{"id":2746,"date":"2015-03-28T05:42:57","date_gmt":"2015-03-28T05:42:57","guid":{"rendered":"http:\/\/bestkora.com\/IosDeveloper\/?p=2746"},"modified":"2015-08-24T16:48:40","modified_gmt":"2015-08-24T16:48:40","slug":"zadanie-2-reshenie-ubiraem-lishnie-skobki-dopolnitelnyj-punkt-1-swift-1-2-i-swift-2-0","status":"publish","type":"post","link":"https:\/\/bestkora.com\/IosDeveloper\/zadanie-2-reshenie-ubiraem-lishnie-skobki-dopolnitelnyj-punkt-1-swift-1-2-i-swift-2-0\/","title":{"rendered":"\u0417\u0430\u0434\u0430\u043d\u0438\u0435 2. \u0420\u0435\u0448\u0435\u043d\u0438\u0435 &#8212;  \u0423\u0431\u0438\u0440\u0430\u0435\u043c \u043b\u0438\u0448\u043d\u0438\u0435 \u0441\u043a\u043e\u0431\u043a\u0438 (\u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u043f\u0443\u043d\u043a\u0442 1) Swift 1.2 \u0438 Swift 2.0"},"content":{"rendered":"<p>\u0422\u0435\u043a\u0441\u0442 \u0414\u043e\u043c\u0430\u0448\u043d\u0435\u0433\u043e \u0437\u0430\u0434\u0430\u043d\u0438\u044f \u043d\u0430 \u0430\u043d\u0433\u043b\u0438\u0439\u0441\u043a\u043e\u043c \u044f\u0437\u044b\u043a\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043d\u0430\u00a0<strong><span style=\"color: #373737;\">\u00a0<\/span><a style=\"color: #1982d1;\" title=\"Developing iOS 7 Apps: Assignment 1\" href=\"https:\/\/itunes.apple.com\/us\/course\/developing-ios-8-apps-swift\/id961180099\" target=\"_blank\">iTunes \u0432 \u043f\u0443\u043d\u043a\u0442\u0435 \u201cDeveloping iOS 8 app: Programming: Project 2\u2033<\/a><\/strong><span style=\"color: #373737;\">. \u00a0\u0422\u0435\u043a\u0441\u0442 \u0414\u043e\u043c\u0430\u0448\u043d\u0435\u0433\u043e \u0437\u0430\u0434\u0430\u043d\u0438\u044f \u043d\u0430\u00a0\u0440\u0443\u0441\u0441\u043a\u043e\u043c\u00a0\u00a0\u044f\u0437\u044b\u043a\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043d\u0430 <p><span class=\"gdm-drivefile-embed\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/ssl.gstatic.com\/docs\/doclist\/images\/icon_12_pdf_list.png\" width=\"16\" height=\"16\" \/> <a href=\"https:\/\/drive.google.com\/file\/d\/0B0jZOSo2e4NmNW5OWHRhN2FkY0E\/view?usp=drivesdk\" target=\"&quot;_blank&quot;\">\u0417\u0430\u0434\u0430\u043d\u0438\u0435 2 iOS 8_new.pdf<\/a><\/span><\/p>\u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0437\u0430\u0434\u0430\u043d\u0438\u044f \u043c\u043e\u0436\u043d\u043e \u043e\u0431\u0441\u0443\u0436\u0434\u0430\u0442\u044c \u043d\u0430 \u0444\u043e\u0440\u0443\u043c\u0435\u00a0<strong><a href=\"https:\/\/groups.google.com\/forum\/?hl=ru#!forum\/swiftru\">Swift[ru]<\/a><\/strong>\u00a0. \u0412\u0430\u0448\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043b\u0443\u0447\u0448\u0435 \u0438 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u0435\u0435. \u0412\u044b\u043a\u043b\u0430\u0434\u044b\u0432\u0430\u0439\u0442\u0435 \u0435\u0433\u043e \u0432<strong>\u00a0Github<\/strong>,\u00a0\u0434\u0430\u0432\u0430\u0439\u0442\u0435 \u0441\u0441\u044b\u043b\u043a\u0443 \u043d\u0430\u00a0<strong>Dropbox<\/strong>\u00a0\u0438\u043b\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0439\u0442\u0435 \u0434\u0440\u0443\u0433\u0438\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0432\u0435\u0440\u0441\u0438\u044f\u043c\u0438.\u00a0<strong>Xcode<\/strong>\u00a0\u00a0\u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u043d\u0430\u043f\u0440\u044f\u043c\u0443\u044e \u0441\u00a0<strong>Github.<\/strong><\/span><\/p>\n<h2>\u041f\u0443\u043d\u043a\u0442 1 \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439<\/h2>\n<blockquote><p><strong>\u0421\u0434\u0435\u043b\u0430\u0439\u0442\u0435 \u0442\u0430\u043a, \u0447\u0442\u043e\u0431\u044b \u0432\u0430\u0448\u0430\u00a0<span style=\"color: #0000ff;\">description<\/span>\u00a0\u0438\u043c\u0435\u043b\u0430 \u043a\u0430\u043a \u043c\u043e\u0436\u043d\u043e \u043c\u0435\u043d\u044c\u0448\u0435 \u043a\u0440\u0443\u0433\u043b\u044b\u0445 \u0441\u043a\u043e\u0431\u043e\u043a \u0434\u043b\u044f \u0431\u0438\u043d\u0430\u0440\u043d\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439.<\/strong><\/p><\/blockquote>\n<p>\u0422\u0435\u043e\u0440\u0435\u0442\u0438\u0447\u0435\u0441\u043a\u0430\u044f \u0447\u0430\u0441\u0442\u044c \u0441\u043e\u0433\u043b\u0430\u0441\u043d\u043e \u043f\u043e\u0434\u0441\u043a\u0430\u0437\u043a\u0435 \u0432 \u0417\u0430\u0434\u0430\u043d\u0438\u0438 2 \u043f\u043e\u0442\u0440\u0435\u0431\u0443\u0435\u0442 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043a\u043e\u043d\u0446\u0435\u043f\u0446\u0438\u0438 \u201c<strong>\u043f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442\u0430<\/strong>\u00a0(precedence)\u00a0<strong>\u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439<\/strong>\u201d \u0432\u00a0<span style=\"color: #0000ff;\"><b>Op<\/b><\/span>\u00a0\u0432\u0430\u0448\u0435\u0433\u043e\u00a0<strong><span style=\"color: #0000ff;\">CalculatorBrain<\/span><\/strong><span style=\"color: #000000;\">.\u00a0<\/span><\/p>\n<p>\u0417\u0430\u043c\u0435\u0442\u0438\u043c, \u0447\u0442\u043e \u0432\u0441\u0435 \u043d\u0438\u0436\u0435\u043f\u0440\u0438\u0432\u0435\u0434\u0435\u043d\u043d\u044b\u0435 \u0440\u0430\u0441\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u044f \u043a\u0430\u0441\u0430\u044e\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u0435\u0440\u0435\u0432\u043e\u0434\u0430 \u043d\u0430\u0448\u0435\u0433\u043e \u0441\u0442\u044d\u043a\u0430, \u0437\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u043e\u0433\u043e \u0432 \u0444\u043e\u0440\u043c\u0435\u00a0<strong><a href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%9E%D0%B1%D1%80%D0%B0%D1%82%D0%BD%D0%B0%D1%8F_%D0%BF%D0%BE%D0%BB%D1%8C%D1%81%D0%BA%D0%B0%D1%8F_%D0%B7%D0%B0%D0%BF%D0%B8%D1%81%D1%8C\">\u043e\u0431\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043e\u043b\u044c\u0441\u043a\u043e\u0439 \u0437\u0430\u043f\u0438\u0441\u0438 (RPN)<\/a><\/strong>, \u043d\u0435 \u0442\u0440\u0435\u0431\u0443\u044e\u0449\u0435\u0439 \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0441\u043a\u043e\u0431\u043e\u043a, \u0432\u00a0<strong><a href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%98%D0%BD%D1%84%D0%B8%D0%BA%D1%81%D0%BD%D0%B0%D1%8F_%D0%BD%D0%BE%D1%82%D0%B0%D1%86%D0%B8%D1%8F\">\u0438\u043d\u0444\u0438\u043a\u0441\u043d\u0443\u044e \u0444\u043e\u0440\u043c\u0443 \u0441\u043e \u0441\u043a\u043e\u0431\u043a\u0430\u043c\u0438<\/a>.