{"id":3990,"date":"2023-06-16T01:51:12","date_gmt":"2023-06-15T17:51:12","guid":{"rendered":"https:\/\/lonelinerd.com\/?p=3990"},"modified":"2024-03-30T00:02:11","modified_gmt":"2024-03-29T16:02:11","slug":"enumerator","status":"publish","type":"post","link":"https:\/\/lonelinerd.com\/index.php\/2023\/06\/16\/enumerator\/","title":{"rendered":"C#\u7b46\u8a18 \u2013 \u8fed\u4ee3\u5668"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"3990\" class=\"elementor elementor-3990\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-baa789e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"baa789e\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-b28f137\" data-id=\"b28f137\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2a0a63f elementor-widget elementor-widget-text-editor\" data-id=\"2a0a63f\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline md-expand\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u8fed\u4ee3\u5668\u6a21\u5f0f<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u901a\u904eIEnumerator\u548cIEnumerable\u63a5\u53e3\u4ee5\u53ca\u5b83\u5011\u7684\u6cdb\u578b\u7b49\u50f9\u7269\u4f86\u5c01\u88dd\u7684<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5982\u679c\u67d0\u500b\u985e\u578b\u5be6\u73fe\u4e86IEnumerable\u63a5\u53e3\uff0c\u5c31\u4ee3\u8868\u5b83\u662f\u53ef\u8fed\u4ee3\u7684<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u8abf\u7528GetIEnumerator\u65b9\u6cd5\u5c07\u8fd4\u56deIEnumerator\u7684\u5be6\u73fe\uff08\u8fed\u4ee3\u5668\u672c\u8eab\uff09<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u53ef\u4ee5\u628a\u8fed\u4ee3\u5668\u60f3\u8c61\u6210\u6578\u64da\u5eab\u7684\u6e38\u6a19\uff0c\u8fed\u4ee3\u5668\u53ea\u80fd\u5728\u5e8f\u5217\u4e2d\u5411\u524d\u79fb\u52d5\uff0c\u800c\u4e14\u5c0d\u65bc\u540c\u4e00\u5e8f\u5217\u53ef\u80fd\u540c\u6642\u5b58\u5728\u591a\u500b\u8fed\u4ee3\u5668\u64cd\u4f5c<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u8fed\u4ee3\u5668\u6a21\u5f0f\u4e00\u500b\u91cd\u8981\u65b9\u9762\u662f\uff0c<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u4e0d\u7528\u4e00\u6b21\u8fd4\u56de\u6240\u6709\u6578\u64da\u2014\u2014\u8abf\u7528\u4ee3\u78bc\u4e00\u6b21\u53ea\u9700\u7372\u53d6\u4e00\u500b\u5143\u7d20\u3002<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u610f\u5473\u8457\u6211\u5011\u9700\u8981\u78ba\u5b9a\u8a2a\u554f\u5230\u4e86\u6578\u7d44\u7684\u54ea\u500b\u4f4d\u7f6e\uff0c\u56e0\u6b64\u9700\u8981\u4e00\u500b<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u300c\u72c0\u614b\u503c\u300d<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">foreach\u8a9e\u53e5\u5be6\u73fe\u4e86\u8a2a\u554f\u8fed\u4ee3\u5668\u7684\u652f\u6301\u3002foreach\u8a9e\u53e5\u88ab\u7de8\u8b6f\u5f8c\u6703\u8abf\u7528GetIEnumerator\u65b9\u6cd5\u3001Current\u5c6c\u6027\u3001MoveNext\u65b9\u6cd5\uff0c\u5047\u5982IDisposable\u4e5f\u5be6\u73fe\u4e86\uff0c\u7a0b\u5e8f\u6700\u5f8c\u9084\u6703\u81ea\u52d5\u92b7\u6bc0\u8fed\u4ee3\u5668\u5c0d\u8c61<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<pre class=\"md-fences md-end-block ty-contain-cm modeLoaded\" lang=\"c#\" spellcheck=\"false\"><span role=\"presentation\"><span class=\"cm-comment\">\/\/C# \u4ee3\u78bc<\/span><\/span><br><span role=\"presentation\"><span class=\"cm-variable\">List<\/span><span class=\"cm-operator\">&lt;<\/span><span class=\"cm-variable-3\">int<\/span><span class=\"cm-operator\">&gt;<\/span> <span class=\"cm-variable\">testForeach<\/span> <span class=\"cm-operator\">=<\/span> <span class=\"cm-keyword\">new<\/span> <span class=\"cm-variable\">List<\/span><span class=\"cm-operator\">&lt;<\/span><span class=\"cm-variable-3\">int<\/span><span class=\"cm-operator\">&gt;<\/span> { <span class=\"cm-number\">5<\/span>, <span class=\"cm-number\">8<\/span>, <span class=\"cm-number\">2<\/span>, <span class=\"cm-number\">3<\/span>, <span class=\"cm-number\">5<\/span> };<\/span><br><span role=\"presentation\"><span class=\"cm-keyword\">foreach<\/span> (<span class=\"cm-keyword\">var<\/span> <span class=\"cm-def\">i<\/span> <span class=\"cm-keyword\">in<\/span> <span class=\"cm-variable\">testForeach<\/span>)<\/span><br><span role=\"presentation\">{<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">Console<\/span>.<span class=\"cm-variable\">WriteLine<\/span>(<span class=\"cm-variable\">i<\/span>);<\/span><br><span role=\"presentation\">}<\/span><\/pre>\n<pre class=\"md-fences md-end-block ty-contain-cm modeLoaded\" lang=\"c#\" spellcheck=\"false\"><span role=\"presentation\"><span class=\"cm-comment\">\/\/IL \u4ee3\u78bc<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0030<\/span>: &nbsp;<span class=\"cm-variable\">ldloc<\/span>.<span class=\"cm-number\">0<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0031<\/span>: &nbsp;<span class=\"cm-variable\">callvirt<\/span> &nbsp; <span class=\"cm-variable\">instance<\/span> <span class=\"cm-variable\">valuetype<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">Generic<\/span>.<span class=\"cm-variable\">List`1<\/span><span class=\"cm-operator\">\/<\/span><span class=\"cm-variable\">Enumerator<\/span><span class=\"cm-operator\">&lt;!<\/span><span class=\"cm-number\">0<\/span><span class=\"cm-operator\">&gt;<\/span> <span class=\"cm-keyword\">class<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">Generic<\/span>.<span class=\"cm-variable\">List`1<\/span><span class=\"cm-operator\">&lt;<\/span><span class=\"cm-variable\">int32<\/span><span class=\"cm-operator\">&gt;<\/span>::<span class=\"cm-variable\">GetEnumerator<\/span>() <span class=\"cm-comment\">\/\/\u8abf\u7528Get IEnumerator<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0036<\/span>: &nbsp;<span class=\"cm-variable\">stloc<\/span>.<span class=\"cm-number\">1<\/span><\/span><br><span role=\"presentation\">  .<span class=\"cm-keyword\">try<\/span><\/span><br><span role=\"presentation\">  {<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0037<\/span>: &nbsp;<span class=\"cm-variable\">br<\/span>.