98 lines
8.7 KiB
HTML
98 lines
8.7 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>std::ranges::transform_view<V,F>::end</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_transform_view_end 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%">std::ranges::transform_view<V,F>::</span>end</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-transform_view.html">transform view</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="kw4">constexpr</span> <span class="coMULTI">/*sentinel*/</span><span class="sy1"><</span><span class="kw2">false</span><span class="sy1">></span> end<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span></span></div>
|
|
</td>
|
|
<td>(1)</td>
|
|
<td><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></td>
|
|
</tr>
|
|
<tr class="t-dcl t-since-cxx20">
|
|
<td>
|
|
<div><span class="mw-geshi cpp source-cpp"><span class="kw4">constexpr</span> <span class="coMULTI">/*iterator*/</span><span class="sy1"><</span><span class="kw2">false</span><span class="sy1">></span> end<span class="br0">(</span><span class="br0">)</span> requires ranges<span class="sy4">::</span><span class="me2">common_range</span><span class="sy1"><</span>V<span class="sy1">></span><span class="sy4">;</span></span></div>
|
|
</td>
|
|
<td>(2)</td>
|
|
<td><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></td>
|
|
</tr>
|
|
<tr class="t-dcl t-since-cxx20">
|
|
<td>
|
|
<div><span class="mw-geshi cpp source-cpp"><span class="kw4">constexpr</span> <span class="coMULTI">/*sentinel*/</span><span class="sy1"><</span><span class="kw2">true</span><span class="sy1">></span> end<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><br /></span>
|
|
<p> requires ranges<span class="sy4">::</span><span class="me2">range</span><span class="sy1"><</span><span class="kw4">const</span> V<span class="sy1">></span> <span class="sy3">&&</span><br /></p>
|
|
std<span class="sy4">::</span><span class="me2">regular_invocable</span><span class="sy1"><</span><span class="kw4">const</span> F<span class="sy3">&</span>, ranges<span class="sy4">::</span><span class="me2">range_reference_t</span><span class="sy1"><</span><span class="kw4">const</span> V<span class="sy1">>></span><span class="sy4">;</span></div>
|
|
</td>
|
|
<td>(3)</td>
|
|
<td><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></td>
|
|
</tr>
|
|
<tr class="t-dcl t-since-cxx20">
|
|
<td>
|
|
<div><span class="mw-geshi cpp source-cpp"><span class="kw4">constexpr</span> <span class="coMULTI">/*iterator*/</span><span class="sy1"><</span><span class="kw2">true</span><span class="sy1">></span> end<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><br /></span>
|
|
<p> requires ranges<span class="sy4">::</span><span class="me2">common_range</span><span class="sy1"><</span><span class="kw4">const</span> V<span class="sy1">></span> <span class="sy3">&&</span><br /></p>
|
|
std<span class="sy4">::</span><span class="me2">regular_invocable</span><span class="sy1"><</span><span class="kw4">const</span> F<span class="sy3">&</span>, ranges<span class="sy4">::</span><span class="me2">range_reference_t</span><span class="sy1"><</span><span class="kw4">const</span> V<span class="sy1">>></span><span class="sy4">;</span></div>
|
|
</td>
|
|
<td>(4)</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>返回表示 <code>transform_view</code> 末尾的<a href="cpp-ranges-transform_view-sentinel.html">哨位</a>或<a href="cpp-ranges-transform_view-iterator.html">迭代器</a>。</p>
|
|
<p>令 <code>base_</code> 表示底层视图：</p>
|
|
<div class="t-li1"><span class="t-li">1)</span> 等价于 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">return</span> <span class="coMULTI">/*sentinel*/</span><span class="sy1"><</span><span class="kw2">false</span><span class="sy1">></span><span class="br0">{</span>ranges<span class="sy4">::</span><span class="me2">end</span><span class="br0">(</span>base_<span class="br0">)</span><span class="br0">}</span><span class="sy4">;</span></span></span> 。</div>
|
|
<div class="t-li1"><span class="t-li">2)</span> 等价于 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">return</span> <span class="coMULTI">/*iterator*/</span><span class="sy1"><</span><span class="kw2">false</span><span class="sy1">></span><span class="br0">{</span><span class="sy2">*</span>this, ranges<span class="sy4">::</span><span class="me2">end</span><span class="br0">(</span>base_<span class="br0">)</span><span class="br0">}</span><span class="sy4">;</span></span></span> 。</div>
|
|
<div class="t-li1"><span class="t-li">3)</span> 等价于 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">return</span> <span class="coMULTI">/*sentinel*/</span><span class="sy1"><</span><span class="kw2">true</span><span class="sy1">></span><span class="br0">{</span>ranges<span class="sy4">::</span><span class="me2">end</span><span class="br0">(</span>base_<span class="br0">)</span><span class="br0">}</span><span class="sy4">;</span></span></span> 。</div>
|
|
<div class="t-li1"><span class="t-li">4)</span> 等价于 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">return</span> <span class="coMULTI">/*iterator*/</span><span class="sy1"><</span><span class="kw2">true</span><span class="sy1">></span><span class="br0">{</span><span class="sy2">*</span>this, ranges<span class="sy4">::</span><span class="me2">end</span><span class="br0">(</span>base_<span class="br0">)</span><span class="br0">}</span><span class="sy4">;</span></span></span> 。</div>
|
|
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
|
|
<p>（无）</p>
|
|
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
|
|
<div class="t-li1"><span class="t-li">1,3)</span> 与尾迭代器比较相等的哨位。</div>
|
|
<div class="t-li1"><span class="t-li">2,4)</span> 指向末元素后一元素的迭代器。</div>
|
|
<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">注解</span></h3>
|
|
<p><code>end()</code> 返回迭代器当且仅当底层视图为 <a href="cpp-ranges-common_range.html"><code>common_range</code></a> ： <code>tranform_view<V,F></code> 凡在 <code>V</code> 实现 <a href="cpp-ranges-common_range.html"><code>common_range</code></a> 时亦如此。</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>
|
|
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
|
|
<table class="t-dsc-begin">
|
|
<tr class="t-dsc">
|
|
<td>
|
|
<div class="t-dsc-member-div">
|
|
<div><a href="cpp-ranges-transform_view-begin.html"><span class="t-lines"><span>begin</span></span></a></div>
|
|
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
|
|
</div>
|
|
</td>
|
|
<td>返回指向起始的迭代器<br />
|
|
<span class="t-mark">(公开成员函数)</span></td>
|
|
</tr>
|
|
</table>
|
|
</div>
|
|
<div class="visualClear"></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|