b\u044f\u0434\u0435\u0442\u044c \u043c\u043d\u043e\u0436\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e\u0435 \u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435. \u041e\u043d\u043e \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0434\u043e\u0441\u0442\u0430\u0442\u043e\u0447\u043d\u043e \u0441\u043b\u043e\u0436\u043d\u044b\u0435 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u044b \u0441 \u0432\u044b\u0431\u043e\u0440\u043e\u043c.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u0422\u0435\u0440\u043d\u0430\u0440\u043d\u044b\u0439 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u0422\u0435\u0440\u043d\u0430\u0440\u043d\u044b\u0439 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 \u0432 \u0440\u0430\u0441\u0441\u043c\u0430\u0442\u0440\u0438\u0432\u0430\u0435\u043c\u043e\u043c \u044f\u0437\u044b\u043a\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u2013 \u044d\u0442\u043e \u0441\u043e\u043a\u0440\u0430\u0449\u0435\u043d\u043d\u0430\u044f \u0432\u0430\u0440\u0438\u0430\u0446\u0438\u044f \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 \u0441 if. \u0421\u043d\u0430\u0447\u0430\u043b\u0430 \u043e\u043d \u043e\u0446\u0435\u043d\u0438\u0432\u0430\u0435\u0442 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0435 (\u0438\u0441\u0442\u0438\u043d\u0430\/\u043b\u043e\u0436\u044c), \u0430 \u0437\u0430\u0442\u0435\u043c \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u044b\u0432\u0430\u0435\u0442 \u043e\u0434\u043d\u043e \u0438\u0437 \u0438\u043c\u0435\u044e\u0449\u0438\u0445\u0441\u044f \u0443\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0438\u0439.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0423 \u0442\u0435\u0440\u043d\u0430\u0440\u043d\u043e\u0433\u043e \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u0430, \u0437\u0430\u043c\u0435\u043d\u044f\u044e\u0449\u0435\u0433\u043e \u043a\u043e\u0440\u043e\u0442\u043a\u0443\u044e \u0437\u0430\u043f\u0438\u0441\u044c the if else Ruby, \u0431\u0443\u0434\u0435\u0442 \u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0430\u044f \u0444\u043e\u0440\u043c\u0430 \u0437\u0430\u043f\u0438\u0441\u0438:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh5.googleusercontent.com\/jT-tiSrYRQxyjfLFpptKelf7rEQ4qi5CNnYLoLADTyYnCU3w3qAzTFHZE0S4lEBYBt-9ZZXjI4qs7aJn4tSgH5-yKZIeZewoMYwigNdaabRLmScV3whbSsZK0TUuCvciB_l5gK61ZJCsXR5Xgk_bmQ\" alt=\"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b Ruby\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh4.googleusercontent.com\/0yBj-DgTgRi-NHrkjKud3zv97eMUx9DSB61HUAGpgveB9lWJm8FwOlD1yQClTtfcBu-8c1NU1gYb13QeIYmK54BLd4O3x41a1aLDC2yoj2fs-8spz5RCSI3UF8ke5mgnElmy5yt_dc0fKHrIF4baJg\" alt=\"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b Ruby\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u044b\u0448\u0435 \u043c\u043e\u0436\u043d\u043e \u0443\u0432\u0438\u0434\u0435\u0442\u044c \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043e\u0431\u0449\u0443\u044e \u0444\u043e\u0440\u043c\u0443 \u0438\u043d\u0442\u0435\u0440\u043f\u0440\u0435\u0442\u0430\u0446\u0438\u0438, \u043d\u043e \u0438 \u043d\u0430\u0433\u043b\u044f\u0434\u043d\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u0440 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0443\u043f\u043e\u043c\u044f\u043d\u0443\u0442\u043e\u0439 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438. \u041d\u0438\u043a\u0430\u043a\u0438\u0445 \u0434\u0440\u0443\u0433\u0438\u0445 \u0444\u0443\u043d\u043a\u0446\u0438\u0439, \u043a\u0440\u043e\u043c\u0435 \u043a\u0430\u043a \u0441\u043e\u043a\u0440\u0430\u0449\u0435\u043d\u0438\u0435 the if \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439 \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u0437\u0430\u043f\u0438\u0441\u0438 \u043d\u0435 \u043d\u0435\u0441\u0443\u0442.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u041e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 case<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Case-\u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f \u0432 the Ruby \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u044e\u0442\u0441\u044f \u0434\u043b\u044f \u0442\u043e\u0433\u043e, \u0447\u0442\u043e\u0431\u044b \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u0438\u0442\u044c \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044e \u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0430\u043c \u0432\u044b\u0431\u043e\u0440 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u0430 \u0432 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 \u0442\u043e\u0433\u043e \u0438\u043b\u0438 \u0438\u043d\u043e\u0433\u043e \u0443\u0441\u043b\u043e\u0432\u0438\u044f. \u0411\u0430\u0437\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u043f\u0440\u0438\u0435\u043c \u043d\u0430 \u043f\u043e\u043b\u043d\u043e\u043c \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u0438 \u00ab\u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u00bb.