<span class=\"cm-variable\">s<\/span> &nbsp; &nbsp; &nbsp; <span class=\"cm-variable\">IL_004a<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0039<\/span>: &nbsp;<span class=\"cm-variable\">ldloca<\/span>.<span class=\"cm-variable\">s<\/span> &nbsp; <span class=\"cm-variable\">V_1<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_003b<\/span>: &nbsp;<span class=\"cm-variable\">call<\/span> &nbsp; &nbsp; &nbsp; <span class=\"cm-variable\">instance<\/span> <span class=\"cm-operator\">!<\/span><span class=\"cm-number\">0<\/span> <span class=\"cm-variable\">valuetype<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">Generic<\/span>.<span class=\"cm-variable\">List`1<\/span><span class=\"cm-operator\">\/<\/span><span class=\"cm-variable\">Enumerator<\/span><span class=\"cm-operator\">&lt;<\/span><span class=\"cm-variable\">int32<\/span><span class=\"cm-operator\">&gt;<\/span>::<span class=\"cm-variable\">get_Current<\/span>() <span class=\"cm-comment\">\/\/\u8abf\u7528Current\u5c6c\u6027<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0040<\/span>: &nbsp;<span class=\"cm-variable\">stloc<\/span>.<span class=\"cm-number\">2<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0041<\/span>: &nbsp;<span class=\"cm-variable\">nop<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0042<\/span>: &nbsp;<span class=\"cm-variable\">ldloc<\/span>.<span class=\"cm-number\">2<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0043<\/span>: &nbsp;<span class=\"cm-variable\">call<\/span> &nbsp; &nbsp; &nbsp; <span class=\"cm-keyword\">void<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Console<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Console<\/span>::<span class=\"cm-variable\">WriteLine<\/span>(<span class=\"cm-variable\">int32<\/span>)<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0048<\/span>: &nbsp;<span class=\"cm-variable\">nop<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0049<\/span>: &nbsp;<span class=\"cm-variable\">nop<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_004a<\/span>: &nbsp;<span class=\"cm-variable\">ldloca<\/span>.<span class=\"cm-variable\">s<\/span> &nbsp; <span class=\"cm-variable\">V_1<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_004c<\/span>: &nbsp;<span class=\"cm-variable\">call<\/span> &nbsp; &nbsp; &nbsp; <span class=\"cm-variable\">instance<\/span> <span class=\"cm-variable-3\">bool<\/span> <span class=\"cm-variable\">valuetype<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">Generic<\/span>.<span class=\"cm-variable\">List`1<\/span><span class=\"cm-operator\">\/<\/span><span class=\"cm-variable\">Enumerator<\/span><span class=\"cm-operator\">&lt;<\/span><span class=\"cm-variable\">int32<\/span><span class=\"cm-operator\">&gt;<\/span>::<span class=\"cm-variable\">MoveNext<\/span>() <span class=\"cm-comment\">\/\/\u8abf\u7528MoveNext\u65b9\u6cd5<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0051<\/span>: &nbsp;<span class=\"cm-variable\">brtrue<\/span>.<span class=\"cm-variable\">s<\/span> &nbsp; <span class=\"cm-variable\">IL_0039<\/span> <span class=\"cm-comment\">\/\/MoveNext == true\uff0c\u56de\u5230 IL_0039<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0053<\/span>: &nbsp;<span class=\"cm-variable\">leave<\/span>.<span class=\"cm-variable\">s<\/span> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0064<\/span> <span class=\"cm-comment\">\/\/MoveNext == false\uff0c\u9000\u51fa\u81f3 IL_0064<\/span><\/span><br><span role=\"presentation\">  } &nbsp;<span class=\"cm-comment\">\/\/ end .try<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-keyword\">finally<\/span><\/span><br><span role=\"presentation\">  {<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0055<\/span>: &nbsp;<span class=\"cm-variable\">ldloca<\/span>.<span class=\"cm-variable\">s<\/span> &nbsp; <span class=\"cm-variable\">V_1<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0057<\/span>: &nbsp;<span class=\"cm-variable\">constrained<\/span>. <span class=\"cm-variable\">valuetype<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">Generic<\/span>.<span class=\"cm-variable\">List`1<\/span><span class=\"cm-operator\">\/<\/span><span class=\"cm-variable\">Enumerator<\/span><span class=\"cm-operator\">&lt;<\/span><span class=\"cm-variable\">int32<\/span><span class=\"cm-operator\">&gt;<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_005d<\/span>: &nbsp;<span class=\"cm-variable\">callvirt<\/span> &nbsp; <span class=\"cm-variable\">instance<\/span> <span class=\"cm-keyword\">void<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Runtime<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">IDisposable<\/span>::<span class=\"cm-variable\">Dispose<\/span>() <span class=\"cm-comment\">\/\/Dispose\u8fed\u4ee3\u5668<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0062<\/span>: &nbsp;<span class=\"cm-variable\">nop<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0063<\/span>: &nbsp;<span class=\"cm-variable\">endfinally<\/span><\/span><br><span role=\"presentation\">  } &nbsp;<span class=\"cm-comment\">\/\/ end handler<\/span><\/span><\/pre>\n<h5 class=\"md-end-block md-heading\"><strong><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">yield \u8207\u8fed\u4ee3\u5668<\/span><\/span><\/span><\/strong><\/h5>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u53ea\u8981\u985e\u5be6\u73fe\u4e86IEnumerable\u63a5\u53e3\uff0c\u90a3\u5c31\u4ee3\u8868\u5b83\u662f\u53ef\u8fed\u4ee3\u7684\uff0c\u4e26\u5b58\u5728\u4e00\u500bGetIEnumerator\u65b9\u6cd5\u4f86\u8fd4\u56de\u4e00\u500bIEnumerator\u63a5\u53e3<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u53ea\u80fd\u4f7f\u7528\u8fed\u4ee3\u5668\u584a\u4f86\u5be6\u73fe\u8fd4\u56de\u985e\u578b\u70baIEnumerable, IEnumerator\u6216\u6cdb\u578b\u7b49\u50f9\u7269\u7684\u65b9\u6cd5\/\u5c6c\u6027<\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u4e0d\u80fd\u5728\u533f\u540d\u65b9\u6cd5\u4e2d\u4f7f\u7528\u8fed\u4ee3\u5668\u4ee3\u78bc\u584a<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u901a\u904e\u9019\u500bEnumerator\u4e2d\u7684<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">MoveNext()<\/span><\/span><\/span><span class=\"md-plain\">\u4f86\u904d\u6b77\u6578\u64da<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<pre class=\"md-fences md-end-block ty-contain-cm modeLoaded\" lang=\"c#\" spellcheck=\"false\"><span role=\"presentation\"><span class=\"cm-keyword\">public<\/span> <span class=\"cm-variable\">IEnumerator<\/span> <span class=\"cm-def\">GetEnumerator<\/span>()<\/span><br><span role=\"presentation\">{<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-keyword\">for<\/span>(<span class=\"cm-variable-3\">int<\/span> <span class=\"cm-variable\">index<\/span> <span class=\"cm-operator\">=<\/span> <span class=\"cm-number\">0<\/span>; <span class=\"cm-variable\">index<\/span> <span class=\"cm-operator\">&lt;<\/span> <span class=\"cm-variable\">values<\/span>.