69 lines
4.7 KiB
HTML
69 lines
4.7 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>operator==(ranges::elements_view::sentinel)</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_ranges_elements_view_sentinel_operator_cmp skin-cppreference2 action-view cpp-navbar">
|
|
<div id="cpp-content-base">
|
|
<div id="content"><a id="top"></a>
|
|
<h1 id="firstHeading" class="firstHeading">operator==<small>(ranges::elements_view::<i>sentinel</i>)</small></h1>
|
|
<div id="bodyContent">
|
|
<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-ranges.html">ranges</a>‎ | <a href="cpp-ranges-elements_view.html">elements view</a>‎ | <a href="cpp-ranges-elements_view-sentinel.html">sentinel</a></span></div>
|
|
<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
|
|
<table class="t-dcl-begin">
|
|
<tbody>
|
|
<tr class="t-dcl t-since-cxx20">
|
|
<td>
|
|
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw4">bool</span> OtherConst <span class="sy1">></span><br /></span>
|
|
<p> requires std<span class="sy4">::</span><span class="me2">sentinel_for</span><span class="sy1"><</span>ranges<span class="sy4">::</span><span class="me2">sentinel_t</span><span class="sy1"><</span>Base<span class="sy1">></span>,<br />
|
|
ranges<span class="sy4">::</span><span class="me2">iterator_t</span><span class="sy1"><</span><span class="coMULTI">/*maybe-const*/</span><span class="sy1"><</span>OtherConst, V<span class="sy1">>>></span><br />
|
|
<span class="kw1">friend</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span> <span class="kw4">const</span> <span class="coMULTI">/*iterator*/</span><span class="sy1"><</span>OtherConst<span class="sy1">></span><span class="sy3">&</span> x,<br /></p>
|
|
<span class="kw4">const</span> <span class="coMULTI">/*sentinel*/</span><span class="sy3">&</span> y <span class="br0">)</span><span class="sy4">;</span></div>
|
|
</td>
|
|
<td class="t-dcl-nopad"></td>
|
|
<td><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></td>
|
|
</tr>
|
|
<tr class="t-dcl-sep">
|
|
<td></td>
|
|
<td></td>
|
|
<td></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<p>比较 <code>x</code> 的底层迭代器与 <code>y</code> 的底层哨位。</p>
|
|
<p>此函数对通常<a href="cpp-language-unqualified_lookup.html">无限定</a>或<a href="cpp-language-qualified_lookup.html">有限定查找</a>不可见，而只能在 <code>elements_view::<i>sentinel</i><Const></code> 为参数的关联类时由<a href="cpp-language-adl.html">实参依赖查找</a>找到。</p>
|
|
<p><code>!=</code> 运算符从 <code>operator==</code> <a href="cpp-language-operators.html#.E5.85.B3.E7.B3.BB.E8.BF.90.E7.AE.97.E7.AC.A6">合成</a>。</p>
|
|
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
|
|
<table class="t-par-begin">
|
|
<tr class="t-par">
|
|
<td>x</td>
|
|
<td>-</td>
|
|
<td>要比较的<a href="cpp-ranges-elements_view-iterator.html">迭代器</a></td>
|
|
</tr>
|
|
<tr class="t-par">
|
|
<td>y</td>
|
|
<td>-</td>
|
|
<td>要比较的哨位</td>
|
|
</tr>
|
|
</table>
|
|
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
|
|
<p><span class="t-c"><span class="mw-geshi cpp source-cpp">x.<span class="me1">current_</span> <span class="sy1">==</span> y.<span class="me1">end_</span></span></span> ，其中 <code><i>current_</i></code> 代表底层迭代器， <code><i>end_</i></code> 代表底层哨位。</p>
|
|
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
|
|
<table class="metadata plainlinks ambox mbox-small-left ambox-notice" style="">
|
|
<tr>
|
|
<td class="mbox-empty-cell"></td>
|
|
<td class="mbox-text" style="">本节未完成<br />
|
|
原因：暂无示例</td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
<div class="visualClear"></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|