{"id":73842,"date":"2026-02-08T13:33:16","date_gmt":"2026-02-08T05:33:16","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/73842.html"},"modified":"2026-02-08T13:33:16","modified_gmt":"2026-02-08T05:33:16","slug":"%e3%80%90c%e3%80%91c%e6%a8%a1%e6%9d%bf%e7%89%b9%e5%8c%96%ef%bc%9a%e7%b2%be%e5%87%86%e5%ae%9a%e5%88%b6%e6%b3%9b%e5%9e%8b%e9%80%bb%e8%be%91","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/73842.html","title":{"rendered":"\u3010C++\u3011C++\u6a21\u677f\u7279\u5316\uff1a\u7cbe\u51c6\u5b9a\u5236\u6cdb\u578b\u903b\u8f91"},"content":{"rendered":"<\/p>\n<h4>\u6587\u7ae0\u76ee\u5f55<\/h4>\n<ul>\n<li>\n<ul>\n<li>\u4e00\u3001\u6a21\u677f\u7279\u5316\u7684\u6838\u5fc3\u6982\u5ff5<\/li>\n<li>\u4e8c\u3001\u6a21\u677f\u7279\u5316\u7684\u5206\u7c7b<\/li>\n<li>\n<ul>\n<li>2.1 \u5168\u7279\u5316<\/li>\n<li>\n<ul>\n<li>2.1.1 \u7c7b\u6a21\u677f\u5168\u7279\u5316\u793a\u4f8b<\/li>\n<li>2.1.2 \u51fd\u6570\u6a21\u677f\u5168\u7279\u5316\u793a\u4f8b<\/li>\n<\/ul>\n<\/li>\n<li>2.2 \u504f\u7279\u5316<\/li>\n<li>\n<ul>\n<li>2.2.1 \u7c7b\u6a21\u677f\u504f\u7279\u5316\u793a\u4f8b&#xff08;\u90e8\u5206\u53c2\u6570\u7279\u5316&#xff09;<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n<li>\u4e09\u3001\u6a21\u677f\u7279\u5316\u7684\u5339\u914d\u89c4\u5219<\/li>\n<li>\u56db\u3001\u6a21\u677f\u7279\u5316\u7684\u4f7f\u7528\u573a\u666f<\/li>\n<li>\n<ul>\n<li>4.1 \u89e3\u51b3\u7279\u5b9a\u7c7b\u578b\u7684\u903b\u8f91\u5dee\u5f02<\/li>\n<li>4.2 \u63d0\u5347\u4ee3\u7801\u6548\u7387<\/li>\n<li>4.3 \u907f\u514d\u7c7b\u578b\u8f6c\u6362\u9519\u8bef<\/li>\n<li>4.4 \u7ecf\u5178\u573a\u666f&#xff1a;\u7c7b\u578b\u8403\u53d6&#xff08;Type Traits&#xff09;<\/li>\n<li>4.5 \u7ecf\u5178\u573a\u666f&#xff1a;\u6cdb\u578b\u7b97\u6cd5\u7684\u7c7b\u578b\u9002\u914d<\/li>\n<\/ul>\n<\/li>\n<li>\u4e94\u3001\u6ce8\u610f\u4e8b\u9879<\/li>\n<li>\u516d\u3001\u603b\u7ed3<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>\u6a21\u677f\u662fC&#043;&#043;\u6cdb\u578b\u7f16\u7a0b\u7684\u6838\u5fc3&#xff0c;\u5b83\u5141\u8bb8\u6211\u4eec\u7f16\u5199\u4e0e\u7c7b\u578b\u65e0\u5173\u7684\u901a\u7528\u4ee3\u7801&#xff0c;\u5927\u5e45\u63d0\u5347\u4ee3\u7801\u7684\u590d\u7528\u6027\u548c\u7075\u6d3b\u6027\u3002\u4f46\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d&#xff0c;\u901a\u7528\u6a21\u677f\u5f80\u5f80\u65e0\u6cd5\u9002\u914d\u6240\u6709\u7c7b\u578b\u2014\u2014\u67d0\u4e9b\u7279\u5b9a\u7c7b\u578b\u53ef\u80fd\u9700\u8981\u7279\u6b8a\u7684\u5b9e\u73b0\u903b\u8f91&#xff0c;\u6b64\u65f6\u5c31\u9700\u8981\u7528\u5230\u6a21\u677f\u7279\u5316&#xff08;Template Specialization&#xff09;\u3002\u6a21\u677f\u7279\u5316\u672c\u8d28\u4e0a\u662f\u5bf9\u901a\u7528\u6a21\u677f\u7684\u201c\u5b9a\u5236\u5316\u4fee\u6539\u201d&#xff0c;\u4e3a\u7279\u5b9a\u7c7b\u578b\u63d0\u4f9b\u4e13\u5c5e\u7684\u5b9e\u73b0\u65b9\u6848&#xff0c;\u89e3\u51b3\u6cdb\u578b\u7f16\u7a0b\u4e2d\u7684\u201c\u7279\u6b8a\u60c5\u51b5\u201d\u3002<\/p>\n<h3>\u4e00\u3001\u6a21\u677f\u7279\u5316\u7684\u6838\u5fc3\u6982\u5ff5<\/h3>\n<p>\u6a21\u677f\u7279\u5316\u662f\u6307&#xff1a;\u5728\u5df2\u5b9a\u4e49\u901a\u7528\u6a21\u677f&#xff08; primary template &#xff09;\u7684\u57fa\u7840\u4e0a&#xff0c;\u9488\u5bf9\u67d0\u4e00\u4e2a\u6216\u67d0\u4e00\u7ec4\u5177\u4f53\u7684\u7c7b\u578b&#xff08;\u6216\u503c&#xff09;&#xff0c;\u91cd\u65b0\u5b9a\u4e49\u6a21\u677f\u7684\u5b9e\u73b0\u3002<\/p>\n<p>\u5176\u6838\u5fc3\u76ee\u7684\u662f&#xff1a;\u6253\u7834\u6a21\u677f\u7684\u201c\u901a\u7528\u6027\u201d&#xff0c;\u4e3a\u7279\u5b9a\u573a\u666f\u63d0\u4f9b\u66f4\u7cbe\u51c6\u3001\u9ad8\u6548\u7684\u5b9e\u73b0\u3002\u6bd4\u5982&#xff0c;\u4e00\u4e2a\u901a\u7528\u7684\u6392\u5e8f\u6a21\u677f&#xff0c;\u5bf9int\u7c7b\u578b\u53ef\u4ee5\u7528\u5feb\u901f\u6392\u5e8f&#xff0c;\u5bf9\u94fe\u8868\u7c7b\u578b\u5219\u9700\u8981\u7528\u63d2\u5165\u6392\u5e8f&#xff0c;\u8fd9\u5c31\u53ef\u4ee5\u901a\u8fc7\u7279\u5316\u6765\u5b9e\u73b0\u3002<\/p>\n<p>\u6ce8\u610f&#xff1a;\u6a21\u677f\u7279\u5316\u5fc5\u987b\u57fa\u4e8e\u5df2\u5b58\u5728\u7684\u901a\u7528\u6a21\u677f&#xff0c;\u4e0d\u80fd\u8131\u79bb\u901a\u7528\u6a21\u677f\u5355\u72ec\u5b9a\u4e49\u7279\u5316\u7248\u672c&#xff1b;\u7279\u5316\u7248\u672c\u7684\u6a21\u677f\u540d\u3001\u53c2\u6570\u5217\u8868\u9700\u4e0e\u901a\u7528\u6a21\u677f\u4fdd\u6301\u4e00\u81f4&#xff0c;\u4ec5\u5728\u5177\u4f53\u5b9e\u73b0\u548c\u7c7b\u578b\u6307\u5b9a\u4e0a\u6709\u5dee\u5f02\u3002<\/p>\n<h3>\u4e8c\u3001\u6a21\u677f\u7279\u5316\u7684\u5206\u7c7b<\/h3>\n<p>\u6839\u636e\u7279\u5316\u7684\u8303\u56f4\u548c\u65b9\u5f0f&#xff0c;C&#043;&#043;\u6a21\u677f\u7279\u5316\u4e3b\u8981\u5206\u4e3a\u4e24\u7c7b&#xff1a;\u5168\u7279\u5316&#xff08;Full Specialization&#xff09;\u548c\u504f\u7279\u5316&#xff08;Partial Specialization&#xff09;\u3002\u5176\u4e2d&#xff0c;\u7c7b\u6a21\u677f\u652f\u6301\u5168\u7279\u5316\u548c\u504f\u7279\u5316&#xff0c;\u800c\u51fd\u6570\u6a21\u677f\u4ec5\u652f\u6301\u5168\u7279\u5316&#xff08;C&#043;&#043;\u6807\u51c6\u4e0d\u5141\u8bb8\u51fd\u6570\u6a21\u677f\u504f\u7279\u5316&#xff0c;\u82e5\u9700\u7c7b\u4f3c\u6548\u679c&#xff0c;\u53ef\u901a\u8fc7\u51fd\u6570\u91cd\u8f7d\u5b9e\u73b0&#xff09;\u3002<\/p>\n<h4>2.1 \u5168\u7279\u5316<\/h4>\n<p>\u5168\u7279\u5316\u662f\u6307&#xff1a;\u5bf9\u901a\u7528\u6a21\u677f\u7684\u6240\u6709\u6a21\u677f\u53c2\u6570\u90fd\u6307\u5b9a\u5177\u4f53\u7684\u7c7b\u578b&#xff08;\u6216\u503c&#xff09;&#xff0c;\u5f62\u6210\u4e00\u4e2a\u5b8c\u5168\u201c\u5b9a\u5236\u5316\u201d\u7684\u6a21\u677f\u7248\u672c\u3002<\/p>\n<p>\u7b80\u5355\u6765\u8bf4&#xff0c;\u5168\u7279\u5316\u5c31\u662f\u201c\u4e00\u4e2a\u90fd\u4e0d\u7559\u201d\u2014\u2014\u6240\u6709\u6a21\u677f\u53c2\u6570\u90fd\u88ab\u660e\u786e\u6307\u5b9a&#xff0c;\u4e0d\u518d\u4fdd\u7559\u6cdb\u578b\u3002<\/p>\n<h5>2.1.1 \u7c7b\u6a21\u677f\u5168\u7279\u5316\u793a\u4f8b<\/h5>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 1. \u901a\u7528\u7c7b\u6a21\u677f&#xff08;\u6cdb\u578b\u7248\u672c&#xff09;<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T2<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyClass<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u901a\u7528\u6a21\u677f&#xff1a;T1&#061;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">typeid<\/span><span class=\"token punctuation\">(<\/span>T1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n             <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;, T2&#061;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">typeid<\/span><span class=\"token punctuation\">(<\/span>T2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 2. \u5168\u7279\u5316\u7248\u672c&#xff1a;T1&#061;int, T2&#061;double<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">&gt;<\/span>  <span class=\"token comment\">\/\/ \u7a7a\u6a21\u677f\u53c2\u6570\u5217\u8868&#xff0c;\u8868\u793a\u6240\u6709\u53c2\u6570\u90fd\u5df2\u7279\u5316<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyClass<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">double<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5168\u7279\u5316\u7248\u672c&#xff1a;T1&#061;int, T2&#061;double&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    MyClass<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">char<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">float<\/span><span class=\"token operator\">&gt;<\/span> obj1<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u8c03\u7528\u901a\u7528\u6a21\u677f<\/span><br \/>\n    MyClass<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">double<\/span><span class=\"token operator\">&gt;<\/span> obj2<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u8c03\u7528\u5168\u7279\u5316\u7248\u672c<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8f93\u51fa\u7ed3\u679c&#xff1a;<\/p>\n<p>\u901a\u7528\u6a21\u677f&#xff1a;T1&#061;char, T2&#061;float<br \/>\n\u5168\u7279\u5316\u7248\u672c&#xff1a;T1&#061;int, T2&#061;double<\/p>\n<p>\u8bf4\u660e&#xff1a;\u5f53\u521b\u5efa\u7684\u5bf9\u8c61\u7c7b\u578b\u4e0e\u5168\u7279\u5316\u7248\u672c\u5b8c\u5168\u5339\u914d\u65f6&#xff0c;\u7f16\u8bd1\u5668\u4f1a\u4f18\u5148\u8c03\u7528\u7279\u5316\u7248\u672c&#xff1b;\u5426\u5219\u8c03\u7528\u901a\u7528\u6a21\u677f\u3002<\/p>\n<h5>2.1.2 \u51fd\u6570\u6a21\u677f\u5168\u7279\u5316\u793a\u4f8b<\/h5>\n<p>\u51fd\u6570\u6a21\u677f\u7684\u5168\u7279\u5316\u8bed\u6cd5\u4e0e\u7c7b\u6a21\u677f\u7c7b\u4f3c&#xff0c;\u4f46\u9700\u6ce8\u610f&#xff1a;\u51fd\u6570\u6a21\u677f\u4e0d\u80fd\u504f\u7279\u5316&#xff0c;\u53ea\u80fd\u5168\u7279\u5316\u3002<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;string&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 1. \u901a\u7528\u51fd\u6570\u6a21\u677f<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span>T data<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u901a\u7528\u6a21\u677f&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> data <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 2. \u5168\u7279\u5316\u7248\u672c&#xff1a;T&#061;string<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token generic-function\"><span class=\"token function\">print<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span>string<span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span>string data<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span>  <span class=\"token comment\">\/\/ \u660e\u786e\u6307\u5b9aT\u4e3astring<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5168\u7279\u5316\u7248\u672c&#xff08;string&#xff09;&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> data <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token number\">123<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>         <span class=\"token comment\">\/\/ \u8c03\u7528\u901a\u7528\u6a21\u677f&#xff0c;T&#061;int<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;hello&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>     <span class=\"token comment\">\/\/ \u8c03\u7528\u901a\u7528\u6a21\u677f&#xff0c;T&#061;const char*<\/span><br \/>\n    <span class=\"token function\">print<\/span><span class=\"token punctuation\">(<\/span><span class=\"token function\">string<\/span><span class=\"token punctuation\">(<\/span><span class=\"token string\">&#034;cpp&#034;<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><span class=\"token comment\">\/\/ \u8c03\u7528\u5168\u7279\u5316\u7248\u672c&#xff0c;T&#061;string<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8f93\u51fa\u7ed3\u679c&#xff1a;<\/p>\n<p>\u901a\u7528\u6a21\u677f&#xff1a;123<br \/>\n\u901a\u7528\u6a21\u677f&#xff1a;hello<br \/>\n\u5168\u7279\u5316\u7248\u672c&#xff08;string&#xff09;&#xff1a;cpp<\/p>\n<p>\u6ce8\u610f&#xff1a;\u5b57\u7b26\u4e32\u5b57\u9762\u91cf&#034;hello&#034;\u7684\u7c7b\u578b\u662fconst char*&#xff0c;\u5e76\u975estring&#xff0c;\u56e0\u6b64\u4e0d\u4f1a\u5339\u914dstring\u7684\u7279\u5316\u7248\u672c&#xff1b;\u53ea\u6709\u663e\u5f0f\u4f20\u5165string\u5bf9\u8c61\u65f6&#xff0c;\u624d\u4f1a\u8c03\u7528\u7279\u5316\u7248\u672c\u3002<\/p>\n<h4>2.2 \u504f\u7279\u5316<\/h4>\n<p>\u504f\u7279\u5316&#xff08;\u4e5f\u53eb\u90e8\u5206\u7279\u5316&#xff09;\u662f\u6307&#xff1a;\u5bf9\u901a\u7528\u6a21\u677f\u7684\u90e8\u5206\u6a21\u677f\u53c2\u6570\u6307\u5b9a\u5177\u4f53\u7c7b\u578b&#xff08;\u6216\u503c&#xff09;&#xff0c;\u4fdd\u7559\u5269\u4f59\u53c2\u6570\u7684\u6cdb\u578b\u7279\u6027\u3002<\/p>\n<p>\u504f\u7279\u5316\u7684\u6838\u5fc3\u662f\u201c\u90e8\u5206\u5b9a\u5236\u201d\u2014\u2014\u53ea\u9488\u5bf9\u90e8\u5206\u53c2\u6570\u8fdb\u884c\u7279\u5316&#xff0c;\u5176\u4f59\u53c2\u6570\u4ecd\u53ef\u7075\u6d3b\u6307\u5b9a&#xff0c;\u9002\u7528\u4e8e\u9700\u8981\u6279\u91cf\u9002\u914d\u67d0\u4e00\u7c7b\u7c7b\u578b\u7684\u573a\u666f&#xff08;\u6bd4\u5982\u201c\u6240\u6709\u6307\u9488\u7c7b\u578b\u201d\u201c\u6240\u6709\u5bb9\u5668\u7c7b\u578b\u201d&#xff09;\u3002<\/p>\n<p>\u91cd\u8981\u63d0\u9192&#xff1a;\u53ea\u6709\u7c7b\u6a21\u677f\u652f\u6301\u504f\u7279\u5316&#xff0c;\u51fd\u6570\u6a21\u677f\u4e0d\u652f\u6301\u504f\u7279\u5316\u3002\u5982\u679c\u9700\u8981\u5b9e\u73b0\u51fd\u6570\u6a21\u677f\u7684\u201c\u90e8\u5206\u7279\u5316\u6548\u679c\u201d&#xff0c;\u53ef\u4ee5\u4f7f\u7528\u51fd\u6570\u91cd\u8f7d\u3002<\/p>\n<h5>2.2.1 \u7c7b\u6a21\u677f\u504f\u7279\u5316\u793a\u4f8b&#xff08;\u90e8\u5206\u53c2\u6570\u7279\u5316&#xff09;<\/h5>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 1. \u901a\u7528\u7c7b\u6a21\u677f&#xff08;\u4e24\u4e2a\u6cdb\u578b\u53c2\u6570&#xff09;<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T2<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyClass<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u901a\u7528\u6a21\u677f&#xff1a;T1&#061;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">typeid<\/span><span