{"id":3595,"date":"2020-08-05T22:21:08","date_gmt":"2020-08-05T13:21:08","guid":{"rendered":"https:\/\/okamurax.com\/?p=3595"},"modified":"2020-08-12T15:29:25","modified_gmt":"2020-08-12T06:29:25","slug":"c-ienumerable-ienumerator-%e3%83%a1%e3%83%a2","status":"publish","type":"post","link":"https:\/\/appbay.org\/?p=3595","title":{"rendered":"C# IEnumerable\/IEnumerator \u30e1\u30e2"},"content":{"rendered":"<pre class=\"lang:c# decode:true\">    public partial class Form1 : Form\r\n    {\r\n        public Form1()\r\n        {\r\n            InitializeComponent();\r\n\r\n            \/\/ IEnumerable\r\n            \/\/ GetEnumerator()\u306e\u8fd4\u5024\u306fIEnumerator\r\n            \/\/ \u53cd\u5fa9\u5b50\u304c\u4f7f\u3048\u308b\r\n\r\n            \/\/ IEnumerator\r\n            \/\/ Current, MoveNext(), Reset()\r\n\r\n            var test = new Test(new string[] { \"a\", \"b\", \"c\" });\r\n            foreach (var t in test)\r\n            {\r\n                MessageBox.Show(t); \/\/ a, b, c\r\n            }\r\n        }\r\n    }\r\n\r\n    public class Test : IEnumerable&lt;string&gt;\r\n    {\r\n        private string[] stringList;\r\n\r\n        public Test(string[] s)\r\n        {\r\n            stringList = s;\r\n        }\r\n\r\n        public IEnumerator&lt;string&gt; GetEnumerator()\r\n        {\r\n            return new MyEnumerator(stringList); \r\n            \/\/ \u3053\u3061\u3089\u304c\u547c\u3070\u308c\u3066\u3044\u308b\r\n        }\r\n\r\n        IEnumerator IEnumerable.GetEnumerator()\r\n        {\r\n            return this.GetEnumerator();\r\n            \/\/ \u3053\u3061\u3089\u306f\u547c\u3070\u308c\u306a\u3044\r\n            \/\/ IEnumerator&lt;T&gt;\u304cIEnumerator\u3092\u7d99\u627f\u3057\u3066\u3044\u308b\u305f\u3081\u4e21\u65b9\u306eGetEnumerator\u304c\u5fc5\u8981\r\n        }\r\n    }\r\n\r\n    public class MyEnumerator: IEnumerator&lt;string&gt;\r\n    {\r\n        int p = -1;\r\n        string[] stringList;\r\n\r\n        public MyEnumerator(string[] s)\r\n        {\r\n            stringList = s;\r\n        }\r\n\r\n        string IEnumerator&lt;string&gt;.Current\r\n        {\r\n            get\r\n            {\r\n                return stringList[p];\r\n            }\r\n        }\r\n\r\n        object IEnumerator.Current\r\n        {\r\n            get\r\n            {\r\n                return stringList[p];\r\n            }\r\n        }\r\n\r\n        void IDisposable.Dispose()\r\n        {\r\n\r\n        }\r\n\r\n        bool IEnumerator.MoveNext()\r\n        {\r\n            p++;\r\n            if (p &gt;= stringList.Length)\r\n            {\r\n                return false;\r\n            }\r\n            return true;\r\n        }\r\n\r\n        void IEnumerator.Reset()\r\n        {\r\n            p = -1;\r\n        }\r\n    }<\/pre>\n<p>C#2.0\u304b\u3089\u30a4\u30c6\u30ec\u30fc\u30bf\u69cb\u6587\u304c\u5c0e\u5165\u3055\u308c\u7c21\u5358\u306b\u5b9f\u88c5\u3067\u304d\u308b\u3088\u3046\u306a\u3063\u305f\u3002<\/p>\n<p>\u623b\u308a\u5024\u306f\u3001IEnumerable\u3092\u8fd4\u3059\u5fc5\u8981\u304c\u3042\u308b\u3002<\/p>\n<p>yield return\u306f\u51e6\u7406\u3092\u7d99\u7d9a\u3001yield break\u306f\u305d\u3053\u3067\u51e6\u7406\u304c\u7d42\u4e86\u3059\u308b\u3002<\/p>\n<pre class=\"lang:c# decode:true \">    public partial class Form1 : Form\r\n    {\r\n        public Form1()\r\n        {\r\n            InitializeComponent();\r\n\r\n            foreach (var s in TestMethod())\r\n            {\r\n                MessageBox.Show(s);\r\n            }\r\n        }\r\n\r\n        public IEnumerable&lt;string&gt; TestMethod()\r\n        {\r\n            yield return \"Hello\";\r\n            yield return \"World\";\r\n        }\r\n    }<\/pre>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>public partial class Form1 : Form { public Form1() { InitializeComponent(); \/\/ IEnumerable \/\/ GetEnumerator()\u306e &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/appbay.org\/?p=3595\" class=\"more-link\"><span class=\"screen-reader-text\">&#8220;C# IEnumerable\/IEnumerator \u30e1\u30e2&#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],"class_list":["post-3595","post","type-post","status-publish","format-standard","hentry","category-1","tag-c-net"],"_links":{"self":[{"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts\/3595","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=3595"}],"version-history":[{"count":2,"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts\/3595\/revisions"}],"predecessor-version":[{"id":3615,"href":"https:\/\/appbay.org\/index.php?rest_route=\/wp\/v2\/posts\/3595\/revisions\/3615"}],"wp:attachment":[{"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3595"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3595"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/appbay.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3595"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}