\u00a0<\/strong>\u0418\u043d\u0444\u0438\u043a\u0441\u043d\u0430\u044f \u0444\u043e\u0440\u043c\u0430 \u043d\u0443\u0436\u043d\u0430 \u0442\u043e\u043b\u044c\u043a\u043e \u0434\u043b\u044f \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u044f\u00a0\u043e\u043f\u0438\u0441\u0430\u043d\u0438\u044f \u0441\u0442\u044d\u043a\u0430 \u0432 \u043f\u0440\u0438\u0432\u044b\u0447\u043d\u043e\u0439 \u0434\u043b\u044f \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u0444\u043e\u0440\u043c\u0435\u00a0<strong><span style=\"color: #0000ff;\">var description<\/span><\/strong>\u00a0\u0438 \u043d\u0435 \u0432\u043b\u0438\u044f\u0435\u0442 \u043d\u0430 \u0432\u044b\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f \u043d\u0430\u0448\u0435\u0433\u043e \u043a\u0430\u043b\u044c\u043a\u0443\u043b\u044f\u0442\u043e\u0440\u0430.<\/p>\n<p><!--more--><\/p>\n<p><b>\u041f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442<\/b>,\u00a0<b>\u0440\u0430\u043d\u0433<\/b>\u00a0\u0438\u043b\u0438\u00a0<b>\u0441\u0442\u0430\u0440\u0448\u0438\u043d\u0441\u0442\u0432\u043e \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438<\/b>\u00a0\u0438\u043b\u0438\u00a0<b>\u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u0430\u00a0<\/b>\u0441\u043e\u0433\u043b\u0430\u0441\u043d\u043e<b>\u00a0<a href=\"https:\/\/ru.wikipedia.org\/wiki\/%D0%9F%D1%80%D0%B8%D0%BE%D1%80%D0%B8%D1%82%D0%B5%D1%82_%D0%BE%D0%BF%D0%B5%D1%80%D0%B0%D1%86%D0%B8%D0%B8\">Wikipedia<\/a><\/b>\u00a0\u2014 \u0444\u043e\u0440\u043c\u0430\u043b\u044c\u043d\u043e\u0435 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u043e \u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u0430\/\u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438, \u0432\u043b\u0438\u044f\u044e\u0449\u0435\u0435 \u043d\u0430 \u043e\u0447\u0435\u0440\u0435\u0434\u043d\u043e\u0441\u0442\u044c \u0435\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0432 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0438 \u0441 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u043c\u0438 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\u043f\u043e\u044d\u0442\u043e\u043c\u0443 \u0432 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0438 \u00a0<strong>X + Y * Z<\/strong>\u00a0 \u0431\u0443\u0434\u0435\u0442 \u043f\u043e\u043b\u0443\u0447\u0435\u043d\u043e \u0441\u043d\u0430\u0447\u0430\u043b\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u0435\u0434\u0435\u043d\u0438\u0435\u00a0<strong>Y * Z<\/strong>\u00a0\u00a0, \u0430 \u043f\u043e\u0442\u043e\u043c \u0443\u0436\u0435 \u0441\u0443\u043c\u043c\u0430. \u00a0\u0415\u0441\u043b\u0438 \u043f\u043e\u0440\u044f\u0434\u043e\u043a \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u0438\u043c\u0435\u043d\u043d\u043e \u0442\u0430\u043a\u043e\u0439, \u0442\u043e \u043d\u0438\u043a\u0430\u043a\u0438\u0445 \u0441\u043a\u043e\u0431\u043e\u043a \u043d\u0435 \u0442\u0440\u0435\u0431\u0443\u0435\u0442\u0441\u044f. \u0415\u0441\u043b\u0438 \u043d\u0443\u0436\u0435\u043d \u0434\u0440\u0443\u0433\u043e\u0439 \u043f\u043e\u0440\u044f\u0434\u043e\u043a 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\u043f\u0440\u0438\u043c\u0435\u0440\u0435\u00a0\u00a0<strong>X-(Y+Z)\u00a0<\/strong>\u0434\u043b\u044f \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438\u00a0<strong>\u0412\u044b\u0447\u0438\u0442\u0430\u043d\u0438\u0435<\/strong>\u00a0\u043e\u043f\u0435\u0440\u0430\u043d\u0434\u00a0<strong>(Y+Z)\u00a0<\/strong>\u044f\u0432\u043b\u044f\u0435\u0442\u0441\u044f \u043f\u0440\u0430\u0432\u044b\u043c \u043e\u043f\u0435\u0440\u0430\u043d\u0434\u043e\u043c \u0438 \u0434\u043e\u043b\u0436\u0435\u043d \u0431\u044b\u0442\u044c \u043e\u043a\u0440\u0443\u0436\u0435\u043d \u043a\u0440\u0443\u0433\u043b\u044b\u043c\u0438 \u0441\u043a\u043e\u0431\u043a\u0430\u043c\u0438. \u0412 \u0441\u043b\u0443\u0447\u0430\u0435\u00a0\u00a0\u00a0<strong>X &#8212; W &#8212; (Y+Z) \u00a0<\/strong>\u0434\u043b\u044f\u00a0\u0446\u0435\u043d\u0442\u0440\u0430\u043b\u044c\u043d\u043e\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438<b>\u00a0\u0412\u044b\u0447\u0438\u0442\u0430\u043d\u0438\u044f<\/b>\u00a0\u043e\u043f\u0435\u0440\u0430\u043d\u0434\u0430\u043c\u0438 \u0431\u0443\u0434\u0443\u0442\u00a0<b><strong>X &#8212; W \u0438\u00a0(Y+Z)<\/strong><\/b>\u00a0, \u043d\u043e \u0442\u043e\u043b\u044c\u043a\u043e \u043f\u0440\u0430\u0432\u044b\u0439 \u043e\u043f\u0435\u0440\u0430\u043d\u0434\u00a0<b><strong>(Y+Z)\u00a0<\/strong><\/b>\u043d\u0443\u0436\u0434\u0430\u0435\u0442\u0441\u044f \u0432 \u043a\u0440\u0443\u0433\u043b\u044b\u0445 \u0441\u043a\u043e\u0431\u043a\u0430\u0445.<\/p>\n<p>\u041e\u0442\u0432\u043b\u0435\u043a\u0430\u044f\u0441\u044c \u0432 \u0441\u0442\u043e\u0440\u043e\u043d\u0443, \u043d\u0430\u043f\u043e\u043c\u043d\u044e, \u0447\u0442\u043e\u00a0<strong>\u043e\u043f\u0435\u0440\u0430\u0442\u043e\u0440\u044b \u0432 Swift<\/strong>\u00a0\u0442\u0430\u043a\u0436\u0435 \u0438\u043c\u0435\u044e\u0442 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0430\u00a0<strong>\u00a0preference<\/strong>\u00a0\u0438\u00a0<strong>associativity.<\/strong>\u00a0\u041d\u0430\u043f\u0440\u0438\u043c\u0435\u0440,<\/p>\n<pre><code class=\"language-swift\" data-lang=\"swift\"><span class=\"kr\">infix<\/span> <span class=\"kr\">operator<\/span> <span class=\"o\">**<\/span> <span class=\"p\">{<\/span> <span class=\"kr\">associativity<\/span> <span class=\"kr\">left<\/span> <span class=\"kr\">precedence<\/span> <span class=\"mi\">160<\/span> <span class=\"p\">}<\/span><\/code><\/pre>\n<p>\u041d\u0430\u0438\u0431\u043e\u043b\u044c\u0448\u0435\u0435 \u043a\u043e\u043b\u0438\u0447\u0435\u0441\u0442\u0432\u043e \u043a\u0440\u0443\u0433\u043b\u044b\u0445 \u0441\u043a\u043e\u0431\u043e\u043a \u0432 \u043d\u0430\u0448\u0435\u043c \u043a\u0430\u043b\u044c\u043a\u0443\u043b\u044f\u0442\u043e\u0440\u0435 \u043f\u043b\u043e\u0434\u0438\u0442\u0441\u044f \u0432 \u0431\u0438\u043d\u0430\u0440\u043d\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044f\u0445, \u043f\u043e\u044d\u0442\u043e\u043c\u0443 \u043f\u043e\u0441\u0442\u0430\u0440\u0430\u0435\u043c\u0441\u044f \u0432 \u043f\u0435\u0440\u0432\u0443\u044e \u043e\u0447\u0435\u0440\u0435\u0434\u044c \u0438\u0437\u0431\u0430\u0432\u0438\u0442\u044c\u0441\u044f \u043e\u0442 \u043d\u0438\u0445.