class=\"token punctuation\">(<\/span>T1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n             <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;, T2&#061;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">typeid<\/span><span class=\"token punctuation\">(<\/span>T2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 2. \u504f\u7279\u5316\u7248\u672c1&#xff1a;T1&#061;int&#xff0c;T2\u4fdd\u7559\u6cdb\u578b<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T2<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyClass<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> T2<span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u504f\u7279\u5316\u7248\u672c1&#xff1a;T1&#061;int, T2&#061;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">typeid<\/span><span class=\"token punctuation\">(<\/span>T2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 3. \u504f\u7279\u5316\u7248\u672c2&#xff1a;T1\u548cT2\u90fd\u662f\u6307\u9488\u7c7b\u578b<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T2<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyClass<\/span><span class=\"token operator\">&lt;<\/span>T1<span class=\"token operator\">*<\/span><span class=\"token punctuation\">,<\/span> T2<span class=\"token operator\">*<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u504f\u7279\u5316\u7248\u672c2&#xff1a;T1*&#061;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">typeid<\/span><span class=\"token punctuation\">(<\/span>T1<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><br \/>\n             <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;, T2*&#061;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">typeid<\/span><span class=\"token punctuation\">(<\/span>T2<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    MyClass<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">char<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">float<\/span><span class=\"token operator\">&gt;<\/span> obj1<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u901a\u7528\u6a21\u677f<\/span><br \/>\n    MyClass<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">double<\/span><span class=\"token operator\">&gt;<\/span> obj2<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u504f\u7279\u5316\u7248\u672c1&#xff08;T1&#061;int&#xff09;<\/span><br \/>\n    MyClass<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> obj3<span class=\"token punctuation\">;<\/span>    <span class=\"token comment\">\/\/ \u504f\u7279\u5316\u7248\u672c1&#xff08;T1&#061;int&#xff09;<\/span><br \/>\n    MyClass<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">int<\/span><span class=\"token operator\">*<\/span><span class=\"token operator\">&gt;<\/span> obj4<span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u504f\u7279\u5316\u7248\u672c2&#xff08;\u90fd\u662f\u6307\u9488&#xff09;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8f93\u51fa\u7ed3\u679c&#xff1a;<\/p>\n<p>\u901a\u7528\u6a21\u677f&#xff1a;T1&#061;char, T2&#061;float<br \/>\n\u504f\u7279\u5316\u7248\u672c1&#xff1a;T1&#061;int, T2&#061;double<br \/>\n\u504f\u7279\u5316\u7248\u672c1&#xff1a;T1&#061;int, T2&#061;int<br \/>\n\u504f\u7279\u5316\u7248\u672c2&#xff1a;T1*&#061;char, T2*&#061;int<\/p>\n<p>\u5206\u6790&#xff1a;\u504f\u7279\u5316\u7248\u672c2\u9488\u5bf9\u201c\u4e24\u4e2a\u53c2\u6570\u90fd\u662f\u6307\u9488\u201d\u7684\u573a\u666f&#xff0c;\u65e0\u8bba\u6307\u9488\u6307\u5411\u54ea\u79cd\u7c7b\u578b&#xff0c;\u90fd\u4f1a\u5339\u914d\u8be5\u7248\u672c&#xff0c;\u5b9e\u73b0\u4e86\u201c\u4e00\u7c7b\u7c7b\u578b\u201d\u7684\u6279\u91cf\u5b9a\u5236\u3002<\/p>\n<h3>\u4e09\u3001\u6a21\u677f\u7279\u5316\u7684\u5339\u914d\u89c4\u5219<\/h3>\n<p>\u5f53\u7f16\u8bd1\u5668\u9047\u5230\u6a21\u677f\u5b9e\u4f8b\u5316\u65f6&#xff0c;\u4f1a\u6309\u7167\u201c\u6700\u5339\u914d\u539f\u5219\u201d\u9009\u62e9\u8c03\u7528\u7684\u7248\u672c&#xff0c;\u4f18\u5148\u7ea7\u4ece\u9ad8\u5230\u4f4e\u4f9d\u6b21\u4e3a&#xff1a;<\/p>\n<li>\u5168\u7279\u5316\u7248\u672c&#xff1a;\u5b8c\u5168\u5339\u914d\u6240\u6709\u6a21\u677f\u53c2\u6570&#xff0c;\u4f18\u5148\u7ea7\u6700\u9ad8&#xff1b;<\/li>\n<li>\u504f\u7279\u5316\u7248\u672c&#xff1a;\u90e8\u5206\u5339\u914d\u6a21\u677f\u53c2\u6570&#xff0c;\u4f18\u5148\u7ea7\u6b21\u4e4b&#xff1b;<\/li>\n<li>\u901a\u7528\u6a21\u677f&#xff1a;\u4e0d\u5339\u914d\u4efb\u4f55\u7279\u5316\u7248\u672c\u65f6&#xff0c;\u8c03\u7528\u901a\u7528\u7248\u672c\u3002<\/li>\n<p>\u793a\u4f8b&#xff1a;\u82e5\u540c\u65f6\u5b58\u5728\u5168\u7279\u5316\u3001\u504f\u7279\u5316\u548c\u901a\u7528\u6a21\u677f&#xff0c;\u7f16\u8bd1\u5668\u4f1a\u4f18\u5148\u9009\u62e9\u6700\u5339\u914d\u7684\u7248\u672c\u3002<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u901a\u7528\u6a21\u677f<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T1<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T2<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyClass<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u901a\u7528\u6a21\u677f&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u504f\u7279\u5316&#xff1a;T1&#061;int<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T2<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyClass<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> T2<span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u504f\u7279\u5316&#xff08;T1&#061;int&#xff09;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u5168\u7279\u5316&#xff1a;T1&#061;int, T2&#061;double<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">MyClass<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">double<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token function\">MyClass<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span> cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u5168\u7279\u5316&#xff08;int, double&#xff09;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span> <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    MyClass<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">char<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">float<\/span><span class=\"token operator\">&gt;<\/span> obj1<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u901a\u7528\u6a21\u677f&#xff08;\u65e0\u5339\u914d\u7279\u5316&#xff09;<\/span><br \/>\n    MyClass<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">float<\/span><span