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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>regex_match</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-regex.html">regex</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-regex.html">&lt;regex&gt;</a></code></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> BidirIt,<br /></span>
<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">class</span> Alloc, <span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br />
<span class="kw4">bool</span> regex_match<span class="br0">(</span> BidirIt first, BidirIt last,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href="cpp-regex-match_results.html"><span class="kw2007">std::<span class="me2">match_results</span></span></a><span class="sy1">&lt;</span>BidirIt,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> m,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-basic_regex.html"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> e,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href="cpp-regex-match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span><br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <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_default</span></span></a> <span class="br0">)</span><span class="sy4">;</span></div>
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<td>(1)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> BidirIt,<br /></span>
<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br />
<span class="kw4">bool</span> regex_match<span class="br0">(</span> BidirIt first, BidirIt last,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-basic_regex.html"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> e,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href="cpp-regex-match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span><br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <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_default</span></span></a> <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(2)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> CharT, <span class="kw1">class</span> Alloc, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> regex_match<span class="br0">(</span> <span class="kw4">const</span> CharT<span class="sy2">*</span> str,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href="cpp-regex-match_results.html"><span class="kw2007">std::<span class="me2">match_results</span></span></a><span class="sy1">&lt;</span><span class="kw4">const</span> CharT<span class="sy2">*</span>,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> m,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-basic_regex.html"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> e,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href="cpp-regex-match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span><br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <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_default</span></span></a> <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(3)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> STraits, <span class="kw1">class</span> SAlloc,<br /></span>
<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">class</span> Alloc, <span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br />
<span class="kw4">bool</span> regex_match<span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-string-basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT,STraits,SAlloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> s,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href="cpp-regex-match_results.html"><span class="kw2007">std::<span class="me2">match_results</span></span></a><span class="sy1">&lt;</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">typename</span> <a href="cpp-string-basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT,STraits,SAlloc<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">const_iterator</span>,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Alloc<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="sy1">&gt;</span><span class="sy3">&amp;</span> m,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-basic_regex.html"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> e,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href="cpp-regex-match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span><br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <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_default</span></span></a> <span class="br0">)</span><span class="sy4">;</span></div>
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<td>(4)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> regex_match<span class="br0">(</span> <span class="kw4">const</span> CharT<span class="sy2">*</span> str,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-basic_regex.html"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> e,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href="cpp-regex-match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span><br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <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_default</span></span></a> <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(5)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<td>
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> STraits, <span class="kw1">class</span> SAlloc,<br /></span>
<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br />
<span class="kw4">bool</span> regex_match<span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-string-basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT, STraits, SAlloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> s,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-basic_regex.html"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> e,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href="cpp-regex-match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span><br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <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_default</span></span></a> <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(6)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11">
