{"id":846,"date":"2017-01-29T21:55:50","date_gmt":"2017-01-29T12:55:50","guid":{"rendered":"http:\/\/okamurax.com\/?p=846"},"modified":"2020-05-05T01:16:59","modified_gmt":"2020-05-04T16:16:59","slug":"c-%e3%82%aa%e3%83%96%e3%82%b8%e3%82%a7%e3%82%af%e3%83%88%e6%8c%87%e5%90%91","status":"publish","type":"post","link":"https:\/\/appbay.org\/?p=846","title":{"rendered":"C# \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411 \u57fa\u790e\u77e5\u8b58"},"content":{"rendered":"<h2>\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0<\/h2>\n<pre class=\"lang:default decode:true\">using System;\r\n\r\nnamespace ConsoleApplication1\r\n{\r\n    class Program\r\n    {\r\n        static void Main(string[] args)\r\n        {\r\n            \/\/ \u5909\u6570\u306e\u578b\uff1a \u9759\u7684\u306a\u578b\r\n            \/\/ \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u578b\uff1a \u52d5\u7684\u306a\u578b\r\n\r\n            Base a = new Base();\r\n            Base b = new derived(); \/\/ \u57fa\u5e95\u30af\u30e9\u30b9\u306e\u578b\u306b\u6d3e\u751f\u30af\u30e9\u30b9\u3092\u683c\u7d0d\u3067\u304d\u308b\u3002\r\n            \/\/ derived c = new Base(); \u3053\u308c\u306f\u30a8\u30e9\u30fc\r\n            derived d = new derived();\r\n\r\n            \/\/ typeof() \u306f\u9759\u7684\u306a\u578b\u3092\u53d6\u5f97\u3067\u304d\u308b\u3002\r\n            Console.WriteLine(typeof(Base));\r\n\r\n            \/\/ GetType() \u306f\u52d5\u7684\u306a\u578b\u3092\u53d6\u5f97\u3067\u304d\u308b\u3002\r\n            Console.WriteLine(b.GetType()); \/\/ #=&gt; derived\r\n\r\n            \/* \u57fa\u5e95\u30af\u30e9\u30b9\u306e\u5909\u6570\u306b\u6d3e\u751f\u30af\u30e9\u30b9\u306e\u5909\u6570\u3092\u6e21\u3059\u3053\u3068\uff1a\u30a2\u30c3\u30d7\u30ad\u30e3\u30b9\u30c8\r\n            \u6d3e\u751f\u30af\u30e9\u30b9\u306e\u5909\u6570\u306b\u57fa\u5e95\u30af\u30e9\u30b9\u306e\u5909\u6570\u3092\u6e21\u3059\u3053\u3068\uff1a\u3000\u30c0\u30a6\u30f3\u30ad\u30e3\u30b9\u30c8\r\n            \u30c0\u30a6\u30f3\u30ad\u30e3\u30b9\u30c8\u306f\u660e\u793a\u7684\u306a\u30ad\u30e3\u30b9\u30c8\u304c\u5fc5\u8981 *\/\r\n\r\n            \/\/--------------------------------------------------------\r\n\r\n            \/\/ \u9759\u7684\u306a\u578b\u3092\u512a\u5148\u3057\u3066\u30e1\u30bd\u30c3\u30c9\u306f\u547c\u3070\u308c\u308b\u3002\r\n\r\n            a.jump(); \/\/ this is base \r\n            b.jump(); \/\/ this is base\r\n            d.jump(); \/\/ this is derived\r\n\r\n            \/\/ b\u306f\u30a2\u30c3\u30d7\u30ad\u30e3\u30b9\u30c8\u3055\u308c\u3066\u3044\u308b\u3002\r\n            \/\/ a.RayDown(); \u3053\u3053\u306f\u30a8\u30e9\u30fc\u3002\r\n            \/\/ b.RayDown(); \u3053\u3053\u306f\u30a8\u30e9\u30fc\u3002\r\n            d.RayDown();\r\n\r\n            \/* b\u306f\u6d3e\u751f\u30af\u30e9\u30b9(derived)\u306e\u5909\u6570\u304c\u683c\u7d0d\u3055\u308c\u3066\u3044\u308b\u304c\u3001\r\n            derived\u306b\u5b9a\u7fa9\u3055\u308c\u3066\u3044\u308bRayDown()\u306f\u547c\u3079\u306a\u3044\r\n            \u3064\u307e\u308a\u547c\u3079\u308b\u30e1\u30bd\u30c3\u30c9\u306f\u5909\u6570\u306e\u578b(\u9759\u7684\u306a\u578b)\u306b\u3088\u3063\u3066\u6c7a\u307e\u308b\u3002*\/\r\n\r\n            \/\/ virtual,override\u3092\u4ed8\u3051\u308b\u3068\u52d5\u7684\u306a\u578b\u3067\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3079\u308b\u3002\r\n\r\n            Console.ReadKey();\r\n        }\r\n    }\r\n    class Base\r\n    {\r\n        internal void jump()\r\n        {\r\n            Console.WriteLine(\"this is base\");\r\n        }\r\n    }\r\n    class derived: Base\r\n    {\r\n        \/\/ jump\u306foverride\u3055\u308c\u3066\u3044\u308b\u3002\r\n        internal void jump()\r\n        {\r\n            Console.WriteLine(\"this is derived\");\r\n        }\r\n        