class=\"token operator\">&gt;<\/span> obj2<span class=\"token punctuation\">;<\/span>   <span class=\"token comment\">\/\/ \u504f\u7279\u5316&#xff08;T1&#061;int&#xff0c;\u6700\u5339\u914d&#xff09;<\/span><br \/>\n    MyClass<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">double<\/span><span class=\"token operator\">&gt;<\/span> obj3<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u5168\u7279\u5316&#xff08;\u5b8c\u5168\u5339\u914d&#xff0c;\u4f18\u5148\u7ea7\u6700\u9ad8&#xff09;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8f93\u51fa\u7ed3\u679c&#xff1a;<\/p>\n<p>\u901a\u7528\u6a21\u677f<br \/>\n\u504f\u7279\u5316&#xff08;T1&#061;int&#xff09;<br \/>\n\u5168\u7279\u5316&#xff08;int, double&#xff09;<\/p>\n<h3>\u56db\u3001\u6a21\u677f\u7279\u5316\u7684\u4f7f\u7528\u573a\u666f<\/h3>\n<p>\u6a21\u677f\u7279\u5316\u4e0d\u662f\u201c\u5fc5\u9700\u201d\u7684&#xff0c;\u4f46\u5728\u5f88\u591a\u573a\u666f\u4e0b\u80fd\u89e3\u51b3\u901a\u7528\u6a21\u677f\u7684\u5c40\u9650\u6027&#xff0c;\u63d0\u5347\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u3001\u6548\u7387\u548c\u6b63\u786e\u6027\u3002<\/p>\n<h4>4.1 \u89e3\u51b3\u7279\u5b9a\u7c7b\u578b\u7684\u903b\u8f91\u5dee\u5f02<\/h4>\n<p>\u901a\u7528\u6a21\u677f\u7684\u903b\u8f91\u53ef\u80fd\u4e0d\u9002\u7528\u4e8e\u67d0\u4e9b\u7c7b\u578b&#xff08;\u6bd4\u5982\u6307\u9488\u3001\u5f15\u7528\u3001\u5b57\u7b26\u4e32\u7b49&#xff09;&#xff0c;\u6b64\u65f6\u901a\u8fc7\u7279\u5316\u63d0\u4f9b\u4e13\u5c5e\u5b9e\u73b0\u3002<\/p>\n<p>\u793a\u4f8b&#xff1a;\u4e00\u4e2a\u8ba1\u7b97\u201c\u7c7b\u578b\u5927\u5c0f\u201d\u7684\u6a21\u677f&#xff0c;\u5bf9\u6307\u9488\u7c7b\u578b\u9700\u8981\u7279\u6b8a\u5904\u7406&#xff08;\u8ba1\u7b97\u6307\u9488\u672c\u8eab\u7684\u5927\u5c0f&#xff0c;\u800c\u975e\u6307\u5411\u5185\u5bb9\u7684\u5927\u5c0f&#xff09;\u3002<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u901a\u7528\u6a21\u677f&#xff1a;\u8ba1\u7b97\u7c7b\u578bT\u7684\u5927\u5c0f<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">SizeCalculator<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> size <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>T<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u504f\u7279\u5316&#xff1a;\u9488\u5bf9\u6307\u9488\u7c7b\u578b<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">SizeCalculator<\/span><span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">*<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">int<\/span> size <span class=\"token operator\">&#061;<\/span> <span class=\"token keyword\">sizeof<\/span><span class=\"token punctuation\">(<\/span>T<span class=\"token operator\">*<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u6307\u9488\u672c\u8eab\u7684\u5927\u5c0f&#xff08;\u4e0e\u5e73\u53f0\u6709\u5173&#xff0c;\u901a\u5e388\u5b57\u8282&#xff09;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;int\u7684\u5927\u5c0f&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> SizeCalculator<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token double-colon punctuation\">::<\/span>size <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span>    <span class=\"token comment\">\/\/ 4\u5b57\u8282<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;int*\u7684\u5927\u5c0f&#xff1a;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> SizeCalculator<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">*<\/span><span class=\"token operator\">&gt;<\/span><span class=\"token double-colon punctuation\">::<\/span>size <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ 8\u5b57\u8282&#xff08;64\u4f4d\u5e73\u53f0&#xff09;<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<h4>4.2 \u63d0\u5347\u4ee3\u7801\u6548\u7387<\/h4>\n<p>\u901a\u7528\u6a21\u677f\u4e3a\u4e86\u9002\u914d\u6240\u6709\u7c7b\u578b&#xff0c;\u53ef\u80fd\u4f1a\u5f15\u5165\u4e00\u4e9b\u5197\u4f59\u903b\u8f91&#xff1b;\u7279\u5316\u7248\u672c\u53ef\u4ee5\u9488\u5bf9\u7279\u5b9a\u7c7b\u578b\u505a\u4f18\u5316&#xff0c;\u63d0\u5347\u6267\u884c\u6548\u7387\u3002<\/p>\n<p>\u793a\u4f8b&#xff1a;\u4e00\u4e2a\u901a\u7528\u7684\u6392\u5e8f\u6a21\u677f&#xff0c;\u5bf9int\u7c7b\u578b&#xff08;\u8fde\u7eed\u5185\u5b58\u3001\u53ef\u968f\u673a\u8bbf\u95ee&#xff09;\u7528\u5feb\u901f\u6392\u5e8f&#xff0c;\u5bf9\u94fe\u8868\u7c7b\u578b&#xff08;\u975e\u8fde\u7eed\u5185\u5b58&#xff09;\u7528\u63d2\u5165\u6392\u5e8f&#xff0c;\u901a\u8fc7\u7279\u5316\u5b9e\u73b0\u4e0d\u540c\u7c7b\u578b\u7684\u6700\u4f18\u6392\u5e8f\u7b97\u6cd5\u3002<\/p>\n<h4>4.3 \u907f\u514d\u7c7b\u578b\u8f6c\u6362\u9519\u8bef<\/h4>\n<p>\u67d0\u4e9b\u573a\u666f\u4e0b&#xff0c;\u901a\u7528\u6a21\u677f\u7684\u7c7b\u578b\u63a8\u5bfc\u53ef\u80fd\u5bfc\u81f4\u9690\u5f0f\u7c7b\u578b\u8f6c\u6362&#xff0c;\u5f15\u53d1\u9519\u8bef&#xff1b;\u7279\u5316\u7248\u672c\u53ef\u4ee5\u660e\u786e\u6307\u5b9a\u7c7b\u578b&#xff0c;\u907f\u514d\u8f6c\u6362\u95ee\u9898\u3002<\/p>\n<h4>4.4 \u7ecf\u5178\u573a\u666f&#xff1a;\u7c7b\u578b\u8403\u53d6&#xff08;Type Traits&#xff09;<\/h4>\n<p>\u7c7b\u578b\u8403\u53d6\u662f\u6a21\u677f\u7279\u5316\u6700\u7ecf\u5178\u7684\u5e94\u7528\u4e4b\u4e00&#xff0c;\u6838\u5fc3\u662f\u901a\u8fc7\u7279\u5316\u6a21\u677f&#xff0c;\u201c\u8403\u53d6\u201d\u51fa\u4e0d\u540c\u7c7b\u578b\u7684\u56fa\u6709\u5c5e\u6027&#xff08;\u5982\u662f\u5426\u4e3a\u6307\u9488\u3001\u662f\u5426\u4e3a\u5e38\u91cf\u3001\u662f\u5426\u4e3a\u57fa\u7840\u7c7b\u578b\u7b49&#xff09;&#xff0c;\u4e3a\u6cdb\u578b\u4ee3\u7801\u63d0\u4f9b\u7c7b\u578b\u76f8\u5173\u7684\u51b3\u7b56\u4f9d\u636e&#xff0c;\u662fC&#043;&#043;\u6807\u51c6\u5e93&lt;type_traits&gt;\u5934\u6587\u4ef6\u7684\u6838\u5fc3\u5b9e\u73b0\u539f\u7406\u3002<\/p>\n<p>\u793a\u4f8b&#xff1a;\u81ea\u5b9a\u4e49\u7b80\u5355\u7684\u7c7b\u578b\u8403\u53d6\u6a21\u677f&#xff0c;\u5224\u65ad\u67d0\u7c7b\u578b\u662f\u5426\u4e3a\u6307\u9488\u7c7b\u578b\u3002<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 1. \u901a\u7528\u6a21\u677f&#xff1a;\u9ed8\u8ba4\u8403\u53d6\u7ed3\u679c\u4e3afalse&#xff08;\u975e\u6307\u9488\u7c7b\u578b&#xff09;<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">IsPointer<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">bool<\/span> value <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">false<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u7c7b\u578b\u5c5e\u6027\u6807\u8bc6<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 