91 lines
5.9 KiB
HTML
91 lines
5.9 KiB
HTML
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<title>std::regex_iterator<BidirIt,CharT,Traits>::operator==,operator!=</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_regex_regex_iterator_operator_cmp skin-cppreference2 action-view cpp-navbar">
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::regex_iterator<BidirIt,CharT,Traits>::</span>operator==,operator!=</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-regex.html">regex</a>‎ | <a href="cpp-regex-regex_iterator.html">regex iterator</a></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span><span class="kw4">const</span> regex_iterator<span class="sy3">&</span> rhs<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span></span></div>
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</td>
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<td>(1)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">bool</span> operator<span class="sy3">!</span><span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> regex_iterator<span class="sy3">&</span> rhs<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span></span></div>
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</td>
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<td>(2)</td>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span><br />
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<span class="t-mark-rev t-until-cxx20">(C++20 前)</span></td>
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<td></td>
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<td></td>
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<td></td>
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<p>比较二个 <code>regex_iterator</code> 。</p>
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<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>
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</td>
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<td><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></td>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<table class="t-par-begin">
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<td>rhs</td>
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<td>-</td>
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<td>要比较的 <code>regex_iterator</code></td>
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</tr>
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</table>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
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<p>为说明起见，假设 <code>regex_iterator</code> 含下列成员：</p>
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<ul>
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<li><code>BidirIt begin</code>;</li>
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<li><code>BidirIt end</code>;</li>
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<li><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw4">const</span> regex_type <span class="sy2">*</span>pregex<span class="sy4">;</span></span></span></li>
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<li><span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-regex-match_flag_type.html"><span class="kw2038">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags<span class="sy4">;</span></span></span></li>
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<li><span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-regex-match_results.html"><span class="kw2007">std::<span class="me2">match_results</span></span></a><span class="sy1"><</span>BidirIt<span class="sy1">></span> match<span class="sy4">;</span></span></span></li>
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</ul>
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<div class="t-li1"><span class="t-li">1)</span> 若 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span>this</span></span> 和 <code>rhs</code> 都是序列尾迭代器，或若下列条件全为 true 则返回 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> ：
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<ul>
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<li><span class="t-c"><span class="mw-geshi cpp source-cpp">begin <span class="sy1">==</span> rhs.<span class="me1">begin</span></span></span></li>
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<li><span class="t-c"><span class="mw-geshi cpp source-cpp">end <span class="sy1">==</span> rhs.<span class="me1">end</span></span></span></li>
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<li><span class="t-c"><span class="mw-geshi cpp source-cpp">pregex <span class="sy1">==</span> rhs.<span class="me1">pregex</span></span></span></li>
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<li><span class="t-c"><span class="mw-geshi cpp source-cpp">flags <span class="sy1">==</span> rhs.<span class="me1">flags</span></span></span></li>
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<li><span class="t-c"><span class="mw-geshi cpp source-cpp">match<span class="br0">[</span><span class="nu0">0</span><span class="br0">]</span> <span class="sy1">==</span> rhs.<span class="me1">match</span><span class="br0">[</span><span class="nu0">0</span><span class="br0">]</span></span></span></li>
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</ul>
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</div>
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<div class="t-li1"><span class="t-li">2)</span> 返回 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy3">!</span><span class="br0">(</span><span class="sy2">*</span>this <span class="sy1">==</span> rhs<span class="br0">)</span></span></span></div>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
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<td class="mbox-text" style="">本节未完成<br />
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原因：暂无示例</td>
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