<br \/>\n\u0414\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u043c \u0434\u0432\u0435 \u043d\u043e\u0432\u044b\u0435 \u0432\u044b\u0447\u0438\u0441\u043b\u044f\u0435\u043c\u044b\u0435 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0435 \u0432\u00a0\u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u0435\u00a0<strong><span style=\"color: #0000ff;\">enum Op<\/span><\/strong><span style=\"color: #000000;\">\u00a0\u0432 \u043d\u0430\u0448\u0435\u043c<\/span><strong><span style=\"color: #0000ff;\">\u00a0CalculatorBrain<\/span><\/strong><\/p>\n<p style=\"padding-left: 60px;\"><strong><span style=\"color: #0000ff;\">var precedence: Int<\/span><\/strong><br \/>\n<strong><span style=\"color: #0000ff;\">\u00a0var commutative: Bool\u00a0<\/span><\/strong><\/p>\n<p>\u0414\u043b\u044f \u0431\u0438\u043d\u0430\u0440\u043d\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u044d\u0442\u0438 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u0431\u0443\u0434\u0443\u0442 \u0437\u0430\u0434\u0430\u0432\u0430\u0442\u044c\u0441\u044f \u043f\u0440\u0438 \u043e\u043f\u0440\u0435\u0434\u0435\u043b\u0435\u043d\u0438\u0438 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439, \u0430 \u0434\u043b\u044f \u0434\u0440\u0443\u0433\u0438\u0445 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u043e\u0432 \u043f\u0435\u0440\u0435\u0447\u0438\u0441\u043b\u0435\u043d\u0438\u044f\u00a0<strong><span style=\"color: #0000ff;\">enum Op\u00a0<\/span><\/strong><span style=\"color: #0000ff;\"><span style=\"color: #000000;\">\u0431\u0443\u0434\u0443\u0442<\/span><\/span><span style=\"color: #000000;\">\u00a0<\/span>\u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0442\u044c\u0441\u044f \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u044f \u00a0\u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e: \u0434\u043b\u044f\u00a0<strong><span style=\"color: #0000ff;\">precedence &#8212;<\/span><\/strong>\u00a0\u043c\u0430\u043a\u0441\u0438\u043c\u0430\u043b\u044c\u043d\u043e\u0435 \u0446\u0435\u043b\u043e\u0435 \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435\u00a0<strong><span style=\"color: #0000ff;\">Int.max<\/span><\/strong>, \u0430 \u0434\u043b\u044f\u00a0<strong><span style=\"color: #0000ff;\">\u00a0commutative &#8212; true<\/span><\/strong>:<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-11.44.03-AM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-1664 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-11.44.03-AM.png\" alt=\"Screen Shot 2015-03-29 at 11.44.03 AM\" width=\"976\" height=\"730\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-11.44.03-AM.png 976w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-11.44.03-AM-300x224.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-11.44.03-AM-401x300.png 401w\" sizes=\"auto, (max-width: 976px) 100vw, 976px\" \/><\/a><br \/>\n\u0414\u043b\u044f \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u0443\u043c\u043d\u043e\u0436\u0435\u043d\u0438\u044f \u0438 \u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0435\u043c\u00a0<strong><span style=\"color: #0000ff;\">precedence &#8212;\u00a0<\/span>2<\/strong>, \u0430 \u0434\u043b\u044f \u0441\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u0438 \u0432\u044b\u0447\u0438\u0442\u0430\u043d\u0438\u044f &#8212;<strong>1<\/strong>.\u00a0\u0414\u043b\u044f \u0432\u0441\u0435\u0445 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439, \u043a\u0440\u043e\u043c\u0435 \u00a0\u0432\u044b\u0447\u0438\u0442\u0430\u043d\u0438\u044f \u00a0\u0438 \u0434\u0435\u043b\u0435\u043d\u0438\u044f \u0443\u0441\u0442\u0430\u043d\u0430\u0432\u043b\u0438\u0432\u0430\u0435\u043c\u00a0\u00a0<strong><span style=\"color: #0000ff;\">commutative<\/span><span style=\"color: #0000ff;\">\u00a0&#8212; true<\/span><\/strong>, \u0430 \u0434\u043b\u044f\u00a0\u0432\u044b\u0447\u0438\u0442\u0430\u043d\u0438\u044f \u00a0\u0438 \u0434\u0435\u043b\u0435\u043d\u0438\u044f &#8212;<strong><span style=\"color: #0000ff;\">\u00a0false<\/span><\/strong>.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-11.50.57-AM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-1665 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-11.50.57-AM.png\" alt=\"Screen Shot 2015-03-29 at 11.50.57 AM\" width=\"898\" height=\"424\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-11.50.57-AM.png 898w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-11.50.57-AM-300x142.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-11.50.57-AM-500x236.png 500w\" sizes=\"auto, (max-width: 898px) 100vw, 898px\" \/><\/a><br \/>\n\u0412 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u043c\u044b\u0439 \u043a\u043e\u0440\u0442\u0435\u0436 \u0432\u0441\u043f\u043e\u043c\u043e\u0433\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0433\u043e \u0440\u0435\u043a\u0443\u0440\u0441\u0438\u0432\u043d\u043e\u0433\u043e \u043c\u0435\u0442\u043e\u0434\u0430\u00a0<strong><span style=\"color: #0000ff;\">\u00a0private\u00a0<\/span><span style=\"color: #0000ff;\">description<\/span><\/strong>\u00a0\u043c\u0435\u0442\u043e\u0434\u0430 \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u043c \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u043f\u0430\u0440\u0430\u043c\u0435\u0442\u0440 &#8212;\u00a0<strong>\u043f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442<\/strong>\u00a0(precedence)\u00a0<strong>\u0440\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u0439\u00a0\u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438<\/strong>\u00a0<strong><span style=\"color: #0000ff;\">precedence: Int<\/span><\/strong>. \u0411\u0438\u043d\u0430\u0440\u043d\u044b\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u044e\u0442 \u0441\u0432\u043e\u0439 \u0442\u0435\u043a\u0443\u0449\u0438\u0439 \u043f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442 \u0438 \u0441\u0440\u0430\u0432\u043d\u0438\u0432\u0430\u044e\u0442 \u0435\u0433\u043e \u0441 \u043f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442\u043e\u043c \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u043e\u0432. \u0415\u0441\u043b\u0438 \u043f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442 \u0442\u0435\u043a\u0443\u0449\u0435\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438\u00a0<strong>\u0432\u044b\u0448\u0435<\/strong>\u00a0\u043f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442\u0430 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u0430, \u0442\u043e \u043c\u044b \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u043c \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0443\u044e\u0449\u0438\u0439 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442 \u0432 \u043a\u0440\u0443\u0433\u043b\u044b\u0435 \u0441\u043a\u043e\u0431\u043a\u0438. \u0415\u0441\u043b\u0438 \u043f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442\u00a0\u0442\u0435\u043a\u0443\u0449\u0435\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438\u00a0<strong>\u0440\u0430\u0432\u0435\u043d<\/strong>\u00a0\u043f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442\u0443 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u0430, \u0442\u043e \u043c\u044b \u0430\u043d\u0430\u043b\u0438\u0437\u0438\u0440\u0443\u0435\u043c \u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u044c\u00a0<strong><span style=\"color: #0000ff;\">commutative\u00a0<\/span><\/strong>\u0442\u0435\u043a\u0443\u0449\u0435\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0438 \u0432 \u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0441\u0442\u0438 \u043e\u0442 \u044d\u0442\u043e\u0433\u043e, \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0435\u043c \u0438\u043b\u0438 \u043d\u0435\u0442\u00a0\u043a\u0440\u0443\u0433\u043b\u044b\u0435 \u0441\u043a\u043e\u0431\u043a\u0438. \u0412\u0442\u043e\u0440\u043e\u0439 \u043e\u043f\u0435\u0440\u0430\u043d\u0434\u00a0<strong><span style=\"color: #0000ff;\">operand2<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0437\u0430\u0442\u0435\u043c \u0441\u0442\u0430\u043d\u043e\u0432\u0438\u0442\u0441\u044f \u043f\u0435\u0440\u0432\u044b\u043c, \u043c\u043e\u0436\u043d\u043e \u043d\u0430 \u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u044c \u043d\u0435 \u043f\u0440\u043e\u0432\u0435\u0440\u044f\u0442\u044c, \u0442\u043e \u0435\u0441\u0442\u044c \u0434\u043b\u044f \u044d\u0442\u043e\u0433\u043e \u043e\u043f\u0435\u0440\u0430\u043d\u0434\u0430 \u043c\u044b \u043d\u0435 \u0431\u0443\u0434\u0435\u043c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c \u043a\u0440\u0443\u0433\u043b\u044b\u0435 \u0441\u043a\u043e\u0431\u043a\u0438 \u043f\u0440\u0438 \u0440\u0430\u0432\u0435\u043d\u0441\u0442\u0432\u0435 \u043f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442\u043e\u0432.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-10.34.30-PM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-1681 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-10.34.30-PM.png\" alt=\"Screen Shot 2015-03-29 at 10.34.30 PM\" width=\"1024\" height=\"1096\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-10.34.30-PM.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-10.34.30-PM-280x300.png 280w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-10.34.30-PM-957x1024.png 957w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><br \/>\n\u041a\u0440\u043e\u043c\u0435 \u0442\u043e\u0433\u043e, \u043f\u043e\u043d\u044f\u0442\u043d\u043e, \u0447\u0442\u043e \u043d\u0430 \u0432\u044b\u0445\u043e\u0434\u0435 \u044d\u0442\u043e\u0439 \u0440\u0435\u043a\u0443\u0440\u0441\u0438\u0432\u043d\u044b\u0439 \u0444\u0443\u043d\u043a\u0446\u0438\u0438\u00a0<strong><span style=\"color: #0000ff;\">result<\/span><\/strong>\u00a0\u0431\u0443\u0434\u0435\u0442 \u043e\u0431\u044b\u0447\u043d\u043e\u0439 \u0441\u0442\u0440\u043e\u043a\u043e\u0439\u00a0<strong><span style=\"color: #0000ff;\">String<\/span><\/strong>, \u0430 \u043d\u0435 \u00a0<strong>Optional<\/strong>, \u0442\u0430\u043a \u043a\u0430\u043a \u043c\u044b \u043d\u0438\u0433\u0434\u0435 \u043d\u0435 \u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0435\u043c\u00a0<strong><span style=\"color: #0000ff;\">nil<\/span><\/strong>. \u042d\u0442\u043e \u0443\u043f\u0440\u043e\u0441\u0442\u0438\u0442 \u043d\u0435\u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u044f. \u0421\u043a\u043e\u0440\u0440\u0435\u043a\u0442\u0438\u0440\u0443\u044e\u0442\u0441\u044f \u0434\u0432\u0435\u00a0<strong>non-private<\/strong>\u00a0\u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u044b\u0435\u00a0<strong><span style=\"color: #0000ff;\">var\u00a0<\/span><span style=\"color: #0000ff;\">description<\/span>\u00a0<\/strong>\u0438\u00a0<strong><span style=\"color: #0000ff;\">var\u00a0description1<\/span><\/strong>\u00a0\u0438 \u0440\u0435\u043a\u0443\u0440\u0441\u0438\u0432\u043d\u044b\u0439 \u043c\u0435\u0442\u043e\u0434 \u0431\u043e\u043b\u0435\u0435 \u0432\u044b\u0441\u043e\u043a\u043e \u043f\u043e\u0440\u044f\u0434\u043a\u0430 \u0434\u043b\u044f \u0440\u0430\u0441\u0447\u0435\u0442\u0430 \u043d\u0435\u0441\u043a\u043e\u043b\u044c\u043a\u0438\u0445 \u0437\u0430\u043a\u043e\u043d\u0447\u0435\u043d\u043d\u044b\u0445 \u0432\u044b\u0440\u0430\u0436\u0435\u043d\u0438\u0439\u00a0<strong><span style=\"color: #0000ff;\">descParts<\/span><\/strong>\u00a0(\u0432 \u0443\u0447\u0435\u0431\u043d\u044b\u0445 \u0446\u0435\u043b\u044f\u0445 \u044f \u043e\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u0432 \u043a\u043e\u0434\u0435 \u0434\u0432\u0430 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u0430 \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u0438\u043d\u0444\u0438\u043a\u0441\u043d\u043e\u0433\u043e \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u043d\u0430\u0448\u0435\u0433\u043e \u0441\u0442\u044d\u043a\u0430:\u00a0<span style=\"color: #0000ff;\"><strong>description<\/strong><\/span>\u00a0c \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435\u043c \u043e\u0431\u044b\u0447\u043d\u043e\u0439<strong><span style=\"color: #0000ff;\">\u00a0do&#8230;while<\/span>\u00a0<\/strong>\u043a\u043e\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 \u0438\u00a0<span style=\"color: #0000ff;\"><strong>description1<\/strong><\/span>\u00a0\u0441 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435\u043c \u0435\u0449\u0435 \u043e\u0434\u043d\u043e\u0433\u043e \u00a0\u0440\u0435\u043a\u0443\u0440\u0441\u0438\u0432\u043d\u044b\u0439 \u043c\u0435\u0442\u043e\u0434\u0430).