2. \u504f\u7279\u5316\u7248\u672c&#xff1a;\u9488\u5bf9\u6307\u9488\u7c7b\u578b&#xff0c;\u8403\u53d6\u7ed3\u679c\u4e3atrue<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">IsPointer<\/span><span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">*<\/span><span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">static<\/span> <span class=\"token keyword\">const<\/span> <span class=\"token keyword\">bool<\/span> value <span class=\"token operator\">&#061;<\/span> <span class=\"token boolean\">true<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ \u6d4b\u8bd5\u51fd\u6570&#xff1a;\u6839\u636e\u8403\u53d6\u7ed3\u679c\u6267\u884c\u4e0d\u540c\u903b\u8f91<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">testPointerType<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token keyword\">if<\/span> <span class=\"token punctuation\">(<\/span>IsPointer<span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span><span class=\"token double-colon punctuation\">::<\/span>value<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">typeid<\/span><span class=\"token punctuation\">(<\/span>T<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034; \u662f\u6307\u9488\u7c7b\u578b&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span> <span class=\"token keyword\">else<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n        cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token keyword\">typeid<\/span><span class=\"token punctuation\">(<\/span>T<span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">.<\/span><span class=\"token function\">name<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034; \u4e0d\u662f\u6307\u9488\u7c7b\u578b&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token punctuation\">}<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token generic-function\"><span class=\"token function\">testPointerType<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>       <span class=\"token comment\">\/\/ \u975e\u6307\u9488<\/span><br \/>\n    <span class=\"token generic-function\"><span class=\"token function\">testPointerType<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">*<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>      <span class=\"token comment\">\/\/ \u6307\u9488<\/span><br \/>\n    <span class=\"token generic-function\"><span class=\"token function\">testPointerType<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">char<\/span><span class=\"token operator\">*<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>     <span class=\"token comment\">\/\/ \u6307\u9488<\/span><br \/>\n    <span class=\"token generic-function\"><span class=\"token function\">testPointerType<\/span><span class=\"token generic class-name\"><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">double<\/span><span class=\"token operator\">&gt;<\/span><\/span><\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span>    <span class=\"token comment\">\/\/ \u975e\u6307\u9488<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8f93\u51fa\u7ed3\u679c&#xff1a;<\/p>\n<p>int \u4e0d\u662f\u6307\u9488\u7c7b\u578b<br \/>\nint * \u662f\u6307\u9488\u7c7b\u578b<br \/>\nchar * \u662f\u6307\u9488\u7c7b\u578b<br \/>\ndouble \u4e0d\u662f\u6307\u9488\u7c7b\u578b<\/p>\n<p>\u89e3\u6790&#xff1a;\u901a\u8fc7\u6a21\u677f\u504f\u7279\u5316&#xff0c;\u6211\u4eec\u65e0\u9700\u4fee\u6539\u901a\u7528\u903b\u8f91&#xff0c;\u4ec5\u4e3a\u6307\u9488\u7c7b\u578b\u5b9a\u5236\u4e86\u8403\u53d6\u89c4\u5219&#xff0c;\u6cdb\u578b\u4ee3\u7801\u53ef\u6839\u636e\u8403\u53d6\u7ed3\u679c\u81ea\u52a8\u9002\u914d\u4e0d\u540c\u7c7b\u578b&#xff0c;\u8fd9\u4e5f\u662f\u6807\u51c6\u5e93\u4e2dis_pointer\u3001is_const\u7b49\u5de5\u5177\u7684\u5e95\u5c42\u5b9e\u73b0\u601d\u8def\u3002<\/p>\n<h4>4.5 \u7ecf\u5178\u573a\u666f&#xff1a;\u6cdb\u578b\u7b97\u6cd5\u7684\u7c7b\u578b\u9002\u914d<\/h4>\n<p>C&#043;&#043;\u6807\u51c6\u5e93\u4e2d\u7684\u6cdb\u578b\u7b97\u6cd5&#xff08;\u5982\u6392\u5e8f\u3001\u67e5\u627e&#xff09;&#xff0c;\u4f1a\u901a\u8fc7\u6a21\u677f\u7279\u5316\u9002\u914d\u4e0d\u540c\u5bb9\u5668\u7684\u8fed\u4ee3\u5668\u7c7b\u578b&#xff0c;\u786e\u4fdd\u7b97\u6cd5\u6548\u7387\u3002\u4f8b\u5982&#xff0c;\u9488\u5bf9\u968f\u673a\u8bbf\u95ee\u8fed\u4ee3\u5668&#xff08;\u5982vector\u7684\u8fed\u4ee3\u5668&#xff09;&#xff0c;\u6392\u5e8f\u7b97\u6cd5\u4f7f\u7528\u5feb\u901f\u6392\u5e8f&#xff1b;\u9488\u5bf9\u53cc\u5411\u8fed\u4ee3\u5668&#xff08;\u5982list\u7684\u8fed\u4ee3\u5668&#xff09;&#xff0c;\u6392\u5e8f\u7b97\u6cd5\u4f7f\u7528\u5f52\u5e76\u6392\u5e8f&#xff0c;\u8fd9\u4e00\u9002\u914d\u5c31\u662f\u901a\u8fc7\u6a21\u677f\u7279\u5316\u5b9e\u73b0\u7684\u3002<\/p>\n<p>\u7b80\u5316\u793a\u4f8b&#xff1a;\u6a21\u62df\u6cdb\u578b\u6392\u5e8f\u7b97\u6cd5\u7684\u7279\u5316\u9002\u914d&#xff08;\u533a\u5206\u968f\u673a\u8bbf\u95ee\u548c\u53cc\u5411\u8fed\u4ee3\u5668&#xff09;\u3002<\/p>\n<p><span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;iostream&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;vector&gt;<\/span><\/span><br \/>\n<span class=\"token macro property\"><span class=\"token directive-hash\">#<\/span><span class=\"token directive keyword\">include<\/span> <span class=\"token string\">&lt;list&gt;<\/span><\/span><br \/>\n<span class=\"token keyword\">using<\/span> <span class=\"token keyword\">namespace<\/span> std<span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 1. \u5b9a\u4e49\u8fed\u4ee3\u5668\u7c7b\u578b\u6807\u8bb0&#xff08;\u6a21\u62df\u6807\u51c6\u5e93\u7684iterator_traits&#xff09;<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">RandomAccessIteratorTag<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span>  <span class=\"token comment\">\/\/ \u968f\u673a\u8bbf\u95ee\u8fed\u4ee3\u5668\u6807\u8bb0<\/span><br \/>\n<span class=\"token keyword\">struct<\/span> <span class=\"token class-name\">BidirectionalIteratorTag<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u53cc\u5411\u8fed\u4ee3\u5668\u6807\u8bb0<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 2. \u901a\u7528\u8fed\u4ee3\u5668\u7c7b\u578b\u8403\u53d6&#xff08;\u9ed8\u8ba4\u9002\u914d\u53cc\u5411\u8fed\u4ee3\u5668&#xff09;<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">Iterator<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">IteratorTraits<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">typedef<\/span> BidirectionalIteratorTag