<td>
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> STraits, <span class="kw1">class</span> SAlloc,<br /></span>
<p>&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">class</span> Alloc, <span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br />
<span class="kw4">bool</span> regex_match<span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-string-basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT,STraits,SAlloc<span class="sy1">&gt;</span><span class="sy3">&amp;&amp;</span>,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href="cpp-regex-match_results.html"><span class="kw2007">std::<span class="me2">match_results</span></span></a><span class="sy1">&lt;</span><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">typename</span> <a href="cpp-string-basic_string.html"><span class="kw1228">std::<span class="me2">basic_string</span></span></a><span class="sy1">&lt;</span>CharT,STraits,SAlloc<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">const_iterator</span>,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Alloc<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="sy1">&gt;</span><span class="sy3">&amp;</span>,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-basic_regex.html"><span class="kw1999">std::<span class="me2">basic_regex</span></span></a><span class="sy1">&lt;</span>CharT,Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span>,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <a href="cpp-regex-match_flag_type.html"><span class="kw2037">std::<span class="me2">regex_constants</span><span class="sy4">::</span><span class="me2">match_flag_type</span></span></a> flags <span class="sy1">=</span><br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <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_default</span></span></a> <span class="br0">)</span> <span class="sy1">=</span> delete<span class="sy4">;</span></div>
</td>
<td>(7)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<p>&#30830;&#23450;&#27491;&#21017;&#34920;&#36798;&#24335; <code>el</code> &#26159;&#21542;&#21305;&#37197;&#25972;&#20010;&#30446;&#26631;&#23383;&#31526;&#24207;&#21015;&#65292;&#23427;&#21487;&#33021;&#20197; <span class="t-lc"><a href="cpp-string-basic_string.html">std::string</a></span> &#12289; C &#23383;&#31526;&#20018;&#25110;&#36845;&#20195;&#22120;&#23545;&#34920;&#31034;&#12290;</p>
<div class="t-li1"><span class="t-li">1)</span> &#30830;&#23450;&#27491;&#21017;&#34920;&#36798;&#24335; <code>e</code> &#21644;&#25972;&#20010;&#30446;&#26631;&#23383;&#31526;&#24207;&#21015; <code>[first,last)</code> &#38388;&#26159;&#21542;&#26377;&#21305;&#37197;&#65292;&#19981;&#35745; <code>flags</code> &#30340;&#25928;&#26524;&#12290;&#30830;&#23450;&#26159;&#21542;&#26377;&#21305;&#37197;&#26102;&#65292;&#21482;&#32771;&#34385;&#21305;&#37197;&#25972;&#20010;&#23383;&#31526;&#24207;&#21015;&#30340;&#28508;&#22312;&#21305;&#37197;&#12290;&#21305;&#37197;&#32467;&#26524;&#36820;&#22238;&#20110; <code>m</code> &#12290;</div>
<div class="t-li1"><span class="t-li">2)</span> &#34920;&#29616;&#21516;&#19978;&#38754;&#30340; <span class="t-v">(1)</span> &#65292;&#30465;&#21435;&#21305;&#37197;&#32467;&#26524;&#12290;</div>
<div class="t-li1"><span class="t-li">3)</span> &#36820;&#22238; <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>str, str <span class="sy2">+</span> <a href="cpp-string-char_traits.html"><span class="kw1267">std::<span class="me2">char_traits</span></span></a><span class="sy1">&lt;</span>charT<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">length</span><span class="br0">(</span>str<span class="br0">)</span>, m, e, flags<span class="br0">)</span></span></span> &#12290;</div>
<div class="t-li1"><span class="t-li">4)</span> &#36820;&#22238; <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>s.<span class="me1">begin</span><span class="br0">(</span><span class="br0">)</span>, s.<span class="me1">end</span><span class="br0">(</span><span class="br0">)</span>, m, e, flags<span class="br0">)</span></span></span> &#12290;</div>
<div class="t-li1"><span class="t-li">5)</span> &#36820;&#22238; <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>str, str <span class="sy2">+</span> <a href="cpp-string-char_traits.html"><span class="kw1267">std::<span class="me2">char_traits</span></span></a><span class="sy1">&lt;</span>charT<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">length</span><span class="br0">(</span>str<span class="br0">)</span>, e, flags<span class="br0">)</span></span></span> &#12290;</div>
<div class="t-li1"><span class="t-li">6)</span> &#36820;&#22238; <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>s.<span class="me1">begin</span><span class="br0">(</span><span class="br0">)</span>, s.<span class="me1">end</span><span class="br0">(</span><span class="br0">)</span>, e, flags<span class="br0">)</span></span></span> &#12290;</div>
<div class="t-li1"><span class="t-li">7)</span> &#31105;&#27490;&#37325;&#36733; <span class="t-v">(4)</span> &#25509;&#21463;&#20020;&#26102; string &#65292;&#21542;&#21017;&#27492;&#20989;&#25968;&#20250;&#20197;&#31435;&#21363;&#21464;&#20026;&#38750;&#27861;&#30340; string &#36845;&#20195;&#22120;&#22635;&#20805; <code>match_results</code> <code>m</code> &#12290;</div>
<p>&#27880;&#24847; <code>regex_match</code> &#23558;&#21482;&#25104;&#21151;&#22320;&#21305;&#37197;&#27491;&#21017;&#34920;&#36798;&#24335;&#21040;<i>&#25972;&#20010;</i>&#23383;&#31526;&#24207;&#21015;&#65292;&#32780; <span class="t-lc"><a href="cpp-regex-regex_search.html">std::regex_search</a></span> &#23558;&#25104;&#21151;&#22320;&#21305;&#37197;&#23376;&#24207;&#21015;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