<span class=\"cm-variable\">Length<\/span>; <span class=\"cm-variable\">index<\/span><span class=\"cm-operator\">++<\/span>)<\/span><br><span role=\"presentation\"> &nbsp;  {<\/span><br><span role=\"presentation\"> &nbsp; &nbsp; &nbsp; &nbsp;<span class=\"cm-keyword\">yield<\/span> <span class=\"cm-keyword\">return<\/span> <span class=\"cm-variable\">values<\/span>[(<span class=\"cm-variable\">index<\/span> <span class=\"cm-operator\">+<\/span> <span class=\"cm-variable\">startingPoint<\/span>) <span class=\"cm-operator\">%<\/span> <span class=\"cm-variable\">values<\/span>.<span class=\"cm-variable\">Length<\/span>];<\/span><br><span role=\"presentation\"> &nbsp;  }<\/span><br><span role=\"presentation\">}<\/span><\/pre>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">yield return \u544a\u8a34C#\u7de8\u8b6f\u5668\u9019\u662f\u4e00\u500b\u5be6\u73fe\u8fed\u4ee3\u5668\u7684\u65b9\u6cd5<\/span><\/span><\/span><span class=\"md-plain\">\u800c\u4e0d\u662f\u666e\u901a\u65b9\u6cd5\u3002<\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u5982\u679c<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">GetIEnumerator\u8fd4\u56de\u7684\u662f\u4e00\u500b\u975e\u6cdb\u578b\u7684\u63a5\u53e3\uff0c\u90a3\u8fed\u4ee3\u5668\u584a\u7684\u751f\u6210\u985e\u578b\uff08yield type\uff09\u662fobject<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u5426\u5247\u5c31\u662f<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u6cdb\u578b\u63a5\u53e3\u7684\u985e\u578b\u53c3\u6578<\/span><\/span><\/span><span class=\"md-plain\">\uff08IEnumerator<\/span><span class=\"md-plain\"> =&gt; string\uff09<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">yield return\u7684<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u9650\u5236<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5982\u679c\u5b58\u5728\u4efb\u4f55catch\u4ee3\u78bc\uff0c\u5247\u4e0d\u80fd\u5728try\u4ee3\u78bc\u584a\u4e2d\u4f7f\u7528yield return<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5e76\u4e14\u5728finally\u4ee3\u78bc\u584a\u4e2d\u4e5f\u4e0d\u80fd\u4f7f\u7528 yield return \u6216 yield break<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u5728\u6211\u5011\u7de8\u5beb\u8fed\u4ee3\u5668\u584a\u6642\uff0c\u5118\u7ba1\u7de8\u5beb\u4e86\u4e00\u500b\u4f3c\u4e4e\u662f\u9806\u5e8f\u57f7\u884c\u7684\u65b9\u6cd5\uff0c\u4f46<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5be6\u969b\u4e0a\u662f\u8acb\u6c42\u7de8\u8b6f\u5668\u70ba\u4f60\u5275\u5efa\u4e86\u4e00\u500b\u72c0\u614b\u6a5f<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u7576\u7de8\u8b6f\u5668\u770b\u5230\u8fed\u4ee3\u5668\u584a\u6642\uff0c\u6703\u70ba\u72c0\u614b\u6a5f\u5275\u5efa\u4e00\u500b\u5d4c\u5957\u985e\u578b\uff0c\u4f86\u6b63\u78ba\u8a18\u9304\u584a\u4e2d\u7684\u4f4d\u7f6e\u4ee5\u53ca\u5c40\u90e8\u8b8a\u91cf\uff08\u5305\u62ec\u53c3\u6578\uff09\u7684\u503c\u3002<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u5be6\u73fe\u8fed\u4ee3\u5668\uff0c\u72c0\u614b\u6a5f\u7684\u5de5\u4f5c\uff1a<\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u5fc5\u9808<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5177\u6709\u67d0\u500b\u521d\u59cb\u72c0\u614b<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u6bcf\u6b21\u8abf\u7528MoveNext\u6642\uff0c\u5728\u63d0\u4f9b\u4e0b\u4e00\u500b\u503c\u4e4b\u524d\uff08\u57f7\u884c\u5230yield return\u8a9e\u53e5\u4e4b\u524d\uff09\uff0c\u5b83\u9700\u8981\u57f7\u884cGetEnumerator\u65b9\u6cd5\u4e2d\u7684\u4ee3\u78bc<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u53ea\u6709\u8abf\u7528\u4e86IEnumerable.GetIEnumerator.MoveNext\u5f8c\uff0c\u624d\u6703\u57f7\u884cIEnumerable\u88e1\u9762\u7684\u904d\u6b77<\/span><\/span><\/span><span class=\"md-plain\">\uff1b\u521d\u59cb\u5316\u662f\u4e0d\u6703\u57f7\u884c<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u4f7f\u7528Current\u5c6c\u6027\u6642\uff0c\u5b83\u5fc5\u9808\u8fd4\u56de\u6211\u5011\u751f\u6210\u7684\u4e0a\u4e00\u500b\u503c<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u6240\u6709\u5de5\u4f5c\u5728\u8abf\u7528MoveNext\u6642\u5c31\u5b8c\u6210\u4e86\uff0c\u7372\u53d6Current\u7684\u503c\u4e0d\u6703\u57f7\u884c\u4efb\u4f55\u4ee3\u78bc<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5728\u7b2c\u4e00\u6b21\u8abf\u7528MoveNext\u4e4b\u524d\uff0cCurrent\u5c6c\u6027\u7e3d\u662f\u8fd4\u56de\u8fed\u4ee3\u5668\u7522\u751f\u985e\u578b\u7684\u9ed8\u8a8d\u503c<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5728MoveNext\u8fd4\u56defalse\u4e4b\u5f8c\uff0cCurrent\u5c6c\u6027\u7e3d\u662f\u8fd4\u56de\u6700\u5f8c\u7684\u751f\u6210\u503c<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5b83\u5fc5\u9808\u77e5\u9053\u4f55\u6642\u5b8c\u6210\u751f\u6210\u503c\u7684\u64cd\u4f5c\uff0c\u4ee5\u4fbfMoveNext\u8fd4\u56defalse<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">yield return\u8a9e\u53e5\u53ea\u8868\u793a\u300c\u66ab\u6642\u5730\u9000\u51fa\u65b9\u6cd5\u300d<\/span><\/span><\/span><span class=\"md-plain\">\uff0c\u985e\u4f3c\u65bc\u300c\u66ab\u505c\u300d<\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5728yield return\u7684\u4f4d\u7f6e\uff0c\u4ee3\u78bc\u5c31\u505c\u6b62\u57f7\u884c\uff0c\u5728\u4e0b\u4e00\u6b21\u8abf\u7528MoveNext\u6642\u53c8\u7e7c\u7e8c\u57f7\u884c<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5728\u4e00\u500b\u65b9\u6cd5\u4e2d\u7684\u4e0d\u540c\u5730\u65b9\u53ef\u4ee5\u7de8\u5beb\u591a\u500byield