IteratorCategory<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 3. \u504f\u7279\u5316&#xff1a;vector\u7684\u8fed\u4ee3\u5668\u4e3a\u968f\u673a\u8bbf\u95ee\u8fed\u4ee3\u5668<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">T<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">class<\/span> <span class=\"token class-name\">IteratorTraits<\/span><span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">vector<\/span><span class=\"token operator\">&lt;<\/span>T<span class=\"token operator\">&gt;<\/span><span class=\"token double-colon punctuation\">::<\/span>iterator<span class=\"token operator\">&gt;<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n<span class=\"token keyword\">public<\/span><span class=\"token operator\">:<\/span><br \/>\n    <span class=\"token keyword\">typedef<\/span> RandomAccessIteratorTag IteratorCategory<span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 4. \u901a\u7528\u6392\u5e8f\u7b97\u6cd5&#xff08;\u6839\u636e\u8fed\u4ee3\u5668\u7c7b\u578b\u9002\u914d&#xff09;<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">Iterator<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">sort<\/span><span class=\"token punctuation\">(<\/span>Iterator begin<span class=\"token punctuation\">,<\/span> Iterator end<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u8c03\u7528\u5177\u4f53\u7684\u6392\u5e8f\u5b9e\u73b0&#xff08;\u6839\u636e\u8fed\u4ee3\u5668\u7c7b\u578b\u7279\u5316&#xff09;<\/span><br \/>\n    <span class=\"token function\">sortImpl<\/span><span class=\"token punctuation\">(<\/span>begin<span class=\"token punctuation\">,<\/span> end<span class=\"token punctuation\">,<\/span> <span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">IteratorTraits<\/span><span class=\"token operator\">&lt;<\/span>Iterator<span class=\"token operator\">&gt;<\/span><span class=\"token double-colon punctuation\">::<\/span><span class=\"token function\">IteratorCategory<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 5. \u7279\u5316\u5b9e\u73b01&#xff1a;\u968f\u673a\u8bbf\u95ee\u8fed\u4ee3\u5668&#xff08;\u7528\u5feb\u901f\u6392\u5e8f&#xff0c;\u6548\u7387\u9ad8&#xff09;<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">Iterator<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">sortImpl<\/span><span class=\"token punctuation\">(<\/span>Iterator begin<span class=\"token punctuation\">,<\/span> Iterator end<span class=\"token punctuation\">,<\/span> RandomAccessIteratorTag<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u4f7f\u7528\u5feb\u901f\u6392\u5e8f&#xff08;\u968f\u673a\u8bbf\u95ee\u8fed\u4ee3\u5668\u9002\u914d&#xff09;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u5feb\u901f\u6392\u5e8f\u6838\u5fc3\u903b\u8f91&#xff08;\u7701\u7565&#xff09;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token comment\">\/\/ 6. \u7279\u5316\u5b9e\u73b02&#xff1a;\u53cc\u5411\u8fed\u4ee3\u5668&#xff08;\u7528\u5f52\u5e76\u6392\u5e8f&#xff0c;\u907f\u514d\u968f\u673a\u8bbf\u95ee\u64cd\u4f5c&#xff09;<\/span><br \/>\n<span class=\"token keyword\">template<\/span> <span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">typename<\/span> <span class=\"token class-name\">Iterator<\/span><span class=\"token operator\">&gt;<\/span><br \/>\n<span class=\"token keyword\">void<\/span> <span class=\"token function\">sortImpl<\/span><span class=\"token punctuation\">(<\/span>Iterator begin<span class=\"token punctuation\">,<\/span> Iterator end<span class=\"token punctuation\">,<\/span> BidirectionalIteratorTag<span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    cout <span class=\"token operator\">&lt;&lt;<\/span> <span class=\"token string\">&#034;\u4f7f\u7528\u5f52\u5e76\u6392\u5e8f&#xff08;\u53cc\u5411\u8fed\u4ee3\u5668\u9002\u914d&#xff09;&#034;<\/span> <span class=\"token operator\">&lt;&lt;<\/span> endl<span class=\"token punctuation\">;<\/span><br \/>\n    <span class=\"token comment\">\/\/ \u5f52\u5e76\u6392\u5e8f\u6838\u5fc3\u903b\u8f91&#xff08;\u7701\u7565&#xff09;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p><span class=\"token keyword\">int<\/span> <span class=\"token function\">main<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span> <span class=\"token punctuation\">{<\/span><br \/>\n    vector<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> vec <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><br \/>\n    list<span class=\"token operator\">&lt;<\/span><span class=\"token keyword\">int<\/span><span class=\"token operator\">&gt;<\/span> lst <span class=\"token operator\">&#061;<\/span> <span class=\"token punctuation\">{<\/span><span class=\"token number\">3<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">1<\/span><span class=\"token punctuation\">,<\/span><span class=\"token number\">2<\/span><span class=\"token punctuation\">}<\/span><span class=\"token punctuation\">;<\/span><\/p>\n<p>    <span class=\"token function\">sort<\/span><span class=\"token punctuation\">(<\/span>vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> vec<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u9002\u914d\u968f\u673a\u8bbf\u95ee\u8fed\u4ee3\u5668&#xff0c;\u8c03\u7528\u5feb\u901f\u6392\u5e8f<\/span><br \/>\n    <span class=\"token function\">sort<\/span><span class=\"token punctuation\">(<\/span>lst<span class=\"token punctuation\">.<\/span><span class=\"token function\">begin<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">,<\/span> lst<span class=\"token punctuation\">.