<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-12.17.47-PM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-1667 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-12.17.47-PM.png\" alt=\"Screen Shot 2015-03-29 at 12.17.47 PM\" width=\"1014\" height=\"708\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-12.17.47-PM.png 1014w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-12.17.47-PM-300x209.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-12.17.47-PM-430x300.png 430w\" sizes=\"auto, (max-width: 1014px) 100vw, 1014px\" \/><\/a><\/p>\n<p>\u0411\u044b\u043b\u0438 \u043f\u0440\u043e\u0432\u0435\u0434\u0435\u043d\u044b \u043c\u043d\u043e\u0433\u043e\u0447\u0438\u0441\u043b\u0435\u043d\u043d\u044b\u0435 \u0442\u0435\u0441\u0442\u044b \u043d\u0430 \u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439\u00a0<strong><span style=\"color: #0000ff;\">description.<\/span><\/strong>\u00a0\u0421\u0440\u0435\u0434\u0438 \u043d\u0438\u0445 \u043e\u0441\u043e\u0431\u0435\u043d\u043d\u043e \u0432\u044b\u0434\u0435\u043b\u044f\u044e\u0442\u0441\u044f \u0442\u0435, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u043d\u0435 \u0434\u0430\u044e\u0442 \u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u044b\u0439 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442, \u0435\u0441\u043b\u0438 \u043d\u0435 \u0443\u0447\u0435\u0441\u0442\u044c &#171;\u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u044c&#187; \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0439.<br \/>\n\u0421\u0442\u044d\u043a\u00a0<strong>3\u00a0\u21b5 4\u00a0\u21b5 5 \u00a0+ \u00a0&#8212;<\/strong>\u00a0\u0434\u043e\u043b\u0436\u0435\u043d \u0434\u0430\u0432\u0430\u0442\u044c\u00a0<strong>3 &#8212; ( 5 + 4)<\/strong>, \u0430 \u043d\u0435\u00a0<strong>3 &#8212; 5 + 4<\/strong><\/p>\n<p>\u0421\u0442\u044d\u043a\u00a0<strong>3\u00a0\u21b5 4\u00a0\u21b5 \u00a05 \u00a0\u00d7 \u00a0\u00f7 &#8212;<\/strong>\u00a0\u0434\u043e\u043b\u0436\u0435\u043d \u0434\u0430\u0432\u0430\u0442\u044c \u00a0<strong>3\u00a0\u00f7 (5\u00a0\u00d7\u00a0 4)<\/strong>, \u0430 \u043d\u0435\u00a0<strong>3 \u00f7\u00a05 \u00d7\u00a0 4<\/strong><\/p>\n<p>\u0421\u0442\u044d\u043a<strong>\u00a010\u00a0\u21b5 5\u21b5 \u00a02 \u00a0&#8212; &#8212; \u00a0&#8212;<\/strong>\u00a0\u0434\u043e\u043b\u0436\u0435\u043d \u0434\u0430\u0432\u0430\u0442\u044c\u00a0<strong>10\u00a0&#8212; (5 &#8212; 2)<\/strong>, \u0430 \u043d\u0435\u00a0<strong>10\u00a0&#8212; 5 &#8212; \u00a02<\/strong><\/p>\n<p>\u0421\u0442\u044d\u043a<strong>\u00a03 \u21b5 5\u21b5 &#8212; 7\u00a0\u21b5 8\u21b5\u00a0&#8212;\u00a0 &#8212;\u00a0<\/strong>\u00a0\u0434\u043e\u043b\u0436\u0435\u043d \u0434\u0430\u0432\u0430\u0442\u044c\u00a0<strong>3 \u2212 5 \u2212 (7 \u2212 8)<\/strong>, \u0430 \u043d\u0435\u00a0<strong>3 \u2212 5 \u2212 7 \u2212 8<\/strong><\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/08\/Screen-Shot-2015-08-24-at-8.52.47-AM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-2750 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/08\/Screen-Shot-2015-08-24-at-8.52.47-AM.png\" alt=\"Screen Shot 2015-08-24 at 8.52.47 AM\" width=\"934\" height=\"468\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/08\/Screen-Shot-2015-08-24-at-8.52.47-AM.png 934w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/08\/Screen-Shot-2015-08-24-at-8.52.47-AM-300x150.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/08\/Screen-Shot-2015-08-24-at-8.52.47-AM-500x251.png 500w\" sizes=\"auto, (max-width: 934px) 100vw, 934px\" \/><\/a><\/p>\n<p>\u041a\u043e\u0434 \u043c\u043e\u0436\u043d\u043e \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c \u043d\u0430<strong>\u00a0<a href=\"https:\/\/github.com\/BestKora\/Calculator-cs193p-Winter-2015-Assigment-2\/tree\/Extra1Correct\">Github<\/a>.<\/strong><\/p>\n<p>\u0414\u043b\u044f \u0442\u0435\u0441\u0442\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0440\u0430\u0437\u043c\u0435\u0441\u0442\u0438\u0442\u044c \u0442\u0435\u0441\u0442\u044b \u0432 \u0444\u0430\u0439\u043b\u0435 <strong>CalculatorBrainTests<\/strong> \u0438 \u0432\u043c\u0435\u0441\u0442\u043e \u0437\u0430\u043f\u0443\u0441\u043a\u0430 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f \u043a\u043d\u043e\u043f\u043a\u043e\u0439 <strong>Run<\/strong>, \u043d\u0443\u0436\u043d\u043e \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c <strong>Test<\/strong><\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/08\/Screen-Shot-2015-08-24-at-8.57.18-AM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-2751 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/08\/Screen-Shot-2015-08-24-at-8.57.18-AM.png\" alt=\"Screen Shot 2015-08-24 at 8.57.18 AM\" width=\"1140\" height=\"1004\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/08\/Screen-Shot-2015-08-24-at-8.57.18-AM.png 1140w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/08\/Screen-Shot-2015-08-24-at-8.57.18-AM-300x264.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/08\/Screen-Shot-2015-08-24-at-8.57.18-AM-1024x902.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/08\/Screen-Shot-2015-08-24-at-8.57.18-AM-341x300.png 341w\" sizes=\"auto, (max-width: 1140px) 100vw, 1140px\" \/><\/a><\/p>\n<p>\u041f\u043e\u043b\u043d\u044b\u0439 \u0441\u043f\u0438\u0441\u043e\u043a \u0442\u0435\u0441\u0442\u043e\u0432 \u043d\u0430 \u043f\u0440\u0430\u0432\u0438\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0444\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f\u00a0<span style=\"color: #0000ff;\"><strong>description <\/strong><span style=\"color: #000000;\">\u043f\u0440\u0438\u0432\u0435\u0434\u0435\u043d \u043d\u0438\u0436\u0435.<\/span><\/span><\/p>\n<p>[objc]<br \/>\nclass CalculatorBrainTests: XCTestCase {<br \/>\n     private var brain = CalculatorBrain()<\/p>\n<p>    func testPushOperandVariable() {<br \/>\n        XCTAssertNil(brain.pushOperand(&quot;x&quot;))<br \/>\n        brain.setVariable (&quot;x&quot;, value: 5.2)<br \/>\n        XCTAssertEqual(5.2, brain.pushOperand(&quot;x&quot;)!)<br \/>\n        XCTAssertEqual(10.4, brain.performOperation(&quot;+&quot;)!)