137 lines
10 KiB
HTML
137 lines
10 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>C++ 具名要求：可逆容器 (ReversibleContainer)</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_named_req_ReversibleContainer 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%">C++ 具名要求：</span><span style="font-style:italic">可逆容器</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(ReversibleContainer)</span></h1>
|
|
<div id="bodyContent">
|
|
<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-named_req.html">named req</a></span></div>
|
|
<div id="mw-content-text" lang="zh" dir="ltr" class="mw-content-ltr" xml:lang="zh">
|
|
<p><strong class="selflink"><span style="font-style:italic">可逆容器</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(ReversibleContainer)</span></strong> 是拥有满足<a href="cpp-named_req-BidirectionalIterator.html"><span style="font-style:italic">老式双向迭代器</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(LegacyBidirectionalIterator)</span></a> 或<a href="cpp-named_req-RandomAccessIterator.html"><span style="font-style:italic">老式随机访问迭代器</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(LegacyRandomAccessIterator)</span></a> 要求的迭代器的<a href="cpp-named_req-Container.html"><span style="font-style:italic">容器</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(Container)</span></a> 。这些迭代器允许对<strong class="selflink"><span style="font-style:italic">可逆容器</span> <span style="font-family: Georgia, 'DejaVu Serif', serif; font-style:italic">(ReversibleContainer)</span></strong> 进行逆序迭代。</p>
|
|
<h3><span class="mw-headline" id=".E8.A6.81.E6.B1.82">要求</span></h3>
|
|
<table class="t-dsc-begin">
|
|
<tr class="t-dsc">
|
|
<td><code><b>X</b></code></td>
|
|
<td>容器类型</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td><code><b>T</b></code></td>
|
|
<td>元素类型</td>
|
|
</tr>
|
|
<tr class="t-dsc">
|
|
<td><code><b>a</b></code></td>
|
|
<td><code><b>X</b></code> 类型对象</td>
|
|
</tr>
|
|
</table>
|
|
<h4><span class="mw-headline" id=".E7.B1.BB.E5.9E.8B">类型</span></h4>
|
|
<table class="wikitable">
|
|
<tr>
|
|
<th>表达式</th>
|
|
<th>返回类型</th>
|
|
<th>条件</th>
|
|
<th>复杂度</th>
|
|
</tr>
|
|
<tr>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">X<span class="sy4">::</span><span class="me2">reverse_iterator</span></span></span></td>
|
|
<td>值类型为 <code>T</code> 的迭代器类型</td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">reverse_iterator<span class="sy1"><</span>iterator<span class="sy1">></span></span></span></td>
|
|
<td>编译时</td>
|
|
</tr>
|
|
<tr>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">X<span class="sy4">::</span><span class="me2">const_reverse_iterator</span></span></span></td>
|
|
<td>值类型为 <code>T</code> 的常迭代器类型</td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">reverse_iterator<span class="sy1"><</span>const_iterator<span class="sy1">></span></span></span></td>
|
|
<td>编译时</td>
|
|
</tr>
|
|
</table>
|
|
<h4><span class="mw-headline" id=".E6.96.B9.E6.B3.95">方法</span></h4>
|
|
<table class="wikitable">
|
|
<tr>
|
|
<th>表达式</th>
|
|
<th>返回类型</th>
|
|
<th>条件</th>
|
|
<th>复杂度</th>
|
|
</tr>
|
|
<tr>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">a.<span class="me1">rbegin</span><span class="br0">(</span><span class="br0">)</span></span></span></td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">reverse_iterator</span></span>；<br />
|
|
对常数 <code>a</code> 为 <span class="t-c"><span class="mw-geshi cpp source-cpp">const_reverse_iterator</span></span></td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">reverse_iterator<span class="br0">(</span>end<span class="br0">(</span><span class="br0">)</span><span class="br0">)</span></span></span></td>
|
|
<td>常数</td>
|
|
</tr>
|
|
<tr>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">a.<span class="me1">rend</span><span class="br0">(</span><span class="br0">)</span></span></span></td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">reverse_iterator</span></span> ；<br />
|
|
对常数 <code>a</code> 为 <span class="t-c"><span class="mw-geshi cpp source-cpp">const_reverse_iterator</span></span></td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">reverse_iterator<span class="br0">(</span>begin<span class="br0">(</span><span class="br0">)</span><span class="br0">)</span></span></span></td>
|
|
<td>常数</td>
|
|
</tr>
|
|
