152 lines
9.4 KiB
HTML
152 lines
9.4 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>实验性库头文件 <experimental/ranges/utility></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_experimental_ranges_utility 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%">实验性库头文件</span> <experimental/ranges/utility></h1>
|
|
<div id="bodyContent">
|
|
<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-header.html">header</a>‎ | <a href="cpp-header-experimental.html">experimental</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-experimental-ranges.html">范围</a>库的一部分。</p>
|
|
<h3><span class="mw-headline" id=".E5.B7.A5.E5.85.B7.E7.BB.84.E4.BB.B6">工具组件</span></h3>
|
|
<table class="t-dsc-begin">
|
|
<tr class="t-dsc-header">
|
|
<td colspan="2">
|
|
<div>定义于命名空间 <code>std::experimental::ranges</code></div>
|
|
</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="cpp-experimental-ranges-utility-swap.html"><span class="t-lines"><span>swap</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>交换两个对象的值<br />
|
|
<span class="t-mark">(定制点对象)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="cpp-experimental-ranges-utility-exchange.html"><span class="t-lines"><span>exchange</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>以新值替换实参并返回其先前的值<br />
|
|
<span class="t-mark">(函数模板)</span></td>
|
|
</tr>
|
|
</table>
|
|
<h3><span class="mw-headline" id=".E6.A0.87.E7.AD.BE.E6.A6.82.E5.BF.B5">标签概念</span></h3>
|
|
<table class="t-dsc-begin">
|
|
<tr class="t-dsc-header">
|
|
<td colspan="2">
|
|
<div>定义于命名空间 <code>std::experimental::ranges</code></div>
|
|
</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="cpp-experimental-ranges-utility-TagSpecifier.html"><span class="t-lines"><span>TagSpecifier</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>指定类型为标签说明符<br />
|
|
<span class="t-mark">(概念)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="cpp-experimental-ranges-utility-TaggedType.html"><span class="t-lines"><span>TaggedType</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>指定类型表示一个标签说明符及其元素类型<br />
|
|
<span class="t-mark">(概念)</span></td>
|
|
</tr>
|
|
</table>
|
|
<h3><span class="mw-headline" id=".E5.B8.A6.E6.A0.87.E7.AD.BE.E5.AF.B9.E5.81.B6">带标签对偶</span></h3>
|
|
<table class="t-dsc-begin">
|
|
<tr class="t-dsc-header">
|
|
<td colspan="2">
|
|
<div>定义于命名空间 <code>std::experimental::ranges</code></div>
|
|
</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="cpp-experimental-ranges-utility-tagged.html"><span class="t-lines"><span>tagged</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>为元组式类型增加具名访问器<br />
|
|
<span class="t-mark">(类模板)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="cpp-experimental-ranges-utility-tagged_pair.html"><span class="t-lines"><span>tagged_pair</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>有标签 <span class="t-lc"><a href="cpp-utility-pair.html">std::pair</a></span> 的别名模版<br />
|
|
<span class="t-mark">(别名模板)</span></td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="cpp-experimental-ranges-utility-make_tagged_pair.html"><span class="t-lines"><span>make_tagged_pair</span></span></a></div>
|
|
</div>
|
|
</td>
|
|
<td>用于创建 <code>tagged_pair</code> 的便利函数<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">namespace</span> experimental <span class="br0">{</span> <span class="kw1">namespace</span> ranges <span class="br0">{</span> <span class="kw1">inline</span> <span class="kw1">namespace</span> v1 <span class="br0">{</span>
|
|
|
|
<span class="kw1">namespace</span> <span class="br0">{</span>
|
|
<span class="kw4">constexpr</span> <span class="coMULTI">/* 未指明 */</span> swap <span class="sy1">=</span> <span class="coMULTI">/* 未指明 */</span><span class="sy4">;</span>
|
|
<span class="br0">}</span>
|
|
|
|
<span class="kw1">template</span><span class="sy1"><</span>MoveConstructible T, <span class="kw1">class</span> U <span class="sy1">=</span> T<span class="sy1">></span>
|
|
requires Assignable<span class="sy1"><</span>T<span class="sy3">&</span>, U<span class="sy1">></span>
|
|
<span class="kw4">constexpr</span> T exchange<span class="br0">(</span>T<span class="sy3">&</span> obj, U<span class="sy3">&&</span> new_val<span class="br0">)</span> <span class="kw1">noexcept</span><span class="br0">(</span><span class="coMULTI">/* 见定义 */</span><span class="br0">)</span><span class="sy4">;</span>
|
|
|
|
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> T<span class="sy1">></span>
|
|
concept <span class="kw4">bool</span> TagSpecifier <span class="sy1">=</span> <span class="coMULTI">/* 见定义 */</span><span class="sy4">;</span>
|
|
|
|
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> F<span class="sy1">></span>
|
|
concept <span class="kw4">bool</span> TaggedType <span class="sy1">=</span> <span class="coMULTI">/* 见定义 */</span><span class="sy4">;</span>
|
|
|
|
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Base, TagSpecifier... <span class="me1">Tags</span><span class="sy1">></span>
|
|
requires sizeof...<span class="br0">(</span>Tags<span class="br0">)</span> <span class="sy1"><=</span> <a href="cpp-utility-tuple-tuple_size.html"><span class="kw1101">std::<span class="me2">tuple_size</span></span></a><span class="sy1"><</span>Base<span class="sy1">></span><span class="sy4">::</span><span class="me2">value</span>
|
|
<span class="kw1">struct</span> tagged<span class="sy4">;</span>
|
|
|
|
<span class="kw1">template</span> <span class="sy1"><</span>TaggedType T1, TaggedType T2<span class="sy1">></span>
|
|
<span class="kw1">using</span> tagged_pair <span class="sy1">=</span> <span class="coMULTI">/* 见定义 */</span><span class="sy4">;</span>
|
|
|
|
<span class="kw1">template</span> <span class="sy1"><</span>TagSpecifier Tag1, TagSpecifier Tag2, <span class="kw1">class</span> T1, <span class="kw1">class</span> T2<span class="sy1">></span>
|
|
<span class="kw4">constexpr</span> <span class="coMULTI">/* 见定义 */</span> make_tagged_pair<span class="br0">(</span>T1<span class="sy3">&&</span> x, T2<span class="sy3">&&</span> y<span class="br0">)</span><span class="sy4">;</span>
|
|
|
|
<span class="br0">}</span><span class="br0">}</span><span class="br0">}</span><span class="br0">}</span>
|
|
|
|
<span class="kw1">namespace</span> std <span class="br0">{</span>
|
|
|
|
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Base, <span class="kw1">class</span>... <span class="me1">Tags</span><span class="sy1">></span>
|
|
<span class="kw1">struct</span> tuple_size<span class="sy1"><</span>experimental<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">tagged</span><span class="sy1"><</span>Base, Tags...<span class="sy1">>></span><span class="sy4">;</span>
|
|
|
|
<span class="kw1">template</span> <span class="sy1"><</span>size_t N, <span class="kw1">class</span> Base, <span class="kw1">class</span>... <span class="me1">Tags</span><span class="sy1">></span>
|
|
<span class="kw1">struct</span> tuple_element<span class="sy1"><</span>N, experimental<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">tagged</span><span class="sy1"><</span>Base, Tags...<span class="sy1">>></span><span class="sy4">;</span>
|
|
|
|
<span class="br0">}</span></pre></div>
|
|
</div>
|
|
</div>
|
|
<div class="visualClear"></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|