return<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u56e0\u6b64\uff0c<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u4ee3\u78bc\u4e0d\u6703\u5728\u6700\u5f8c\u7684yield return\u8655\u7d50\u675f\uff0c\u800c\u662f\u901a\u904e\u8fd4\u56defalse\u7684MoveNext\u8abf\u7528\u4f86\u7d50\u675f\u65b9\u6cd5\u7684\u57f7\u884c<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5 class=\"md-end-block md-heading\"><strong><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5ef6\u9072\u57f7\u884c<\/span><\/span><\/span><\/strong><\/h5>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u8fed\u4ee3\u5668\u8fed\u4ee3\u6642\u4e0d\u6703\u771f\u7684\u69cb\u9020\u4e00\u500b\u542b\u6709\u300c\u5f9estart\u958b\u59cb\uff0c\u5171count\u500b\u300d\u7684\u6578\u5b57\u7684\u5217\u8868\uff0c<\/span><span style=\"font-style: inherit; font-weight: inherit;\">\u800c\u662f\u5728\u6070\u7576\u7684\u6642\u9593\u751f\u6210\u5c0d\u61c9\u7684\u90a3\u500b\u6578\u5b57<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u69cb\u9020\u7684\u8fed\u4ee3\u5668\u5be6\u4f8b\u53ea\u662f\u5c07\u6771\u897f\u6e96\u5099\u597d\uff0c\u4f7f\u6578\u64da\u80fd\u5728\u9069\u7576\u7684\u4f4d\u7f6e\u4ee5\u4e00\u7a2e&#8221;just-in-time&#8221;\u7684\u65b9\u5f0f\u63d0\u4f9b<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u7de9\u6c96\u548c\u6d41\u5f0f\u6280\u8853<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u6846\u67b6\u63d0\u4f9b\u7684\u64f4\u5c55\u65b9\u6cd5\u6703\u76e1\u91cf\u5617\u8a66\u5c0d\u6578\u64da\u9032\u884c<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u300c\u6d41\u5f0f\uff08stream\uff09\u300d\/\u300c\u7ba1\u9053\uff08pipe\uff09\u300d\u50b3\u8f38\u3002<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u8981\u6c42\u4e00\u500b\u8fed\u4ee3\u5668\u63d0\u4f9b\u4e0b\u4e00\u500b\u5143\u7d20\u6642\uff0c\u6703\u5f9e\u93c8\u63a5\u7684\u8fed\u4ee3\u5668\u4e2d\u7372\u53d6\u4e00\u500b\u5143\u7d20\uff0c\u8655\u7406\u90a3\u500b\u5143\u7d20\u518d\u8fd4\u56de\u7b26\u5408\u8981\u6c42\u7684\u7d50\u679c\uff0c\u4e0d\u7528\u5360\u7528\u81ea\u5df2\u66f4\u591a\u7684\u7a7a\u9593<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u57f7\u884c<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u7c21\u55ae\u7684\u8f49\u63db\u548c\u904e\u6ffe\u6642\u975e\u5e38\u9ad8\u6548<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u4f46\u57f7\u884c\u53cd\u8f49\u6216\u6392\u5e8f\u7b49\u64cd\u4f5c\uff0c\u5c31\u7b49\u5982\u8981\u6c42\u6240\u6709\u6578\u64da\u90fd\u8655\u65bc\u53ef\u7528\u72c0\u614b\uff0c\u6240\u4ee5\u9700\u8981\u52a0\u8f09\u6240\u6709\u6578\u64da\u5230\u5167\u5b58\u4f86\u57f7\u884c\u6279\u8655\u7406<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline md-expand\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5ef6\u9072\u57f7\u884c\u8207\u7acb\u5373\u57f7\u884c<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">Reference\uff1a<\/span><span class=\"md-link md-pair-s\" spellcheck=\"false\"><a href=\"https:\/\/stackoverflow.com\/questions\/2515796\/deferred-execution-and-eager-evaluation\" target=\"_blank\" rel=\"noopener\">https:\/\/stackoverflow.com\/questions\/2515796\/deferred-execution-and-eager-evaluation<\/a><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u8a2d\u6709\u4e00\u65b9\u6cd5<\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<pre class=\"md-fences md-end-block ty-contain-cm modeLoaded\" lang=\"c#\" spellcheck=\"false\"><span role=\"presentation\"><span class=\"cm-variable-3\">int<\/span> <span class=\"cm-def\">Computation<\/span>(<span class=\"cm-variable-3\">int<\/span> <span class=\"cm-variable\">index<\/span>)<\/span><\/pre>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u5ef6\u9072\u57f7\u884c\uff08deffered execution\uff09\u53ef\u5206\u70ba\u4ee5\u4e0b\u5169\u7a2e<\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u6d41\u5f0f\u50b3\u8f38 =&gt; \u60f0\u6027\u6c42\u503c\uff08lazy evaluation\uff09<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<pre class=\"md-fences md-end-block ty-contain-cm modeLoaded\" lang=\"c#\" spellcheck=\"false\"><span role=\"presentation\"><span class=\"cm-variable\">IEnumerable<\/span><span class=\"cm-operator\">&lt;<\/span><span class=\"cm-variable-3\">int<\/span><span class=\"cm-operator\">&gt;<\/span> <span class=\"cm-def\">GetComputation<\/span>(<span class=\"cm-variable-3\">int<\/span> <span class=\"cm-variable\">maxIndex<\/span>)<\/span><br><span role=\"presentation\">{<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-keyword\">for<\/span>(<span class=\"cm-variable-3\">int<\/span> <span class=\"cm-variable\">i<\/span> <span class=\"cm-operator\">=<\/span> <span class=\"cm-number\">0<\/span>; <span class=\"cm-variable\">i<\/span> <span class=\"cm-operator\">&lt;<\/span> <span class=\"cm-variable\">maxIndex<\/span>; <span class=\"cm-variable\">i<\/span><span class=\"cm-operator\">++<\/span>)<\/span><br><span role=\"presentation\"> &nbsp;  {<\/span><br><span role=\"presentation\"> &nbsp; &nbsp; &nbsp; &nbsp;<span class=\"cm-keyword\">yield<\/span> <span class=\"cm-keyword\">return<\/span> <span class=\"cm-variable\">Computation<\/span>(<span class=\"cm-variable\">i<\/span>);<\/span><br><span role=\"presentation\"> &nbsp;  }<\/span><br><span role=\"presentation\">}<\/span><\/pre>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u6bcf\u6b21\u8abf\u7528MoveNext\u624d\u6703\u8abf\u7528\u4e00\u6b21Computation(i)\uff0c\u5c07\u8fd4\u56de\u503c\u653e\u5230Current\u4e2d\uff0c\u7136\u5f8c\u8fd4\u56deCurrent<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u7de9\u6c96\u50b3\u8f38 =&gt; \u71b1\u60c5\u6c42\u503c\uff08eager evaluation\uff09<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<pre class=\"md-fences md-end-block ty-contain-cm modeLoaded\" lang=\"c#\" spellcheck=\"false\"><span role=\"presentation\"><span class=\"cm-variable\">IEnumerable<\/span><span class=\"cm-operator\">&lt;<\/span><span class=\"cm-variable-3\">int<\/span><span class=\"cm-operator\">&gt;<\/span> <span