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u041e\u0431\u0449\u0430\u044f \u0444\u043e\u0440\u043c\u0430 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u044f case (\u0432 \u0431\u043e\u043b\u044c\u0448\u0438\u043d\u0441\u0442\u0432\u0435 \u0434\u0440\u0443\u0433\u0438\u0445 \u044f\u0437\u044b\u043a\u043e\u0432 \u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044f \u043d\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f switch \u0438\u043b\u0438 switch-case) \u0432\u044b\u0433\u043b\u044f\u0434\u0438\u0442 \u0442\u0430\u043a:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh3.googleusercontent.com\/EYntKa1wLrf_CAnQj5H0nDn3jZnDp51ybvw5YYRogA-SB_r2PegQd2Rw9bS8yvkCUfNazDC9Kavd5aJr97Dl7SM51GGKwpWQRSvN_R62jZk1cm1frGEN8wxRdrhJgvOSV3m3oymoYmrzmToWXHvtQg\" alt=\"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b Ruby\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0427\u0430\u0441\u0442\u044c else \u0432 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u043e\u0439 \u0437\u0430\u043f\u0438\u0441\u0438 \u043c\u043e\u0436\u0435\u0442 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u043e\u0432\u0430\u0442\u044c. \u042d\u0442\u043e\u0442 \u044d\u043b\u0435\u043c\u0435\u043d\u0442 \u043e\u0442\u0432\u0435\u0447\u0430\u0435\u0442 \u0437\u0430 \u0432\u044b\u0431\u043e\u0440 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0431\u0443\u0434\u0435\u0442 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d, \u0435\u0441\u043b\u0438 \u043d\u0438 \u043e\u0434\u043d\u043e case-where \u043d\u0435 \u0438\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043e \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0438\u0441\u0442\u0438\u043d\u044b.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u0412\u043e\u0442 \u043f\u0440\u0438\u043c\u0435\u0440, \u0432 \u043a\u043e\u0442\u043e\u0440\u043e\u043c \u0441\u0438\u0441\u0442\u0435\u043c\u0430 \u0432\u044b\u0432\u0435\u0434\u0435\u0442 \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044e \u043e\u0431 \u043e\u0446\u0435\u043d\u043a\u0435 \u0443\u0447\u0435\u043d\u0438\u043a\u0430:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh5.googleusercontent.com\/BdN2XEp0Ups2BVGXdSDBfKcq9yoATaf0vuDQv1xMB5YkgcSoAuoRF0Ue3IVmpkKbE4mTQafmdzrGuGt6F9IawioBul43jb8tu6847jfigch5keWpK_3kjHhD2QMgNiddQsyHIm-307aYLjrU3sHCSQ\" alt=\"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b Ruby\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u0411\u0435\u0437 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f case-\u0431\u043b\u043e\u043a\u0430 \u043c\u043e\u0436\u043d\u043e \u043f\u0435\u0440\u0435\u043f\u0438\u0441\u0430\u0442\u044c \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0435\u043d\u043d\u044b\u0439 \u043a\u043e\u0434 \u0441 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435\u043c the if:<\/p>\n\n\n\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh3.googleusercontent.com\/k3EDIGHOjTpi1CbC6i3ZN57DJM-TF7Yd-Khvkrbm1la3N7iSvdexDEDMboU9g9Vt-CWF252kIfZrBX0kkfRzr08hldHriGi1VXHPJDiTw5VzB9nKcFxotCXtwjuQKUM9EPrjGKyMByGA8PShrP7cww\" alt=\"\u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b Ruby\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">\u041c\u043e\u0436\u043d\u043e \u0437\u0430\u043c\u0435\u0442\u0438\u0442\u044c, \u0447\u0442\u043e \u0438\u0441\u0445\u043e\u0434\u043d\u044b\u0439 \u043a\u043e\u0434 \u0441 case \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0431\u043e\u043b\u0435\u0435 \u043a\u043e\u043c\u043f\u0430\u043a\u0442\u043d\u044b\u043c, \u043b\u0430\u043a\u043e\u043d\u0438\u0447\u043d\u044b\u043c \u0438 \u0447\u0438\u0442\u0430\u0431\u0435\u043b\u044c\u043d\u044b\u043c.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">When \u043c\u043e\u0436\u0435\u0442 \u0432\u043a\u043b\u044e\u0447\u0430\u0442\u044c \u0432 \u0441\u0435\u0431\u044f \u043d\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u043d\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435, \u043d\u043e \u0438 \u0438\u0445 \u0434\u0438\u0430\u043f\u0430\u0437\u043e\u043d. \u0421\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0435 \u00ab\u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440\u044b\u00bb \u043f\u0438\u0448\u0443\u0442\u0441\u044f \u0432 \u043a\u0440\u0443\u0433\u043b\u044b\u0445 \u0441\u043a\u043e\u0431\u043a\u0430\u0445.