<br \/>\n    }<\/p>\n<p>    func testDescription() {<br \/>\n        \/\/ cos(10)<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(10)!, 10)<br \/>\n        XCTAssertTrue(brain.performOperation(&quot;cos&quot;)! &#8212; -0.839 &amp;lt; 0.1)<br \/>\n        XCTAssertEqual(brain.displayStack(), &quot;10.0 cos&quot;)<\/p>\n<p>        \/\/ 3 &#8212; 5<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertEqual(brain.pushOperand(5)!, 5)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;\u2212&quot;)!, -2)<br \/>\n        XCTAssertEqual(brain.description, &quot;3 \u2212 5&quot;)<\/p>\n<p>        \/\/ 23.5<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(23.5)!, 23.5)<br \/>\n        XCTAssertEqual(brain.description, &quot;23.5&quot;)<\/p>\n<p>        \/\/ \u03c0<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;\u03c0&quot;)!, M_PI)<br \/>\n        XCTAssertEqual(brain.description, &quot;\u03c0&quot;)<\/p>\n<p>        \/\/ x<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertNil(brain.pushOperand(&quot;x&quot;))<br \/>\n        XCTAssertEqual(brain.description, &quot;x&quot;)<\/p>\n<p>        \/\/ \u221a(10) + 3<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(10)!, 10)<br \/>\n        XCTAssertTrue(brain.performOperation(&quot;\u221a&quot;)! &#8212; 3.162 &amp;lt; 0.1)<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertTrue(brain.performOperation(&quot;+&quot;)! &#8212; 6.162 &amp;lt; 0.1)<br \/>\n        XCTAssertEqual(brain.description, &quot;\u221a(10) + 3&quot;)<\/p>\n<p>        \/\/ \u221a(3 + 5)<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertEqual(brain.pushOperand(5)!, 5)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;+&quot;)!, 8)<br \/>\n        XCTAssertTrue(brain.performOperation(&quot;\u221a&quot;)! &#8212; 2.828 &amp;lt; 0.1)<br \/>\n        XCTAssertEqual(brain.description, &quot;\u221a(3 + 5)&quot;)<\/p>\n<p>        \/\/ 3 + (5 + 4) &#8212;&amp;gt;  3 + 5 + 4<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertEqual(brain.pushOperand(5)!, 5)<br \/>\n        XCTAssertEqual(brain.pushOperand(4)!, 4)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;+&quot;)!, 9)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;+&quot;)!, 12)<br \/>\n        XCTAssertEqual(brain.description, &quot;3 + 5 + 4&quot;)<\/p>\n<p>        \/\/ (3 + 5) * 6<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertEqual(brain.pushOperand(5)!, 5)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;+&quot;)!, 8)<br \/>\n        XCTAssertEqual(brain.pushOperand(6)!, 6)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;\u00d7&quot;)!, 48)<br \/>\n        XCTAssertEqual(brain.description, &quot;(3 + 5) \u00d7 6&quot;)<\/p>\n<p>        \/\/ \u221a(3 + \u221a(5)) \u00f7 6<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertEqual(brain.pushOperand(5)!, 5)<br \/>\n        XCTAssertTrue(brain.performOperation(&quot;\u221a&quot;)! &#8212; 2.236 &amp;lt; 0.1)<br \/>\n        XCTAssertTrue(brain.performOperation(&quot;+&quot;)! &#8212; 5.236 &amp;lt; 0.1)<br \/>\n        XCTAssertTrue(brain.performOperation(&quot;\u221a&quot;)! &#8212; 2.288 &amp;lt; 0.1)<br \/>\n        XCTAssertEqual(brain.pushOperand(6)!, 6)<br \/>\n        XCTAssertTrue(brain.performOperation(&quot;\u00f7&quot;)! &#8212; 0.381 &amp;lt; 0.1)<br \/>\n        XCTAssertEqual(brain.description, &quot;\u221a(3 + \u221a(5)) \u00f7 6&quot;)<\/p>\n<p>        \/\/ ? + 3<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertNil(brain.performOperation(&quot;+&quot;))<br \/>\n        XCTAssertEqual(brain.description, &quot;? + 3&quot;)<\/p>\n<p>        \/\/ \u221a(3 + 5), cos(\u03c0)<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertEqual(brain.pushOperand(5)!, 5)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;+&quot;)!, 8)<br \/>\n        XCTAssertTrue(brain.performOperation(&quot;\u221a&quot;)! &#8212; 2.828 &amp;lt; 0.1)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;\u03c0&quot;)!, M_PI)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;cos&quot;)!, -1)<br \/>\n        XCTAssertEqual(brain.description, &quot;\u221a(3 + 5), cos(\u03c0)&quot;)<\/p>\n<p>        \/\/ 3 * (5 + 4)<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertEqual(brain.pushOperand(5)!, 5)<br \/>\n        XCTAssertEqual(brain.pushOperand(4)!, 4)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;+&quot;)!, 9)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;\u00d7&quot;)!, 27)<br \/>\n        XCTAssertEqual(brain.description, &quot;3 \u00d7 (5 + 4)&quot;)<\/p>\n<p>        \/\/ 3 &#8212; (5 + 4) commutative test<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertEqual(brain.pushOperand(5)!, 5)<br \/>\n        XCTAssertEqual(brain.pushOperand(4)!, 4)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;+&quot;)!, 9)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;\u2212&quot;)!, -6)<br \/>\n        XCTAssertEqual(brain.description, &quot;3 \u2212 (5 + 4)&quot;)<\/p>\n<p>        \/\/ 3 \/ (5 \u00d7 4) commutative test<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertEqual(brain.pushOperand(5)!, 5)<br \/>\n        XCTAssertEqual(brain.pushOperand(4)!, 4)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;\u00d7&quot;)!, 20)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;\u00f7&quot;)!, 0.15)<br \/>\n        XCTAssertEqual(brain.description, &quot;3 \u00f7 (5 \u00d7 4)&quot;)<\/p>\n<p>       \/\/ (3 + 5) + (7 + 8)<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertEqual(brain.pushOperand(5)!, 5)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;+&quot;)!, 8)<br \/>\n        XCTAssertEqual(brain.pushOperand(7)!, 7)<br \/>\n        XCTAssertEqual(brain.pushOperand(8)!, 8)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;+&quot;)!, 15)<br \/>\n        XCTAssertTrue(brain.performOperation(&quot;\u00f7&quot;)! &#8212; 0.53333 &amp;lt; 0.1)<br \/>\n        XCTAssertEqual(brain.description, &quot;(3 + 5) \u00f7 (7 + 8)&quot;)<\/p>\n<p>        \/\/ 3 &#8212; 5 &#8212; (7 &#8212; 8) commutative test<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertEqual(brain.pushOperand(5)!, 5)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;\u2212&quot;)!, -2)<br \/>\n        XCTAssertEqual(brain.pushOperand(7)!, 7)<br \/>\n        XCTAssertEqual(brain.pushOperand(8)!, 8)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;\u2212&quot;)!, -1)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;\u2212&quot;)!, -1)<br \/>\n        