class=\"cm-def\">GetComputation<\/span>(<span class=\"cm-variable-3\">int<\/span> <span class=\"cm-variable\">maxIndex<\/span>)<\/span><br><span role=\"presentation\">{<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-keyword\">var<\/span> <span class=\"cm-def\">result<\/span> <span class=\"cm-operator\">=<\/span> <span class=\"cm-keyword\">new<\/span> <span class=\"cm-variable-3\">int<\/span>[<span class=\"cm-variable\">maxIndex<\/span>];<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-keyword\">for<\/span>(<span class=\"cm-variable-3\">int<\/span> <span class=\"cm-variable\">i<\/span> <span class=\"cm-operator\">=<\/span> <span class=\"cm-number\">0<\/span>; <span class=\"cm-variable\">i<\/span> <span class=\"cm-operator\">&lt;<\/span> <span class=\"cm-variable\">maxIndex<\/span>; <span class=\"cm-variable\">i<\/span><span class=\"cm-operator\">++<\/span>)<\/span><br><span role=\"presentation\"> &nbsp;  {<\/span><br><span role=\"presentation\"> &nbsp; &nbsp; &nbsp; &nbsp;<span class=\"cm-variable\">result<\/span>[<span class=\"cm-variable\">i<\/span>] <span class=\"cm-operator\">=<\/span> <span class=\"cm-variable\">Computation<\/span>(<span class=\"cm-variable\">i<\/span>);<\/span><br><span role=\"presentation\"> &nbsp;  }<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-keyword\">foreach<\/span>(<span class=\"cm-keyword\">var<\/span> <span class=\"cm-keyword\">value<\/span> <span class=\"cm-keyword\">in<\/span> <span class=\"cm-variable\">result<\/span>)<\/span><br><span role=\"presentation\"> &nbsp;  {<\/span><br><span role=\"presentation\"> &nbsp; &nbsp; &nbsp; &nbsp;<span class=\"cm-keyword\">yield<\/span> <span class=\"cm-keyword\">return<\/span> <span class=\"cm-keyword\">value<\/span>;<\/span><br><span role=\"presentation\"> &nbsp;  }<\/span><br><span role=\"presentation\">}<\/span><\/pre>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u7b2c\u4e00\u6b21\u8abf\u7528MoveNext\u6642\uff0c\u5c31\u6703\u5b8c\u6210maxIndex\u6b21\u7684Computation(i)\u65b9\u6cd5\uff0c\u5c07\u7d50\u679c\u5b58\u5728result\u4e2d\uff0c\u4e26\u8fd4\u56de\u7b2c\u4e00\u500b\u5143\u7d20<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u96a8\u5f8c\u7684\u6bcf\u6b21MoveNext\uff0c\u5c07\u6703\u5f9earray\u4e2d\u53d6\u51fa\u4e0b\u4e00\u4f4d\u5143\u7d20\u4e26\u653e\u5230Current\u4e2d\u7136\u5f8c\u8fd4\u56de<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u7acb\u5373\u57f7\u884c\uff08immediately execution\uff09\uff0c\u76f8\u5c0d\u65bc\u5ef6\u9072\u57f7\u884c<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<pre class=\"md-fences md-end-block ty-contain-cm modeLoaded\" lang=\"c#\" spellcheck=\"false\"><span role=\"presentation\"><span class=\"cm-variable\">IEnumerable<\/span><span class=\"cm-operator\">&lt;<\/span><span class=\"cm-variable-3\">int<\/span><span class=\"cm-operator\">&gt;<\/span> <span class=\"cm-def\">GetComputation<\/span>(<span class=\"cm-variable-3\">int<\/span> <span class=\"cm-variable\">maxIndex<\/span>)<\/span><br><span role=\"presentation\">{<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-keyword\">var<\/span> <span class=\"cm-def\">result<\/span> <span class=\"cm-operator\">=<\/span> <span class=\"cm-keyword\">new<\/span> <span class=\"cm-variable-3\">int<\/span>[<span class=\"cm-variable\">maxIndex<\/span>];<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-keyword\">for<\/span>(<span class=\"cm-variable-3\">int<\/span> <span class=\"cm-variable\">i<\/span> <span class=\"cm-operator\">=<\/span> <span class=\"cm-number\">0<\/span>; <span class=\"cm-variable\">i<\/span> <span class=\"cm-operator\">&lt;<\/span> <span class=\"cm-variable\">maxIndex<\/span>; <span class=\"cm-variable\">i<\/span><span class=\"cm-operator\">++<\/span>)<\/span><br><span role=\"presentation\"> &nbsp;  {<\/span><br><span role=\"presentation\"> &nbsp; &nbsp; &nbsp; &nbsp;<span class=\"cm-variable\">result<\/span>[<span class=\"cm-variable\">i<\/span>] <span class=\"cm-operator\">=<\/span> <span class=\"cm-variable\">Computation<\/span>(<span class=\"cm-variable\">i<\/span>);<\/span><br><span role=\"presentation\"> &nbsp;  }<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-keyword\">return<\/span> <span class=\"cm-variable\">result<\/span>;<\/span><br><span role=\"presentation\">}<\/span><\/pre>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u6bcf\u6b21\u8abf\u7528MoveNext\u6642\uff0c\u6703\u5c07\u653e\u7f6e\u5728\u6578\u7d44\u4e2d\u7684\u4e0b\u4e00\u500b\u503c\u53d6\u51fa\uff0c\u653e\u5230Current\u4e2d\u7136\u5f8c\u8fd4\u56deCurrent<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u7e3d\u7d50<\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u7acb\u5373\u57f7\u884c\u4ee3\u8868\u7576\u65b9\u6cd5return\u7684\u6642\u5019\uff0c\u65b9\u6cd5\u88e1\u9762\u7684\u8a08\u7b97\/\u57f7\u884c\u80af\u5b9a\u5df2\u7d93\u5b8c\u6210<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5ef6\u9072\/\u71b1\u60c5\u6c42\u503c\u4ee3\u8868\u5927\u90e8\u5206\u7684\u5de5\u4f5c\u6703\u5728\u9996\u6b21MoveNext\u7684\u6642\u5019\u5b8c\u6210<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5ef6\u9072\/\u60f0\u6027\u6c42\u503c\u4ee3\u8868\u5de5\u4f5c\u6703\u5728\u6bcf\u6b21MoveNext\u8abf\u7528\u6642\u57f7\u884c\u4e00\u6b21<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h5 class=\"md-end-block md-heading\"><strong><span class=\"md-plain\">\u8fed\u4ee3\u5668\u7684\u7d42\u6b62<\/span><\/strong><\/h5>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">yield break<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">finally\u4ee3\u78bc\u584a<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u5167\u7f6e\u5728foreach\u7684IL\u4ee3\u78bc\u4e2d<\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<pre class=\"md-fences md-end-block ty-contain-cm modeLoaded\" lang=\"c#\" spellcheck=\"false\"><span role=\"presentation\"><span class=\"cm-variable\">IL_0001<\/span>: &nbsp;<span class=\"cm-variable\">call<\/span> &nbsp; &nbsp; &nbsp; <span class=\"cm-keyword\">class<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Runtime<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">Generic<\/span>.