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>\u0418\u043d\u0442\u0435\u0440\u0435\u0441\u0443\u0435\u0442 Ruby-\u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430? \u041e\u0431\u0440\u0430\u0442\u0438\u0442\u0435 \u0432\u043d\u0438\u043c\u0430\u043d\u0438\u0435 \u043d\u0430 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0439 \u043a\u0443\u0440\u0441 \u0432 Otus \u00ab<a href=\"https:\/\/otus.ru\/lessons\/ruby\/?utm_source=oj&amp;utm_medium=affilate&amp;utm_campaign=ruby\" title=\"\">Ruby \u0438 Ruby on Rails Developer<\/a><\/em>\u00bb!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0412 Ruby \u0438\u043c\u0435\u044e\u0442\u0441\u044f \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0432\u0441\u0442\u0440\u0435\u0447\u0430\u044e\u0442\u0441\u044f \u0442\u0430\u043a\u0436\u0435 \u0438 \u0432 \u0434\u0440\u0443\u0433\u0438\u0445 \u044f\u0437\u044b\u043a\u0430\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. \u0422\u0438\u043f\u0438\u0447\u043d\u044b\u043c \u043f\u0440\u0438\u043c\u0435\u0440\u043e\u043c \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435. \u0414\u0430\u043b\u0435\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u043e\u0438\u0442 \u043f\u043e\u0437\u043d\u0430\u043a\u043e\u043c\u0438\u0442\u044c\u0441\u044f \u0441 if-\u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u043c\u0438 \u0432 Ruby. \u0414\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0431\u0443\u0434\u0443\u0442 \u0438\u0437\u0443\u0447\u0435\u043d\u044b \u0442\u0435\u0440\u043d\u0430\u0440\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b. \u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u0430\u044f \u043d\u0438\u0436\u0435, \u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u043d\u0430 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0441\u0442\u043e\u0432, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u043d\u0430\u0447\u0438\u043d\u0430\u044e\u0442 \u0437\u043d\u0430\u043a\u043e\u043c\u0438\u0442\u044c\u0441\u044f \u0441 Ruby. \u041e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0435 \u0423\u0441\u043b\u043e\u0432\u043d\u044b\u0439 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440 \u2013 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043d\u0430\u0431\u043e\u0440 \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0439 (\u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u043e\u0432), \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0431\u0443\u0434\u0435\u0442 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u044b\u0432\u0430\u0442\u044c\u0441\u044f \u0432 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 \u0438\u0441\u0442\u0438\u043d\u043d\u043e\u0441\u0442\u0438 [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":7175,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[313],"class_list":["post-7174","post","type-post","status-publish","format-standard","has-post-thumbnail","","category-polza","tag-ruby"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0412 Ruby \u0438\u043c\u0435\u044e\u0442\u0441\u044f \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0432\u0441\u0442\u0440\u0435\u0447\u0430\u044e\u0442\u0441\u044f \u0442\u0430\u043a\u0436\u0435 \u0438 \u0432 \u0434\u0440\u0443\u0433\u0438\u0445 \u044f\u0437\u044b\u043a\u0430\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f. \u0422\u0438\u043f\u0438\u0447\u043d\u044b\u043c \u043f\u0440\u0438\u043c\u0435\u0440\u043e\u043c \u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u0432\u0435\u0442\u0432\u043b\u0435\u043d\u0438\u0435. \u0414\u0430\u043b\u0435\u0435 \u043f\u0440\u0435\u0434\u0441\u0442\u043e\u0438\u0442 \u043f\u043e\u0437\u043d\u0430\u043a\u043e\u043c\u0438\u0442\u044c\u0441\u044f \u0441 if-\u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f\u043c\u0438 \u0432 Ruby. \u0414\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u043e \u0431\u0443\u0434\u0443\u0442 \u0438\u0437\u0443\u0447\u0435\u043d\u044b \u0442\u0435\u0440\u043d\u0430\u0440\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b. \u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u0430\u044f \u043d\u0438\u0436\u0435, \u043e\u0440\u0438\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0430 \u043d\u0430 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