37 lines
2.1 KiB
HTML
37 lines
2.1 KiB
HTML
<!DOCTYPE html>
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<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
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<head><meta http-equiv="x-ua-compatible" content="ie=edge">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<title>C++ 关键词：default</title>
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<link rel="stylesheet" href="ext.css" />
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<link rel="stylesheet" href="site_modules.css" />
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</head>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_keyword_default skin-cppreference2 action-view cpp-navbar">
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<div id="cpp-content-base">
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<div id="content"><a id="top"></a>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">C++ 关键词：</span>default</h1>
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<div id="bodyContent">
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-keyword.html">keyword</a></span></div>
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<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
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<h3><span class="mw-headline" id=".E7.94.A8.E6.B3.95">用法</span></h3>
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<ul>
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<li><a href="cpp-language-switch.html"><code>switch</code> 语句</a>：用于声明默认情况标号</li>
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</ul>
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<table class="t-rev-begin">
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<tr class="t-rev t-since-cxx11">
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<td>
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<ul>
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<li>显式默认化的函数定义：令编译器为某个类生成<a href="cpp-language-member_functions.html#.E7.89.B9.E6.AE.8A.E6.88.90.E5.91.98.E5.87.BD.E6.95.B0">特殊成员函数</a><span class="t-rev-inl t-since-cxx20"><span>或<a href="cpp-language-default_comparisons.html">比较运算符</a></span> <span><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></span></span>的显式指令。</li>
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</ul>
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</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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</tr>
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</table>
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</div>
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<div class="visualClear"></div>
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</div>
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</div>
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</div>
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</body>
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</html>
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