92 lines
6.4 KiB
HTML
92 lines
6.4 KiB
HTML
<!DOCTYPE html>
|
|
<html lang="zh" dir="ltr" class="client-nojs" xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh">
|
|
<head><meta http-equiv="x-ua-compatible" content="ie=edge">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
<title>标准库头文件 <initializer_list></title>
|
|
<link rel="stylesheet" href="ext.css" />
|
|
<link rel="stylesheet" href="site_modules.css" />
|
|
</head>
|
|
<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_header_initializer_list skin-cppreference2 action-view cpp-navbar">
|
|
<div id="cpp-content-base">
|
|
<div id="content"><a id="top"></a>
|
|
<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">标准库头文件</span> <initializer_list></h1>
|
|
<div id="bodyContent">
|
|
<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-header.html">header</a></span></div>
|
|
<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
|
|
<p>此头文件是<a href="cpp-utility.html">工具</a>库的一部分。</p>
|
|
<table class="t-dsc-begin">
|
|
<tr>
|
|
<td colspan="2">
|
|
<h3><span class="mw-headline" id=".E7.B1.BB">类</span></h3>
|
|
</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="cpp-utility-initializer_list.html"><span class="t-lines"><span>initializer_list</span></span></a></div>
|
|
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
|
|
</div>
|
|
</td>
|
|
<td>在<a href="cpp-language-list_initialization.html">列表初始化</a>中创建临时数组然后引用它<br />
|
|
<span class="t-mark">(类模板)</span></td>
|
|
</tr>
|
|
<tr>
|
|
<td colspan="2">
|
|
<h3><span class="mw-headline" id=".E5.87.BD.E6.95.B0">函数</span></h3>
|
|
</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="cpp-utility-initializer_list-begin2.html"><span class="t-lines"><span>std::begin<span class="t-dsc-small">(std::initializer_list)</span></span></span></a></div>
|
|
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
|
|
</div>
|
|
</td>
|
|
<td>特化 <span class="t-lc"><a href="cpp-iterator-begin.html">std::begin</a></span><br />
|
|
<span class="t-mark">(函数模板)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="cpp-utility-initializer_list-end2.html"><span class="t-lines"><span>std::end<span class="t-dsc-small">(std::initializer_list)</span></span></span></a></div>
|
|
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
|
|
</div>
|
|
</td>
|
|
<td>特化 <span class="t-lc"><a href="cpp-iterator-end.html">std::end</a></span><br />
|
|
<span class="t-mark">(函数模板)</span></td>
|
|
</tr>
|
|
</table>
|
|
<h3><span class="mw-headline" id=".E6.A6.82.E8.A6.81">概要</span></h3>
|
|
<div dir="ltr" class="mw-geshi" style="text-align: left;">
|
|
<div class="cpp source-cpp">
|
|
<pre class="de1"><span class="kw1">namespace</span> std <span class="br0">{</span>
|
|
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> E<span class="sy1">></span> <span class="kw1">class</span> initializer_list <span class="br0">{</span>
|
|
<span class="kw1">public</span><span class="sy4">:</span>
|
|
<span class="kw1">using</span> value_type <span class="sy1">=</span> E<span class="sy4">;</span>
|
|
<span class="kw1">using</span> reference <span class="sy1">=</span> <span class="kw4">const</span> E<span class="sy3">&</span><span class="sy4">;</span>
|
|
<span class="kw1">using</span> const_reference <span class="sy1">=</span> <span class="kw4">const</span> E<span class="sy3">&</span><span class="sy4">;</span>
|
|
<span class="kw1">using</span> size_type <span class="sy1">=</span> size_t<span class="sy4">;</span>
|
|
|
|
<span class="kw1">using</span> iterator <span class="sy1">=</span> <span class="kw4">const</span> E<span class="sy2">*</span><span class="sy4">;</span>
|
|
<span class="kw1">using</span> const_iterator <span class="sy1">=</span> <span class="kw4">const</span> E<span class="sy2">*</span><span class="sy4">;</span>
|
|
|
|
<span class="kw4">constexpr</span> initializer_list<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
|
|
|
|
<span class="kw4">constexpr</span> size_t size<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span> <span class="co1">// 元素数量</span>
|
|
<span class="kw4">constexpr</span> <span class="kw4">const</span> E<span class="sy2">*</span> begin<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span> <span class="co1">// 首元素</span>
|
|
<span class="kw4">constexpr</span> <span class="kw4">const</span> E<span class="sy2">*</span> end<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span> <span class="co1">// 末元素后一位置</span>
|
|
<span class="br0">}</span><span class="sy4">;</span>
|
|
|
|
<span class="co1">// initializer_list 范围访问</span>
|
|
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> E<span class="sy1">></span> <span class="kw4">constexpr</span> <span class="kw4">const</span> E<span class="sy2">*</span> begin<span class="br0">(</span>initializer_list<span class="sy1"><</span>E<span class="sy1">></span> il<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
|
|
<span class="kw1">template</span><span class="sy1"><</span><span class="kw1">class</span> E<span class="sy1">></span> <span class="kw4">constexpr</span> <span class="kw4">const</span> E<span class="sy2">*</span> end<span class="br0">(</span>initializer_list<span class="sy1"><</span>E<span class="sy1">></span> il<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
|
|
<span class="br0">}</span></pre></div>
|
|
</div>
|
|
</div>
|
|
<div class="visualClear"></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|