<span class=\"cm-variable\">IEnumerable`1<\/span><span class=\"cm-operator\">&lt;<\/span><span class=\"cm-variable\">int32<\/span><span class=\"cm-operator\">&gt;<\/span> <span class=\"cm-variable\">CSharpInDepth<\/span>.<span class=\"cm-variable\">Program<\/span>::<span class=\"cm-variable\">CreateEnumerable<\/span>()<\/span><br><span role=\"presentation\"><span class=\"cm-variable\">IL_0006<\/span>: &nbsp;<span class=\"cm-variable\">stloc<\/span>.<span class=\"cm-number\">0<\/span><\/span><br><span role=\"presentation\"><span class=\"cm-variable\">IL_0007<\/span>: &nbsp;<span class=\"cm-variable\">nop<\/span><\/span><br><span role=\"presentation\"><span class=\"cm-variable\">IL_0008<\/span>: &nbsp;<span class=\"cm-variable\">ldloc<\/span>.<span class=\"cm-number\">0<\/span><\/span><br><span role=\"presentation\"><span class=\"cm-variable\">IL_0009<\/span>: &nbsp;<span class=\"cm-variable\">callvirt<\/span> &nbsp; <span class=\"cm-variable\">instance<\/span> <span class=\"cm-keyword\">class<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Runtime<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">Generic<\/span>.<span class=\"cm-variable\">IEnumerator`1<\/span><span class=\"cm-operator\">&lt;!<\/span><span class=\"cm-number\">0<\/span><span class=\"cm-operator\">&gt;<\/span> <span class=\"cm-keyword\">class<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Runtime<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">Generic<\/span>.<span class=\"cm-variable\">IEnumerable`1<\/span><span class=\"cm-operator\">&lt;<\/span><span class=\"cm-variable\">int32<\/span><span class=\"cm-operator\">&gt;<\/span>::<span class=\"cm-variable\">GetEnumerator<\/span>()<\/span><br><span role=\"presentation\"><span class=\"cm-variable\">IL_000e<\/span>: &nbsp;<span class=\"cm-variable\">stloc<\/span>.<span class=\"cm-number\">1<\/span><\/span><br><span role=\"presentation\">.<span class=\"cm-keyword\">try<\/span><\/span><br><span role=\"presentation\">{<\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_000f<\/span>: &nbsp;<span class=\"cm-variable\">br<\/span>.<span class=\"cm-variable\">s<\/span> &nbsp; &nbsp; &nbsp; <span class=\"cm-variable\">IL_0021<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0011<\/span>: &nbsp;<span class=\"cm-variable\">ldloc<\/span>.<span class=\"cm-number\">1<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0012<\/span>: &nbsp;<span class=\"cm-variable\">callvirt<\/span> &nbsp; <span class=\"cm-variable\">instance<\/span> <span class=\"cm-operator\">!<\/span><span class=\"cm-number\">0<\/span> <span class=\"cm-keyword\">class<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Runtime<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">Generic<\/span>.<span class=\"cm-variable\">IEnumerator`1<\/span><span class=\"cm-operator\">&lt;<\/span><span class=\"cm-variable\">int32<\/span><span class=\"cm-operator\">&gt;<\/span>::<span class=\"cm-variable\">get_Current<\/span>()<\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0017<\/span>: &nbsp;<span class=\"cm-variable\">stloc<\/span>.<span class=\"cm-number\">2<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0018<\/span>: &nbsp;<span class=\"cm-variable\">nop<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0019<\/span>: &nbsp;<span class=\"cm-variable\">ldloc<\/span>.<span class=\"cm-number\">2<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_001a<\/span>: &nbsp;<span class=\"cm-variable\">call<\/span> &nbsp; &nbsp; &nbsp; <span class=\"cm-keyword\">void<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Console<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Console<\/span>::<span class=\"cm-variable\">WriteLine<\/span>(<span class=\"cm-variable\">int32<\/span>)<\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_001f<\/span>: &nbsp;<span class=\"cm-variable\">nop<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0020<\/span>: &nbsp;<span class=\"cm-variable\">nop<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0021<\/span>: &nbsp;<span class=\"cm-variable\">ldloc<\/span>.<span class=\"cm-number\">1<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0022<\/span>: &nbsp;<span class=\"cm-variable\">callvirt<\/span> &nbsp; <span class=\"cm-variable\">instance<\/span> <span class=\"cm-variable-3\">bool<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Runtime<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">IEnumerator<\/span>::<span class=\"cm-variable\">MoveNext<\/span>()<\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0027<\/span>: &nbsp;<span class=\"cm-variable\">brtrue<\/span>.<span class=\"cm-variable\">s<\/span> &nbsp; <span class=\"cm-variable\">IL_0011<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0029<\/span>: &nbsp;<span class=\"cm-variable\">leave<\/span>.<span class=\"cm-variable\">s<\/span> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0036<\/span><\/span><br><span role=\"presentation\">} &nbsp;<span class=\"cm-comment\">\/\/ end .try<\/span><\/span><br><span role=\"presentation\"><span class=\"cm-keyword\">finally<\/span><\/span><br><span role=\"presentation\">{<\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_002b<\/span>: &nbsp;<span class=\"cm-variable\">ldloc<\/span>.<span class=\"cm-number\">1<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_002c<\/span>: &nbsp;<span class=\"cm-variable\">brfalse<\/span>.<span class=\"cm-variable\">s<\/span> &nbsp;<span class=\"cm-variable\">IL_0035<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_002e<\/span>: &nbsp;<span class=\"cm-variable\">ldloc<\/span>.