internal void RayDown()\r\n        {\r\n            Console.WriteLine(\"Ray Down\");\r\n        }\r\n    }\r\n}\r\n<\/pre>\n<p>\u30a2\u30c3\u30d7\u30ad\u30e3\u30b9\u30c8\u306f\u554f\u984c\u306a\u3044\u3002\u30c0\u30a6\u30f3\u30ad\u30e3\u30b9\u30c8\u306f\u660e\u793a\u30ad\u30e3\u30b9\u30c8\u304c\u5fc5\u8981\u3002<\/p>\n<div id=\"crayon-589030ab2cc56911003536-27\" class=\"crayon-line\"><span class=\"crayon-c\">\u30c0\u30a6\u30f3\u30ad\u30e3\u30b9\u30c8\u306e\u5909\u63db\u306f\u30ad\u30e3\u30b9\u30c8\u5143\u306e\u5909\u6570\u304c<\/span><span class=\"crayon-c\">\u4fdd\u6301\u3057\u3066\u3044\u308b\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u30ad\u30e3\u30b9\u30c8\u5148\u306e\u30af\u30e9\u30b9\u3068\u540c\u3058\u306e\u5fc5\u8981\u304c\u3042\u308b\u3002<\/span><span class=\"crayon-c\">\u901a\u5e38\u3001\u30a2\u30c3\u30d7\u30ad\u30e3\u30b9\u30c8\u3057\u3066\u623b\u3059\u3068\u304d\u306b\u30c0\u30a6\u30f3\u30ad\u30e3\u30b9\u30c8\u304c\u767a\u751f\u3059\u308b\u3002<\/span><\/div>\n<div class=\"crayon-line\"><\/div>\n<p>virtual-override\u304c\u306a\u304f\u3066\u3082\u57fa\u5e95\u30af\u30e9\u30b9\u3067\u306e\u5b9a\u7fa9\u3055\u308c\u305f\u30e1\u30bd\u30c3\u30c9\u306f\u6d3e\u751f\u30af\u30e9\u30b9\u3067\u4e0a\u66f8(\u96a0\u853d)\u304d\u3067\u304d\u308b\u3002\u305f\u3060\u30b3\u30f3\u30d1\u30a4\u30e9\u304c\u8b66\u544a\u306f\u51fa\u3059\u3002\u305d\u306e\u72b6\u614b\u3060\u3068\u5909\u6570\u306e\u578b\u3067\u547c\u3073\u51fa\u3055\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u304c\u6c7a\u307e\u308b\u3002virtual\u3060\u3051\u4ed8\u3051\u3066override\u3092\u4ed8\u3051\u306a\u3044\u3068\u540c\u3058\u304f\u5909\u6570\u306e\u578b\u3067\u547c\u3073\u51fa\u3059\u3002virtual-override\u304c\u3064\u3044\u3066\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u578b\u3067\u547c\u3073\u51fa\u3059\u3002\u6d3e\u751f\u30af\u30e9\u30b9\u3067override\u3060\u3051\u4ed8\u3051\u3066virtual\u304c\u306a\u3044\u3068\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3002<\/p>\n<p>virtual-override\u3055\u308c\u308b\u3068\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u578b\u3067\u547c\u3070\u308c\u308b\u30e1\u30bd\u30c3\u30c9\u304c\u6c7a\u307e\u308b\u3002<\/p>\n<pre class=\"lang:c# decode:true \">using System;\r\n\r\nnamespace ConsoleApplication1\r\n{\r\n    class Program\r\n    {\r\n        static void Main(string[] args)\r\n        {\r\n            \/\/ \u30a2\u30c3\u30d7\u30ad\u30e3\u30b9\u30c8\uff1a\u3000\u57fa\u5e95\u30af\u30e9\u30b9\u306e\u5909\u6570\u306b\u6d3e\u751f\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u683c\u7d0d\r\n            \/\/ \u30c0\u30a6\u30f3\u30ad\u30e3\u30b9\u30c8\uff1a\u3000\u6d3e\u751f\u30af\u30e9\u30b9\u306e\u5909\u6570\u306b\u57fa\u5e95\u30af\u30e9\u30b9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u683c\u7d0d\r\n            Base a = new Base();\r\n\r\n            Base b = new derived(); \/\/ \u30a2\u30c3\u30d7\u30ad\u30e3\u30b9\u30c8\r\n\r\n            \/\/ --------------------------------------------------------\r\n            \/\/ \u4ee5\u4e0b\u30c0\u30a6\u30f3\u30ad\u30e3\u30b9\u30c8\r\n\r\n            \/\/ derived c = (derived)new Base(); \u3053\u308c\u306f\u30ad\u30e3\u30b9\u30c8\u30a8\u30e9\u30fc\u3002\r\n            \r\n            \/* Base tmp = new Base();\r\n            derived c = new derived();\r\n            c = (derived)tmp; \u3053\u308c\u306f\u30ad\u30e3\u30b9\u30c8\u30a8\u30e9\u30fc\u3002 *\/\r\n            \r\n            derived c = new Base() as derived;\r\n            \/\/ \u30ad\u30e3\u30b9\u30c8\u30a8\u30e9\u30fc\u306b\u306f\u306a\u3089\u306a\u3044\u3051\u3069\u3001c\u306fnull\u306b\u306a\u3063\u3066\u3044\u308b\u3002\r\n\r\n            \/* \u30c0\u30a6\u30f3\u30ad\u30e3\u30b9\u30c8\u306e\u5909\u63db\u306f\u30ad\u30e3\u30b9\u30c8\u5143\u306e\u5909\u6570\u304c\r\n            \u4fdd\u6301\u3057\u3066\u3044\u308b\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u304c\u30ad\u30e3\u30b9\u30c8\u5148\u306e\u30af\u30e9\u30b9\u3068\u540c\u3058\u306e\u5fc5\u8981\u304c\u3042\u308b\u3002\r\n            \u901a\u5e38\u3001\u30a2\u30c3\u30d7\u30ad\u30e3\u30b9\u30c8\u3057\u3066\u623b\u3059\u3068\u304d\u306b\u30c0\u30a6\u30f3\u30ad\u30e3\u30b9\u30c8\u304c\u767a\u751f\u3059\u308b\u3002 *\/\r\n\r\n            derived d = new derived();\r\n\r\n            \/\/ --------------------------------------------------------\r\n            \/\/ \u30e1\u30bd\u30c3\u30c9\u547c\u3073\u51fa\u3057\r\n\r\n            a.jump(); \/\/ this is base \r\n            b.jump(); \/\/ this is derived\r\n            \/\/c.jump();\r\n            d.jump(); \/\/ this is derived\r\n\r\n            \/* virtula-override\u3092\u4ed8\u3051\u308b\u3068\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u578b\u3067\r\n            \u547c\u3073\u51fa\u3059\u30e1\u30bd\u30c3\u30c9\u304c\u6c7a\u307e\u308b\u3002\r\n            virtual-override\u304c\u7121\u3044\u3068b\u306fbase\u3068\u306a\u308b\u304c\u3001\u4eca\u56de\u306f\r\n            \u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u306e\u578b\u306a\u306e\u3067\u3001derived\u3068\u306a\u308b\u3002\r\n            *\/\r\n            \r\n            Console.ReadKey();\r\n        }\r\n    }\r\n    class Base\r\n    {\r\n        public virtual void jump()\r\n        {\r\n            Console.WriteLine(\"this is base\");\r\n        }\r\n        \r\n    }\r\n    class derived: Base\r\n    {\r\n        \r\n        public override void jump()\r\n        {\r\n            Console.WriteLine(\"this is derived\");\r\n        }\r\n        \r\n    }\r\n}\r\n<\/pre>\n<h2>\u30e1\u30bd\u30c3\u30c9\u306e\u30b7\u30b0\u30cd\u30c1\u30e3<\/h2>\n<p>\u30e1\u30bd\u30c3\u30c9\u540d\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u6570\u3001\u9806\u5e8f\u3001\u578b<br \/>\nCLR\u3067\u306f\u623b\u308a\u5024\u306e\u578b\u3092\u30b7\u30b0\u30cd\u30c1\u30e3\u306b\u542b\u3081\u3066\u3044\u308b\u306e\u3067C#\/VB\u3068\u306f\u9055\u3046\u3002<\/p>\n<pre class=\"lang:c# decode:true\">        string sample()\r\n        {\r\n            return \"\";\r\n        }\r\n        int sample() \/\/\u540c\u3058\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u578b\u3067\u65e2\u306b\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002\r\n        {\r\n            return 0;\r\n        }\r\n        string sample1(string tmp)\r\n        {\r\n            return \"\";\r\n        }\r\n        string sample1(int tmp)\r\n        {\r\n            return \"\";\r\n        }<\/pre>\n","protected":false},"excerpt":{"rendered":"<p>\u30dd\u30ea\u30e2\u30fc\u30d5\u30a3\u30ba\u30e0 using System; namespace ConsoleApplication1 { class Program { static void Main(string[] args) { \/\/ \u5909\u6570 &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/appbay.org\/?p=846\" class=\"more-link\"><span class=\"screen-reader-text\">&#8220;C# \u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u6307\u5411 \u57fa\u790e\u77e5\u8b58&#8221; \u306e<\/span>\u7d9a\u304d\u3092\u8aad\u3080<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[9,144],"class_list":["post-846","post","type-post","status-publish","format-standard","hentry","category-1","tag-c-net","tag-144"],"_links":{"self":[{"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts\/846","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=846"}],"version-history":[{"count":10,"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts\/846\/revisions"}],"predecessor-version":[{"id":2318,"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts\/846\/revisions\/2318"}],"wp:attachment":[{"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=846"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}