<\/span><span class=\"token function\">end<\/span><span class=\"token punctuation\">(<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">)<\/span><span class=\"token punctuation\">;<\/span> <span class=\"token comment\">\/\/ \u9002\u914d\u53cc\u5411\u8fed\u4ee3\u5668&#xff0c;\u8c03\u7528\u5f52\u5e76\u6392\u5e8f<\/span><br \/>\n    <span class=\"token keyword\">return<\/span> <span class=\"token number\">0<\/span><span class=\"token punctuation\">;<\/span><br \/>\n<span class=\"token punctuation\">}<\/span><\/p>\n<p>\u8f93\u51fa\u7ed3\u679c&#xff1a;<\/p>\n<p>\u4f7f\u7528\u5feb\u901f\u6392\u5e8f&#xff08;\u968f\u673a\u8bbf\u95ee\u8fed\u4ee3\u5668\u9002\u914d&#xff09;<br \/>\n\u4f7f\u7528\u5f52\u5e76\u6392\u5e8f&#xff08;\u53cc\u5411\u8fed\u4ee3\u5668\u9002\u914d&#xff09;<\/p>\n<p>\u89e3\u6790&#xff1a;\u901a\u8fc7\u6a21\u677f\u504f\u7279\u5316\u8403\u53d6\u8fed\u4ee3\u5668\u7c7b\u578b&#xff0c;\u6cdb\u578bsort\u7b97\u6cd5\u53ef\u81ea\u52a8\u9002\u914d\u4e0d\u540c\u5bb9\u5668\u7684\u8fed\u4ee3\u5668&#xff0c;\u9009\u62e9\u6700\u4f18\u7684\u6392\u5e8f\u65b9\u6848&#xff0c;\u65e2\u4fdd\u8bc1\u4e86\u4ee3\u7801\u590d\u7528\u6027&#xff0c;\u53c8\u517c\u987e\u4e86\u6267\u884c\u6548\u7387&#xff0c;\u8fd9\u662f\u6a21\u677f\u7279\u5316\u5728\u6cdb\u578b\u7f16\u7a0b\u4e2d\u7684\u6838\u5fc3\u4ef7\u503c\u4f53\u73b0\u3002<\/p>\n<h3>\u4e94\u3001\u6ce8\u610f\u4e8b\u9879<\/h3>\n<li>\u7279\u5316\u5fc5\u987b\u57fa\u4e8e\u901a\u7528\u6a21\u677f&#xff1a;\u4e0d\u80fd\u5355\u72ec\u5b9a\u4e49\u7279\u5316\u7248\u672c&#xff0c;\u5fc5\u987b\u5148\u6709\u901a\u7528\u6a21\u677f&#xff08;primary template&#xff09;&#xff0c;\u5426\u5219\u7f16\u8bd1\u5668\u4f1a\u62a5\u9519\u3002<\/li>\n<li>\u51fd\u6570\u6a21\u677f\u65e0\u504f\u7279\u5316&#xff1a;C&#043;&#043;\u6807\u51c6\u660e\u786e\u7981\u6b62\u51fd\u6570\u6a21\u677f\u7684\u504f\u7279\u5316&#xff0c;\u82e5\u9700\u7c7b\u4f3c\u6548\u679c&#xff0c;\u53ef\u4f7f\u7528\u51fd\u6570\u91cd\u8f7d&#xff08;\u6ce8\u610f\u91cd\u8f7d\u7684\u5339\u914d\u89c4\u5219&#xff09;\u3002<\/li>\n<li>\u7279\u5316\u7248\u672c\u7684\u8bbf\u95ee\u6743\u9650&#xff1a;\u7279\u5316\u7248\u672c\u7684\u6210\u5458\u8bbf\u95ee\u6743\u9650&#xff08;public\/private\/protected&#xff09;\u9700\u4e0e\u901a\u7528\u6a21\u677f\u4fdd\u6301\u4e00\u81f4&#xff08;\u6216\u6839\u636e\u9700\u6c42\u8c03\u6574&#xff09;&#xff0c;\u5426\u5219\u53ef\u80fd\u5bfc\u81f4\u8bbf\u95ee\u9519\u8bef\u3002<\/li>\n<li>\u907f\u514d\u8fc7\u5ea6\u7279\u5316&#xff1a;\u7279\u5316\u8fc7\u591a\u4f1a\u5bfc\u81f4\u4ee3\u7801\u5197\u4f59\u3001\u7ef4\u62a4\u6210\u672c\u5347\u9ad8&#xff0c;\u53ea\u6709\u5f53\u901a\u7528\u6a21\u677f\u65e0\u6cd5\u6ee1\u8db3\u9700\u6c42\u65f6&#xff0c;\u624d\u8003\u8651\u7279\u5316\u3002<\/li>\n<li>\u6a21\u677f\u7279\u5316\u4e0etypedef&#xff1a;typedef\u65e0\u6cd5\u7528\u4e8e\u6a21\u677f\u7279\u5316\u7684\u7c7b\u578b\u6307\u5b9a&#xff0c;\u9700\u76f4\u63a5\u4f7f\u7528\u5177\u4f53\u7c7b\u578b\u6216\u6a21\u677f\u53c2\u6570\u3002<\/li>\n<h3>\u516d\u3001\u603b\u7ed3<\/h3>\n<p>\u6a21\u677f\u7279\u5316\u662fC&#043;&#043;\u6cdb\u578b\u7f16\u7a0b\u7684\u91cd\u8981\u8865\u5145&#xff0c;\u5b83\u5141\u8bb8\u6211\u4eec\u5728\u4fdd\u6301\u4ee3\u7801\u590d\u7528\u6027\u7684\u540c\u65f6&#xff0c;\u4e3a\u7279\u5b9a\u7c7b\u578b\u63d0\u4f9b\u5b9a\u5236\u5316\u5b9e\u73b0\u3002\u6838\u5fc3\u8981\u70b9\u5982\u4e0b&#xff1a;<\/p>\n<ul>\n<li>\u5168\u7279\u5316&#xff1a;\u5bf9\u6240\u6709\u6a21\u677f\u53c2\u6570\u8fdb\u884c\u5177\u4f53\u6307\u5b9a&#xff0c;\u4f18\u5148\u7ea7\u6700\u9ad8&#xff1b;<\/li>\n<li>\u504f\u7279\u5316&#xff1a;\u5bf9\u90e8\u5206\u6a21\u677f\u53c2\u6570\u8fdb\u884c\u6307\u5b9a&#xff0c;\u4ec5\u7c7b\u6a21\u677f\u652f\u6301&#xff1b;<\/li>\n<li>\u5339\u914d\u89c4\u5219&#xff1a;\u6700\u5339\u914d\u539f\u5219&#xff0c;\u5168\u7279\u5316 &gt; \u504f\u7279\u5316 &gt; \u901a\u7528\u6a21\u677f&#xff1b;<\/li>\n<li>\u4f7f\u7528\u573a\u666f&#xff1a;\u89e3\u51b3\u7279\u5b9a\u7c7b\u578b\u903b\u8f91\u5dee\u5f02\u3001\u63d0\u5347\u6548\u7387\u3001\u907f\u514d\u7c7b\u578b\u8f6c\u6362\u9519\u8bef\u3002<\/li>\n<\/ul>\n<p>\u638c\u63e1\u6a21\u677f\u7279\u5316&#xff0c;\u80fd\u8ba9\u6211\u4eec\u7684\u6cdb\u578b\u4ee3\u7801\u66f4\u7075\u6d3b\u3001\u66f4\u9ad8\u6548&#xff0c;\u5e94\u5bf9\u66f4\u591a\u590d\u6742\u7684\u5f00\u53d1\u573a\u666f\u3002\u5728\u5b9e\u9645\u5f00\u53d1\u4e2d&#xff0c;\u5e94\u5408\u7406\u4f7f\u7528\u7279\u5316&#xff0c;\u5e73\u8861\u4ee3\u7801\u7684\u590d\u7528\u6027\u548c\u5b9a\u5236\u5316\u9700\u6c42\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u6587\u7ae0\u76ee\u5f55\u4e00\u3001\u6a21\u677f\u7279\u5316\u7684\u6838\u5fc3\u6982\u5ff5\u4e8c\u3001\u6a21\u677f\u7279\u5316\u7684\u5206\u7c7b2.1 \u5168\u7279\u53162.1.1 \u7c7b\u6a21\u677f\u5168\u7279\u5316\u793a\u4f8b2.1.2 \u51fd\u6570\u6a21\u677f\u5168\u7279\u5316\u793a\u4f8b2.2 \u504f\u7279\u53162.2.1 \u7c7b\u6a21\u677f\u504f\u7279\u5316\u793a\u4f8b&#xff08;\u90e8\u5206\u53c2\u6570\u7279\u5316&#xff09;\u4e09\u3001\u6a21\u677f\u7279\u5316\u7684\u5339\u914d\u89c4\u5219\u56db\u3001\u6a21\u677f\u7279\u5316\u7684\u4f7f\u7528\u573a\u666f4.1 \u89e3\u51b3\u7279\u5b9a\u7c7b\u578b\u7684\u903b\u8f91\u5dee\u5f024.2 \u63d0\u5347\u4ee3\u7801\u6548\u73874.3 \u907f\u514d\u7c7b\u578b\u8f6c\u6362\u9519\u8bef4.4 \u7ecf\u5178\u573a\u666f&#xff1a;\u7c7b\u578b\u8403\u53d6&#xff08;Type Traits&#xff09;4.5 \u7ecf\u5178\u573a\u666f&#xff1a;\u6cdb\u578b\u7b97\u6cd5\u7684\u7c7b\u578b\u9002\u914d\u4e94\u3001\u6ce8\u610f\u4e8b\u9879<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[55,190,427],"topic":[],"class_list":["post-73842","post","type-post","status-publish","format-standard","hentry","category-server","tag-c","tag-190","tag-427"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u3010C++\u3011C++\u6a21\u677f\u7279\u5316\uff1a\u7cbe\u51c6\u5b9a\u5236\u6cdb\u578b\u903b\u8f91 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.wsisp.com\/helps\/73842.html\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u3010C++\u3011C++\u6a21\u677f\u7279\u5316\uff1a\u7cbe\u51c6\u5b9a\u5236\u6cdb\u578b\u903b\u8f91 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"og:description\" content=\"\u6587\u7ae0\u76ee\u5f55\u4e00\u3001\u6a21\u677f\u7279\u5316\u7684\u6838\u5fc3\u6982\u5ff5\u4e8c\u3001\u6a21\u677f\u7279\u5316\u7684\u5206\u7c7b2.1 \u5168\u7279\u53162.1.1 \u7c7b\u6a21\u677f\u5168\u7279\u5316\u793a\u4f8b2.1.2 \u51fd\u6570\u6a21\u677f\u5168\u7279\u5316\u793a\u4f8b2.2 \u504f\u7279\u53162.2.1 \u7c7b\u6a21\u677f\u504f\u7279\u5316\u793a\u4f8b&#xff08;\u90e8\u5206\u53c2\u6570\u7279\u5316&#xff09;\u4e09\u3001\u6a21\u677f\u7279\u5316\u7684\u5339\u914d\u89c4\u5219\u56db\u3001\u6a21\u677f\u7279\u5316\u7684\u4f7f\u7528\u573a\u666f4.1 \u89e3\u51b3\u7279\u5b9a\u7c7b\u578b\u7684\u903b\u8f91\u5dee\u5f024.2 \u63d0\u5347\u4ee3\u7801\u6548\u73874.3 \u907f\u514d\u7c7b\u578b\u8f6c\u6362\u9519\u8bef4.4 \u7ecf\u5178\u573a\u666f&#xff1a;\u7c7b\u578b\u8403\u53d6&#xff08;Type Traits&#xff09;4.5 \u7ecf\u5178\u573a\u666f&#xff1a;\u6cdb\u578b\u7b97\u6cd5\u7684\u7c7b\u578b\u9002\u914d\u4e94\u3001\u6ce8\u610f\u4e8b\u9879\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.wsisp.com\/helps\/73842.html\" \/>\n<meta