<span class=\"cm-number\">1<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_002f<\/span>: &nbsp;<span class=\"cm-variable\">callvirt<\/span> &nbsp; <span class=\"cm-variable\">instance<\/span> <span class=\"cm-keyword\">void<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Runtime<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">IDisposable<\/span>::<span class=\"cm-variable\">Dispose<\/span>()<\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0034<\/span>: &nbsp;<span class=\"cm-variable\">nop<\/span><\/span><br><span role=\"presentation\"> &nbsp;<span class=\"cm-variable\">IL_0035<\/span>: &nbsp;<span class=\"cm-variable\">endfinally<\/span><\/span><br><span role=\"presentation\">} &nbsp;<span class=\"cm-comment\">\/\/ end handler<\/span><\/span><\/pre>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u5728\u9047\u5230yield return\u6642\uff0c\u53ea\u662f\u66ab\u505c\u4e86\u65b9\u6cd5\uff0c\u56e0\u6b64\u4e0d\u6703\u57f7\u884cfinally\u88e1\u7684\u4ee3\u78bc<\/span><\/span><\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u800c\u9047\u5230yield break\u6642\uff0c\u9069\u7576\u7684finally\u4ee3\u78bc\u584a\u6703\u88ab\u57f7\u884c<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">finally\u5728\u8fed\u4ee3\u5668\u584a\u4e2d\u5e38\u7528\u65bc<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u91cb\u653e\u8cc7\u6e90\uff0c\u901a\u5e38\u8207using\u8a9e\u53e5\u914d\u5408\u4f7f\u7528<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u800c\u5047\u5982\u6211\u5011\u4e0d\u662f\u63d0\u524d\u505c\u6b62\u57f7\u884c\u8fed\u4ee3\u5668\u4ee3\u78bc\uff0c\u800c\u662f<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u63d0\u524d\u505c\u6b62\u4f7f\u7528\u8fed\u4ee3\u5668\uff0cfinally\u4ee3\u78bc\u584a\u88e1\u7684\u5167\u5bb9\u4e5f\u6703\u57f7\u884c<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">IL\u4ee3\u78bc\u4e2d\u4ecd\u7136\u6703\u51fa\u73fefinally\u584a<\/span><\/p>\n<\/li>\n<li class=\"md-list-item\">\n<pre class=\"md-fences md-end-block ty-contain-cm modeLoaded\" lang=\"c#\" spellcheck=\"false\"><span role=\"presentation\"><span class=\"cm-variable-3\">DateTime<\/span> <span class=\"cm-variable\">stop<\/span> <span class=\"cm-operator\">=<\/span> <span class=\"cm-variable-3\">DateTime<\/span>.<span class=\"cm-variable\">Now<\/span>.<span class=\"cm-variable\">AddSeconds<\/span>(<span class=\"cm-number\">2<\/span>);<\/span><br><span role=\"presentation\"><span class=\"cm-keyword\">foreach<\/span>(<span class=\"cm-variable-3\">int<\/span> <span class=\"cm-variable\">i<\/span> <span class=\"cm-keyword\">in<\/span> <span class=\"cm-variable\">CountWithTimeLimit<\/span>(<span class=\"cm-variable\">stop<\/span>))<\/span><br><span role=\"presentation\">{<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-keyword\">if<\/span>(<span class=\"cm-variable\">i<\/span> <span class=\"cm-operator\">&gt;<\/span> <span class=\"cm-number\">3<\/span>)<\/span><br><span role=\"presentation\"> &nbsp;  {<\/span><br><span role=\"presentation\"> &nbsp; &nbsp; &nbsp; &nbsp;<span class=\"cm-comment\">\/\/\u63d0\u524d\u505c\u6b62\u4f7f\u7528\u8fed\u4ee3\u5668<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp; &nbsp; &nbsp;<span class=\"cm-keyword\">return<\/span>;<\/span><br><span role=\"presentation\"> &nbsp;  }<\/span><br><span role=\"presentation\">}<\/span><\/pre>\n<\/li>\n<li class=\"md-list-item\">\n<pre class=\"md-fences md-end-block ty-contain-cm modeLoaded\" lang=\"c#\" spellcheck=\"false\"><span role=\"presentation\"><span class=\"cm-comment\">\/\/IL \u4ee3\u78bc<\/span><\/span><br><span role=\"presentation\"><span class=\"cm-keyword\">finally<\/span><\/span><br><span role=\"presentation\">{<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_002b<\/span>: &nbsp;<span class=\"cm-variable\">ldloc<\/span>.<span class=\"cm-number\">1<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_002c<\/span>: &nbsp;<span class=\"cm-variable\">brfalse<\/span>.<span class=\"cm-variable\">s<\/span> &nbsp;<span class=\"cm-variable\">IL_0035<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_002e<\/span>: &nbsp;<span class=\"cm-variable\">ldloc<\/span>.<span class=\"cm-number\">1<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_002f<\/span>: &nbsp;<span class=\"cm-variable\">callvirt<\/span> &nbsp; <span class=\"cm-variable\">instance<\/span> <span class=\"cm-keyword\">void<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Runtime<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">IDisposable<\/span>::<span class=\"cm-variable\">Dispose<\/span>()<\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0034<\/span>: &nbsp;<span class=\"cm-variable\">nop<\/span><\/span><br><span role=\"presentation\"> &nbsp; &nbsp;<span class=\"cm-variable\">IL_0035<\/span>: &nbsp;<span class=\"cm-variable\">endfinally<\/span><\/span><br><span role=\"presentation\">} &nbsp;<span class=\"cm-comment\">\/\/ end handler<\/span><\/span><\/pre>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u9019\u662f\u7531\u65bc<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">foreach\u6703\u5728\u5b83\u81ea\u5df1\u7684finally\u4ee3\u78bc\u584a\u4e2d\u8abf\u7528IEnumerator\u6240\u63d0\u4f9b\u7684Dispose\u65b9\u6cd5<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u53ea\u8981\u8abf\u7528\u8005\u4f7f\u7528\u4e86foreach\u5faa\u74b0\uff0c\u8fed\u4ee3\u5668\u584a\u4e2d\u7684finally\u5c31\u6703\u57f7\u884c<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u53cd\u4e4b\uff0c\u53ea\u8981\u6211\u5011\u4e0d\u901a\u904eforeach\uff0c\u800c\u662f<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u624b\u52d5\u8abf\u7528MoveNext\uff0cfinally\u5c31\u4e0d\u6703\u88ab\u89f8\u767c<\/span><\/span><\/span><\/p>\n<ul class=\"ul-list\" data-mark=\"-\">\n<li class=\"md-list-item\">\n<pre class=\"md-fences md-end-block ty-contain-cm modeLoaded\" lang=\"c#\" spellcheck=\"false\"><span role=\"presentation\"><span class=\"cm-variable\">IL_0008<\/span>: &nbsp;<span class=\"cm-variable\">callvirt<\/span> &nbsp; <span class=\"cm-variable\">instance<\/span> <span class=\"cm-keyword\">class<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Runtime<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">Generic<\/span>.<span class=\"cm-variable\">IEnumerator`1<\/span><span class=\"cm-operator\">&lt;!<\/span><span class=\"cm-number\">0<\/span><span class=\"cm-operator\">&gt;<\/span> <span class=\"cm-keyword\">class<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Runtime<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">Generic<\/span>.