XCTAssertEqual(brain.description, &quot;3 \u2212 5 \u2212 (7 \u2212 8)&quot;)<\/p>\n<p>        \/\/ (3 + 5) \u00d7 (7 + 8)<br \/>\n        brain = CalculatorBrain()<br \/>\n        XCTAssertEqual(brain.pushOperand(3)!, 3)<br \/>\n        XCTAssertEqual(brain.pushOperand(5)!, 5)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;+&quot;)!, 8)<br \/>\n        XCTAssertEqual(brain.pushOperand(7)!, 7)<br \/>\n        XCTAssertEqual(brain.pushOperand(8)!, 8)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;+&quot;)!, 15)<br \/>\n        XCTAssertEqual(brain.performOperation(&quot;\u00d7&quot;)!, 120)<br \/>\n        XCTAssertTrue(brain.performOperation(&quot;\u221a&quot;)! &#8212; 10.9544 &amp;lt; 0.1)<br \/>\n        XCTAssertEqual(brain.description, &quot;\u221a((3 + 5) \u00d7 (7 + 8))&quot;)<\/p>\n<p>    }<br \/>\n}<\/p>\n<p>[\/objc]<\/p>\n<p>\u0412\u043e\u0437\u043c\u043e\u0436\u0435\u043d \u0438 \u043d\u0435\u043c\u043d\u043e\u0433\u043e \u0434\u0440\u0443\u0433\u043e\u0439 \u0440\u0435\u043a\u0443\u0440\u0441\u0438\u0432\u043d\u044b\u0439 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u00a0<strong><span style=\"color: #0000ff;\">description<\/span><\/strong>, \u0443\u0431\u0438\u0440\u0430\u044e\u0449\u0438\u0439 \u043b\u0438\u0448\u043d\u0438\u0435 \u043a\u0440\u0443\u0433\u043b\u044b\u0435 \u0441\u043a\u043e\u0431\u043a\u0438 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u043f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442\u043e\u0432 \u0438 \u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u0438. \u0415\u0441\u043b\u0438 \u043c\u044b \u0432\u0435\u0440\u043d\u0435\u043c\u0441\u044f \u043a \u043d\u0430\u0448\u0435\u043c\u0443 \u043f\u0440\u0438\u043c\u0435\u0440\u0443<strong>\u00a0X &#8212; (Y+Z)<\/strong>, \u0442\u043e \u043c\u044b \u043c\u043e\u0436\u0435\u043c \u043f\u0440\u043e\u0432\u043e\u0434\u0438\u0442\u044c \u00a0\u0430\u043d\u0430\u043b\u0438\u0437 \u043f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442\u043e\u0432 \u043a\u0430\u043a \u043d\u0430\u0445\u043e\u0434\u044f\u0441\u044c \u0432\u00a0<strong>\u0440\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438<\/strong>\u00a0(\u0432 \u043d\u0430\u0448\u0435\u043c \u0441\u043b\u0443\u0447\u0430\u0435\u00a0<strong>&#171;-&#171;<\/strong>), \u0442\u0430\u043a \u0438 \u0432\u00a0<strong>\u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u043e\u043f\u0435\u0440\u0430\u043d\u0434\u0430<\/strong>\u00a0(\u0432 \u043d\u0430\u0448\u0435\u043c \u0441\u043b\u0443\u0447\u0430\u0435\u00a0<strong>&#171;+&#187;<\/strong>. \u0412 \u043f\u0435\u0440\u0432\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u043c\u044b \u043f\u0440\u0438 \u0440\u0430\u0432\u0435\u043d\u0441\u0442\u0432\u0435 \u043f\u0440\u0438\u043e\u0440\u0438\u0442\u0435\u0442\u043e\u0432 \u0430\u043d\u0430\u043b\u0438\u0437\u0438\u0440\u0443\u0435\u043c \u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u044c\u00a0<strong>\u0442\u0435\u043a\u0443\u0449\u0435\u0439<\/strong>\u00a0<strong>\u0440\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438\u00a0<\/strong>\u0438 \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0435\u043c \u0432 \u043a\u0440\u0443\u0433\u043b\u044b\u0435 \u0441\u043a\u043e\u0431\u043a\u0438<strong>\u00a0\u043e\u043f\u0435\u0440\u0430\u043d\u0434\u044b.\u00a0<\/strong>\u0412\u043e \u0432\u0442\u043e\u0440\u043e\u043c \u0441\u043b\u0443\u0447\u0430\u0435 \u043c\u044b \u0430\u043d\u0430\u043b\u0438\u0437\u0438\u0440\u0443\u0435\u043c \u043a\u043e\u043c\u043c\u0443\u0442\u0430\u0442\u0438\u0432\u043d\u043e\u0441\u0442\u044c<strong>\u00a0\u0440\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u0441\u043a\u043e\u0439 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0434\u043e\u043b\u0436\u043d\u0430 \u0431\u044b\u0442\u044c \u043f\u0435\u0440\u0435\u0434\u0430\u043d\u0430 \u043d\u0430 \u0432\u0445\u043e\u0434\u00a0<span style=\"color: #0000ff;\">description<\/span>,<\/strong>\u00a0\u0438 \u0432 \u043a\u0440\u0443\u0433\u043b\u044b\u0435 \u0441\u043a\u043e\u0431\u043a\u0438 \u043f\u0440\u0438\u0434\u0435\u0442\u0441\u044f \u0437\u0430\u043a\u043b\u044e\u0447\u0430\u0442\u044c \u0432\u0435\u0441\u044c \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u043e\u043f\u0435\u0440\u0430\u043d\u0434\u0430.<\/p>\n<p>\u0423 \u043d\u0430\u0441 \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u043f\u0435\u0440\u0432\u044b\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u044d\u0442\u043e\u0433\u043e \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u0430.<\/p>\n<p>\u0412 \u0443\u0447\u0435\u0431\u043d\u044b\u0445 \u0446\u0435\u043b\u044f\u0445 \u043f\u0440\u0438\u0432\u043e\u0436\u0443 \u0432\u0442\u043e\u0440\u043e\u0439 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 \u0430\u043b\u0433\u043e\u0440\u0438\u0442\u043c\u0430, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u0432 \u043a\u043e\u0434\u0435 \u043d\u0430<strong><a href=\"https:\/\/github.com\/BestKora\/Calculator-cs193p-Winter-2015-Assigment-2\/tree\/Extra1Correct\">\u00a0Github<\/a><\/strong>\u00a0\u0437\u0430\u043a\u043e\u043c\u043c\u0435\u043d\u0442\u0438\u0440\u043e\u0432\u0430\u043d.<\/p>\n<p><a href=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-1.27.50-PM.png\"><img loading=\"lazy\" decoding=\"async\" class=\"alignleft wp-image-1671 size-full\" src=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-1.27.50-PM.png\" alt=\"Screen Shot 2015-03-29 at 1.27.50 PM\" width=\"1182\" height=\"910\" srcset=\"https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-1.27.50-PM.png 1182w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-1.27.50-PM-300x231.png 300w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-1.27.50-PM-1024x788.png 1024w, https:\/\/bestkora.com\/IosDeveloper\/wp-content\/uploads\/2015\/03\/Screen-Shot-2015-03-29-at-1.27.50-PM-390x300.png 390w\" sizes=\"auto, (max-width: 1182px) 100vw, 1182px\" \/><\/a><\/p>\n<p>\u0414\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u044d\u0442\u043e\u0433\u043e \u043c\u0435\u0442\u043e\u0434\u0430\u00a0<strong><span style=\"color: #0000ff;\">description\u00a0<\/span><\/strong>\u043d\u0435\u043e\u0431\u0445\u043e\u0434\u0438\u043c\u043e \u0432<strong><span style=\"color: #0000ff;\">\u00a0var precedence: Int\u00a0<\/span><\/strong><br \/>\n\u0432\u043e\u0437\u0432\u0440\u0430\u0449\u0430\u0442\u044c \u0432\u043c\u0435\u0441\u0442\u043e\u00a0<strong><span style=\"color: #0000ff;\">return Int.max<\/span><\/strong>\u00a0\u0434\u0440\u0443\u0433\u043e\u0435 \u00a0<strong><span style=\"color: #0000ff;\">return 0<\/span><\/strong><br \/>\n\u041d\u043e \u0447\u0435\u043c \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u0435\u043d \u044d\u0442\u043e\u0442 \u0432\u0430\u0440\u0438\u0430\u043d\u0442 ? \u041f\u0440\u0438 \u0432\u044b\u0437\u043e\u0432\u0435 \u044d\u0442\u043e\u0433\u043e \u043c\u0435\u0442\u043e\u0434\u0430\u00a0\u00a0<strong><span style=\"color: #0000ff;\">description (remainder)\u00a0<\/span><\/strong><span style=\"color: #000000;\">\u0432 \u043f\u0435\u0440\u0435\u043c\u0435\u043d\u043d\u043e\u0439\u00a0<\/span>\u00a0<strong><span style=\"color: #0000ff;\">var description: String\u00a0<\/span><\/strong>\u00a0\u043c\u043e\u0436\u043d\u043e \u043d\u0435 \u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0442\u044c \u0434\u043e\u043f\u043e\u043b\u043d\u0438\u0442\u0435\u043b\u044c\u043d\u044b\u0439 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442, \u0442\u0430\u043a \u043a\u0430\u043a \u0431\u0443\u0434\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u0437\u043d\u0430\u0447\u0435\u043d\u0438\u0435 \u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u043d\u043e\u0433\u043e \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442 \u043f\u043e \u00a0\u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e\u00a0<strong><span style=\"color: #0000ff;\">opPrev: Op = .Variable (&#171;x&#187;)<\/span><\/strong>, \u043a\u043e\u0442\u043e\u0440\u043e\u0435\u00a0\u0438\u043c\u0435\u0435\u0442\u00a0<span style=\"color: #0000ff;\"><strong>precedence = 0<\/strong><\/span>\u00a0\u0438\u00a0<strong><span style=\"color: #0000ff;\">commutative = true.<\/span><\/strong><span style=\"color: #0000ff;\"><span style=\"color: #000000;\">\u00a0\u042d\u0442\u043e \u0434\u0435\u043c\u043e\u043d\u0441\u0442\u0440\u0438\u0440\u0443\u0435\u0442 \u0433\u0438\u0431\u043a\u0438\u0435 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438\u00a0<strong>Swift<\/strong>\u00a0\u0434\u043e\u0431\u0430\u0432\u043b\u044f\u0442\u044c \u043d\u043e\u0432\u044b\u0435 \u0430\u0440\u0433\u0443\u043c\u0435\u043d\u0442\u044b \u0432 \u0444\u0443\u043d\u043a\u0446\u0438\u0438, \u043d\u0435 \u043c\u0435\u043d\u044f\u044f \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u043a \u043d\u0438\u043c.<\/span><\/span><\/p>\n<p>\u041a\u043e\u0434 \u0434\u043b\u044f\u00a0<strong>Swift 1.2<\/strong>\u00a0 \u0438\u00a0<strong>iOS 8.4\u00a0<\/strong>\u043c\u043e\u0436\u043d\u043e \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c \u043d\u0430<strong>\u00a0<a href=\"https:\/\/github.com\/BestKora\/Calculator-cs193p-Winter-2015-Assigment-2\/tree\/Extra1Correct\">Github<\/a><\/strong>.<\/p>\n<p>\u041a\u043e\u0434 \u0434\u043b\u044f\u00a0<strong>Swift 2.0<\/strong>\u00a0\u00a0\u0438\u00a0<strong>iOS 9<\/strong>\u00a0\u043c\u043e\u0436\u043d\u043e \u043f\u043e\u0441\u043c\u043e\u0442\u0440\u0435\u0442\u044c \u043d\u0430\u00a0<strong><a href=\"https:\/\/github.com\/BestKora\/CalculatorBrain-Assignment-2-iOS-9\">Github<\/a><\/strong>.<\/p>\n<p>\u041f\u0440\u043e\u0434\u043e\u043b\u0436\u0435\u043d\u0438\u0435 \u0441\u043b\u0435\u0434\u0443\u0435\u0442&#8230;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0422\u0435\u043a\u0441\u0442 \u0414\u043e\u043c\u0430\u0448\u043d\u0435\u0433\u043e \u0437\u0430\u0434\u0430\u043d\u0438\u044f \u043d\u0430 \u0430\u043d\u0433\u043b\u0438\u0439\u0441\u043a\u043e\u043c \u044f\u0437\u044b\u043a\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043d\u0430\u00a0\u00a0iTunes \u0432 \u043f\u0443\u043d\u043a\u0442\u0435 \u201cDeveloping iOS 8 app: Programming: Project 2\u2033. \u00a0\u0422\u0435\u043a\u0441\u0442 \u0414\u043e\u043c\u0430\u0448\u043d\u0435\u0433\u043e \u0437\u0430\u0434\u0430\u043d\u0438\u044f \u043d\u0430\u00a0\u0440\u0443\u0441\u0441\u043a\u043e\u043c\u00a0\u00a0\u044f\u0437\u044b\u043a\u0435 \u0434\u043e\u0441\u0442\u0443\u043f\u0435\u043d \u043d\u0430 \u0420\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u044b \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0437\u0430\u0434\u0430\u043d\u0438\u044f \u043c\u043e\u0436\u043d\u043e \u043e\u0431\u0441\u0443\u0436\u0434\u0430\u0442\u044c \u043d\u0430 \u0444\u043e\u0440\u0443\u043c\u0435\u00a0Swift[ru]\u00a0. \u0412\u0430\u0448\u0435 \u0440\u0435\u0448\u0435\u043d\u0438\u0435 \u043c\u043e\u0436\u0435\u0442 \u0431\u044b\u0442\u044c \u043b\u0443\u0447\u0448\u0435 \u0438 \u0438\u043d\u0442\u0435\u0440\u0435\u0441\u043d\u0435\u0435. \u0412\u044b\u043a\u043b\u0430\u0434\u044b\u0432\u0430\u0439\u0442\u0435 \u0435\u0433\u043e \u0432\u00a0Github,\u00a0\u0434\u0430\u0432\u0430\u0439\u0442\u0435 &hellip; <a href=\"https:\/\/bestkora.com\/IosDeveloper\/zadanie-2-reshenie-ubiraem-lishnie-skobki-dopolnitelnyj-punkt-1-swift-1-2-i-swift-2-0\/\">\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":[22,23,14,4],"tags":[30,26],"class_list":["post-2746","post","type-post","status-publish","format-standard","hentry","category-ios-8","category-stanford-cs-193p-ios-8","category-swift","category-domashnee-zadanie","tag-domashnee-zadanie","tag-zadanie-ios-8"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.8 - 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\u043a\u0443\u0440\u0441\u043e\u0432 &quot;\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 iOS 8 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 \u043d\u0430 Swift&quot;\" \/>\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\\\/zadanie-2-reshenie-ubiraem-lishnie-skobki-dopolnitelnyj-punkt-1-swift-1-2-i-swift-2-0\\\/#article\",\"name\":\"\\u0417\\u0430\\u0434\\u0430\\u043d\\u0438\\u0435 2. \\u0420\\u0435\\u0448\\u0435\\u043d\\u0438\\u0435 - \\u0423\\u0431\\u0438\\u0440\\u0430\\u0435\\u043c \\u043b\\u0438\\u0448\\u043d\\u0438\\u0435 \\u0441\\u043a\\u043e\\u0431\\u043a\\u0438 (\\u0434\\u043e\\u043f\\u043e\\u043b\\u043d\\u0438\\u0442\\u0435\\u043b\\u044c\\u043d\\u044b\\u0439 \\u043f\\u0443\\u043d\\u043a\\u0442 1) Swift 1.2 \\u0438 Swift 2.0 | \\u041e\\u0431\\u0443\\u0447\\u0430\\u044e\\u0449\\u0438\\u0439 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