<tr>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">a.<span class="me1">crbegin</span><span class="br0">(</span><span class="br0">)</span></span></span></td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">const_reverse_iterator</span></span></td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">const_cast</span><span class="sy1"><</span>X <span class="kw4">const</span><span class="sy3">&</span><span class="sy1">></span><span class="br0">(</span>a<span class="br0">)</span>.<span class="me1">rbegin</span><span class="br0">(</span><span class="br0">)</span></span></span></td>
|
|
<td>常数</td>
|
|
</tr>
|
|
<tr>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">a.<span class="me1">crend</span><span class="br0">(</span><span class="br0">)</span></span></span></td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">const_reverse_iterator</span></span></td>
|
|
<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">const_cast</span><span class="sy1"><</span>X <span class="kw4">const</span><span class="sy3">&</span><span class="sy1">></span><span class="br0">(</span>a<span class="br0">)</span>.<span class="me1">rend</span><span class="br0">(</span><span class="br0">)</span></span></span></td>
|
|
<td>常数</td>
|
|
</tr>
|
|
</table>
|
|
<p><br /></p>
|
|
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
|
|
<div class="t-example">
|
|
<p>下列示例在（拥有随机访问迭代器的）vector 上逆序迭代。</p>
|
|
<div class="t-example-live-link"></div>
|
|
<div dir="ltr" class="mw-geshi" style="text-align: left;">
|
|
<div class="cpp source-cpp">
|
|
<pre class="de1"><span class="co2">#include <vector></span>
|
|
<span class="co2">#include <iostream></span>
|
|
|
|
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
|
|
<span class="br0">{</span>
|
|
<a href="cpp-container-vector.html"><span class="kw1269">std::<span class="me2">vector</span></span></a><span class="sy1"><</span><span class="kw4">int</span><span class="sy1">></span> v <span class="sy1">=</span> <span class="br0">{</span><span class="nu0">3</span>, <span class="nu0">1</span>, <span class="nu0">4</span>, <span class="nu0">1</span>, <span class="nu0">5</span>, <span class="nu0">9</span><span class="br0">}</span><span class="sy4">;</span>
|
|
|
|
<span class="kw1">for</span><span class="br0">(</span><a href="cpp-container-vector.html"><span class="kw1269">std::<span class="me2">vector</span></span></a><span class="sy1"><</span><span class="kw4">int</span><span class="sy1">></span><span class="sy4">::</span><span class="me2">reverse_iterator</span> i <span class="sy1">=</span> v.<span class="me1">rbegin</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> i <span class="sy3">!</span><span class="sy1">=</span> v.<span class="me1">rend</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> <span class="sy2">++</span>i<span class="br0">)</span> <span class="br0">{</span>
|
|
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1"><<</span> <span class="sy2">*</span>i <span class="sy1"><<</span> <span class="st0">'<span class="es1">\n</span>'</span><span class="sy4">;</span>
|
|
<span class="br0">}</span>
|
|
<span class="br0">}</span></pre></div>
|
|
</div>
|
|
<p>输出：</p>
|
|
<div dir="ltr" class="mw-geshi" style="text-align: left;">
|
|
<div class="text source-text">
|
|
<pre class="de1">9
|
|
5
|
|
1
|
|
4
|
|
1
|
|
3</pre></div>
|
|
</div>
|
|
</div>
|
|
<p><br /></p>
|
|
<h3><span class="mw-headline" id=".E6.A0.87.E5.87.86.E5.BA.93">标准库</span></h3>
|
|
<ul>
|
|
<li><span class="t-lc"><a href="cpp-container-array.html">std::array</a></span></li>
|
|
<li><span class="t-lc"><a href="cpp-container-deque.html">std::deque</a></span></li>
|
|
<li><span class="t-lc"><a href="cpp-container-list.html">std::list</a></span></li>
|
|
<li><span class="t-lc"><a href="cpp-container-vector.html">std::vector</a></span></li>
|
|
<li><span class="t-lc"><a href="cpp-container-map.html">std::map</a></span></li>
|
|
<li><span class="t-lc"><a href="cpp-container-multimap.html">std::multimap</a></span></li>
|
|
<li><span class="t-lc"><a href="cpp-container-set.html">std::set</a></span></li>
|
|
<li><span class="t-lc"><a href="cpp-container-multiset.html">std::multiset</a></span></li>
|
|
</ul>
|
|
</div>
|
|
<div class="visualClear"></div>
|
|
</div>
|
|
</div>
|
|
</div>
|
|
</body>
|
|
</html>
|