property=\"og:site_name\" content=\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-08T05:33:16+00:00\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u4f5c\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4\" \/>\n\t<meta name=\"twitter:data2\" content=\"6 \u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/73842.html\",\"url\":\"https:\/\/www.wsisp.com\/helps\/73842.html\",\"name\":\"\u3010C++\u3011C++\u6a21\u677f\u7279\u5316\uff1a\u7cbe\u51c6\u5b9a\u5236\u6cdb\u578b\u903b\u8f91 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"isPartOf\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\"},\"datePublished\":\"2026-02-08T05:33:16+00:00\",\"dateModified\":\"2026-02-08T05:33:16+00:00\",\"author\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\"},\"breadcrumb\":{\"@id\":\"https:\/\/www.wsisp.com\/helps\/73842.html#breadcrumb\"},\"inLanguage\":\"zh-Hans\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/www.wsisp.com\/helps\/73842.html\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/73842.html#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u9996\u9875\",\"item\":\"https:\/\/www.wsisp.com\/helps\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u3010C++\u3011C++\u6a21\u677f\u7279\u5316\uff1a\u7cbe\u51c6\u5b9a\u5236\u6cdb\u578b\u903b\u8f91\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#website\",\"url\":\"https:\/\/www.wsisp.com\/helps\/\",\"name\":\"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3\",\"description\":\"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"zh-Hans\"},{\"@type\":\"Person\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41\",\"name\":\"admin\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"zh-Hans\",\"@id\":\"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/\",\"url\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"contentUrl\":\"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery\",\"caption\":\"admin\"},\"sameAs\":[\"http:\/\/wp.wsisp.com\"],\"url\":\"https:\/\/www.wsisp.com\/helps\/author\/admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u3010C++\u3011C++\u6a21\u677f\u7279\u5316\uff1a\u7cbe\u51c6\u5b9a\u5236\u6cdb\u578b\u903b\u8f91 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.wsisp.com\/helps\/73842.html","og_locale":"zh_CN","og_type":"article","og_title":"\u3010C++\u3011C++\u6a21\u677f\u7279\u5316\uff1a\u7cbe\u51c6\u5b9a\u5236\u6cdb\u578b\u903b\u8f91 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","og_description":"\u6587\u7ae0\u76ee\u5f55\u4e00\u3001\u6a21\u677f\u7279\u5316\u7684\u6838\u5fc3\u6982\u5ff5\u4e8c\u3001\u6a21\u677f\u7279\u5316\u7684\u5206\u7c7b2.1 \u5168\u7279\u53162.1.1 \u7c7b\u6a21\u677f\u5168\u7279\u5316\u793a\u4f8b2.1.2 \u51fd\u6570\u6a21\u677f\u5168\u7279\u5316\u793a\u4f8b2.2 \u504f\u7279\u53162.2.1 \u7c7b\u6a21\u677f\u504f\u7279\u5316\u793a\u4f8b&#xff08;\u90e8\u5206\u53c2\u6570\u7279\u5316&#xff09;\u4e09\u3001\u6a21\u677f\u7279\u5316\u7684\u5339\u914d\u89c4\u5219\u56db\u3001\u6a21\u677f\u7279\u5316\u7684\u4f7f\u7528\u573a\u666f4.1 \u89e3\u51b3\u7279\u5b9a\u7c7b\u578b\u7684\u903b\u8f91\u5dee\u5f024.2 \u63d0\u5347\u4ee3\u7801\u6548\u73874.3 \u907f\u514d\u7c7b\u578b\u8f6c\u6362\u9519\u8bef4.4 \u7ecf\u5178\u573a\u666f&#xff1a;\u7c7b\u578b\u8403\u53d6&#xff08;Type Traits&#xff09;4.5 \u7ecf\u5178\u573a\u666f&#xff1a;\u6cdb\u578b\u7b97\u6cd5\u7684\u7c7b\u578b\u9002\u914d\u4e94\u3001\u6ce8\u610f\u4e8b\u9879","og_url":"https:\/\/www.wsisp.com\/helps\/73842.html","og_site_name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","article_published_time":"2026-02-08T05:33:16+00:00","author":"admin","twitter_card":"summary_large_image","twitter_misc":{"\u4f5c\u8005":"admin","\u9884\u8ba1\u9605\u8bfb\u65f6\u95f4":"6 \u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.wsisp.com\/helps\/73842.html","url":"https:\/\/www.wsisp.com\/helps\/73842.html","name":"\u3010C++\u3011C++\u6a21\u677f\u7279\u5316\uff1a\u7cbe\u51c6\u5b9a\u5236\u6cdb\u578b\u903b\u8f91 - \u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","isPartOf":{"@id":"https:\/\/www.wsisp.com\/helps\/#website"},"datePublished":"2026-02-08T05:33:16+00:00","dateModified":"2026-02-08T05:33:16+00:00","author":{"@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41"},"breadcrumb":{"@id":"https:\/\/www.wsisp.com\/helps\/73842.html#breadcrumb"},"inLanguage":"zh-Hans","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.wsisp.com\/helps\/73842.html"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.wsisp.com\/helps\/73842.html#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u9996\u9875","item":"https:\/\/www.wsisp.com\/helps"},{"@type":"ListItem","position":2,"name":"\u3010C++\u3011C++\u6a21\u677f\u7279\u5316\uff1a\u7cbe\u51c6\u5b9a\u5236\u6cdb\u578b\u903b\u8f91"}]},{"@type":"WebSite","@id":"https:\/\/www.wsisp.com\/helps\/#website","url":"https:\/\/www.wsisp.com\/helps\/","name":"\u7f51\u7855\u4e92\u8054\u5e2e\u52a9\u4e2d\u5fc3","description":"\u9999\u6e2f\u670d\u52a1\u5668_\u9999\u6e2f\u4e91\u670d\u52a1\u5668\u8d44\u8baf_\u670d\u52a1\u5668\u5e2e\u52a9\u6587\u6863_\u670d\u52a1\u5668\u6559\u7a0b","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.wsisp.com\/helps\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"zh-Hans"},{"@type":"Person","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/358e386c577a3ab51c4493330a20ad41","name":"admin","image":{"@type":"ImageObject","inLanguage":"zh-Hans","@id":"https:\/\/www.wsisp.com\/helps\/#\/schema\/person\/image\/","url":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","contentUrl":"https:\/\/gravatar.wp-china-yes.net\/avatar\/?s=96&d=mystery","caption":"admin"},"sameAs":["http:\/\/wp.wsisp.com"],"url":"https:\/\/www.wsisp.com\/helps\/author\/admin"}]}},"_links":{"self":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/73842","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/comments?post=73842"}],"version-history":[{"count":0,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/posts\/73842\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/media?parent=73842"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/categories?post=73842"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/tags?post=73842"},{"taxonomy":"topic","embeddable":true,"href":"https:\/\/www.wsisp.com\/helps\/wp-json\/wp\/v2\/topic?post=73842"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}