<span class=\"cm-variable\">IEnumerable`1<\/span><span class=\"cm-operator\">&lt;<\/span><span class=\"cm-variable\">int32<\/span><span class=\"cm-operator\">&gt;<\/span>::<span class=\"cm-variable\">GetEnumerator<\/span>()<\/span><br><span role=\"presentation\"><span class=\"cm-variable\">IL_000d<\/span>: &nbsp;<span class=\"cm-variable\">stloc<\/span>.<span class=\"cm-number\">1<\/span><\/span><br><span role=\"presentation\"><span class=\"cm-variable\">IL_000e<\/span>: &nbsp;<span class=\"cm-variable\">ldloc<\/span>.<span class=\"cm-number\">1<\/span><\/span><br><span role=\"presentation\"><span class=\"cm-variable\">IL_000f<\/span>: &nbsp;<span class=\"cm-variable\">callvirt<\/span> &nbsp; <span class=\"cm-variable\">instance<\/span> <span class=\"cm-variable-3\">bool<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Runtime<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">IEnumerator<\/span>::<span class=\"cm-variable\">MoveNext<\/span>()<\/span><br><span role=\"presentation\"><span class=\"cm-variable\">IL_0014<\/span>: &nbsp;<span class=\"cm-variable\">pop<\/span><\/span><br><span role=\"presentation\"><span class=\"cm-variable\">IL_0015<\/span>: &nbsp;<span class=\"cm-variable\">ldloc<\/span>.<span class=\"cm-number\">1<\/span><\/span><br><span role=\"presentation\"><span class=\"cm-variable\">IL_0016<\/span>: &nbsp;<span class=\"cm-variable\">callvirt<\/span> &nbsp; <span class=\"cm-variable\">instance<\/span> <span class=\"cm-variable-3\">bool<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Runtime<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Collections<\/span>.<span class=\"cm-variable\">IEnumerator<\/span>::<span class=\"cm-variable\">MoveNext<\/span>()<\/span><br><span role=\"presentation\"><span class=\"cm-variable\">IL_001b<\/span>: &nbsp;<span class=\"cm-variable\">pop<\/span><\/span><br><span role=\"presentation\"><span class=\"cm-variable\">IL_001c<\/span>: &nbsp;<span class=\"cm-variable\">call<\/span> &nbsp; &nbsp; &nbsp; <span class=\"cm-variable\">valuetype<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Console<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">ConsoleKeyInfo<\/span> [<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Console<\/span>]<span class=\"cm-variable\">System<\/span>.<span class=\"cm-variable\">Console<\/span>::<span class=\"cm-variable\">ReadKey<\/span>()<\/span><\/pre>\n<\/li>\n<li class=\"md-list-item\">\n<p class=\"md-end-block md-p\"><span class=\"md-plain\">\u9664\u975e\u6211\u5011\u518d<\/span><span class=\"md-html-inline\" spellcheck=\"false\"><span style=\"color: red;\"><span class=\"md-plain\">\u624b\u52d5\u986f\u5f0f\u8abf\u7528Dispose\u65b9\u6cd5\uff0c\u90a3finally\u65b9\u6cd5\u5c31\u6703\u88ab\u57f7\u884c<\/span><\/span><\/span><\/p>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<div class=\"md-hr md-end-block\" tabindex=\"-1\">\n<hr>\n<\/div>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2de4497 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2de4497\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-55020ba\" data-id=\"55020ba\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-17a66a9 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"17a66a9\" data-element_type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-cbefa34 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"cbefa34\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-2fd33fe\" data-id=\"2fd33fe\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0de6716 elementor-widget elementor-widget-text-editor\" data-id=\"0de6716\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<h4 class=\"md-end-block md-heading\"><span style=\"text-decoration: underline;\"><strong><span class=\"md-plain md-expand\">\u53c3\u8003\u66f8\u76ee<\/span><\/strong><\/span><\/h4><ul class=\"ul-list\" data-mark=\"-\"><li class=\"md-list-item md-focus-container\">\u300aCLR via C#\u300b\uff08\u7b2c4\u7248\uff09 Jeffrey Richter<\/li><li>\u300a\u6df1\u5165\u7406\u89e3C#\u300b\uff08\u7b2c3\u7248\uff09 Jon Skeet<\/li><\/ul>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>\u5982\u679c\u67d0\u500b\u985e\u578b\u5be6\u73fe\u4e86IEnumerable\u63a5\u53e3\uff0c\u5c31\u4ee3\u8868\u5b83\u662f\u53ef\u8fed\u4ee3\u7684\uff0c\u53ef\u4ee5\u628a\u8fed\u4ee3\u5668\u60f3\u8c61\u6210\u6578\u64da\u5eab\u7684\u6e38\u6a19\uff0c\u8fed\u4ee3\u5668\u53ea\u80fd\u5728\u5e8f\u5217\u4e2d\u5411\u524d\u79fb\u52d5\uff0c\u800c\u4e14\u5c0d\u65bc\u540c\u4e00\u5e8f\u5217\u53ef\u80fd\u540c\u6642\u5b58\u5728\u591a\u500b\u8fed\u4ee3\u5668\u64cd\u4f5c\u3002\u8fed\u4ee3\u5668\u6a21\u5f0f\u4e00\u500b\u91cd\u8981\u65b9\u9762\u662f\uff0c\u4e0d\u7528\u4e00\u6b21\u8fd4\u56de\u6240\u6709\u6578\u64da\u2014\u2014\u8abf\u7528\u4ee3\u78bc\u4e00\u6b21\u53ea\u9700\u7372\u53d6\u4e00\u500b\u5143\u7d20\u3002<\/p>\n","protected":false},"author":1,"featured_media":947,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[3,27,18],"tags":[],"class_list":["post-3990","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-reading-notes","category-c-sharp","category-developing"],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"https:\/\/lonelinerd.com\/wp-content\/uploads\/2021\/03\/FeatureCover_ReadingNotes.png","_links":{"self":[{"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/posts\/3990","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/comments?post=3990"}],"version-history":[{"count":19,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/posts\/3990\/revisions"}],"predecessor-version":[{"id":4074,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/posts\/3990\/revisions\/4074"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/media\/947"}],"wp:attachment":[{"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/media?parent=3990"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/categories?post=3990"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lonelinerd.com\/index.php\/wp-json\/wp\/v2\/tags?post=3990"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}