<table class="t-par-begin">
<tr class="t-par">
<td>first, last</td>
<td>-</td>
<td>&#24212;&#29992; regex &#21040;&#30340;&#30446;&#26631;&#23383;&#31526;&#33539;&#22260;&#65292;&#20197;&#36845;&#20195;&#22120;&#32473;&#23450;</td>
</tr>
<tr class="t-par">
<td>m</td>
<td>-</td>
<td>&#21305;&#37197;&#32467;&#26524;</td>
</tr>
<tr class="t-par">
<td>str</td>
<td>-</td>
<td>&#30446;&#26631;&#23383;&#31526;&#20018;&#65292;&#20197;&#31354;&#32456;&#27490; C &#39118;&#26684;&#23383;&#31526;&#20018;&#32473;&#20986;</td>
</tr>
<tr class="t-par">
<td>s</td>
<td>-</td>
<td>&#30446;&#26631;&#23383;&#31526;&#20018;&#65292;&#20197; <span class="t-lc"><a href="cpp-string-basic_string.html">std::basic_string</a></span> &#32473;&#20986;</td>
</tr>
<tr class="t-par">
<td>e</td>
<td>-</td>
<td>&#27491;&#21017;&#34920;&#36798;&#24335;</td>
</tr>
<tr class="t-par">
<td>flags</td>
<td>-</td>
<td>&#29992;&#20110;&#30830;&#23450;&#23558;&#22914;&#20309;&#36827;&#34892;&#21305;&#37197;&#30340;&#26631;&#24535;</td>
</tr>
<tr class="t-par-hitem">
<td colspan="3">&#31867;&#22411;&#35201;&#27714;</td>
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<tr class="t-par-req">
<td colspan="3">-
<div class="spacer"></div>
<code>BidirIt</code> &#24517;&#39035;&#28385;&#36275;<a href="cpp-named_req-BidirectionalIterator.html"><span style="font-style:italic">&#32769;&#24335;&#21452;&#21521;&#36845;&#20195;&#22120;</span> <span style="font-family: Georgia, &#39;DejaVu Serif&#39;, serif; font-style:italic">(LegacyBidirectionalIterator)</span></a> &#30340;&#35201;&#27714;&#12290;</td>
</tr>
</table>
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p>&#33509;&#21305;&#37197;&#23384;&#22312;&#21017;&#36820;&#22238; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> &#65292;&#21542;&#21017;&#36820;&#22238; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span> &#12290;&#20219;&#19968;&#24773;&#20917;&#19979;&#65292;&#20197;&#19979;&#21015;&#26041;&#24335;&#26356;&#26032;&#23545;&#35937; <code>m</code> &#65306;</p>
<p>&#33509;&#21305;&#37197;&#19981;&#23384;&#22312;&#65306;</p>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td colspan="2"><span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">ready</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> <span class="kw2">true</span></span></span></td>
</tr>
<tr class="t-dsc">
<td colspan="2"><span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">empty</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> <span class="kw2">true</span></span></span></td>
</tr>
<tr class="t-dsc">
<td colspan="2"><span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> <span class="nu0">0</span></span></span></td>
</tr>
</table>
<p>&#33509;&#21305;&#37197;&#23384;&#22312;&#65306;</p>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">ready</span><span class="br0">(</span><span class="br0">)</span></span></span></td>
<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span></td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">empty</span><span class="br0">(</span><span class="br0">)</span></span></span></td>
<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span></td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span></span></span></td>
<td><a href="cpp-regex-ecmascript.html#.E5.AD.90.E8.A1.A8.E8.BE.BE.E5.BC.8F">&#26377;&#26631;&#35760;&#23376;&#34920;&#36798;&#24335;</a>&#25968;&#21152; 1 &#65292;&#21363; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="nu0">1</span><span class="sy2">+</span>e.<span class="me1">mark_count</span><span class="br0">(</span><span class="br0">)</span></span></span></td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">prefix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">first</span></span></span></td>
<td><code>first</code></td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">prefix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">second</span></span></span></td>
<td><code>first</code></td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">prefix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">matched</span></span></span></td>
<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span> &#65288;&#21305;&#37197;&#21069;&#32512;&#20026;&#31354;&#65289;</td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">suffix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">first</span></span></span></td>
<td><code>last</code></td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">suffix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">second</span></span></span></td>
<td><code>last</code></td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m.<span class="me1">suffix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">matched</span></span></span></td>
<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span> &#65288;&#21305;&#37197;&#21069;&#32512;&#20026;&#31354;&#65289;</td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m<span class="br0">[</span><span class="nu0">0</span><span class="br0">]</span>.<span class="me1">first</span></span></span></td>
<td><code>first</code></td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m<span class="br0">[</span><span class="nu0">0</span><span class="br0">]</span>.<span class="me1">second</span></span></span></td>
<td><code>last</code></td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m<span class="br0">[</span><span class="nu0">0</span><span class="br0">]</span>.<span class="me1">matched</span></span></span></td>
<td><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> &#65288;&#21305;&#37197;&#25972;&#20010;&#24207;&#21015;&#65289;</td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m<span class="br0">[</span>n<span class="br0">]</span>.<span class="me1">first</span></span></span></td>
<td>&#21305;&#37197;<a href="cpp-regex-ecmascript.html#.E5.AD.90.E8.A1.A8.E8.BE.BE.E5.BC.8F">&#26377;&#26631;&#35760;&#23376;&#34920;&#36798;&#24335;</a> n &#30340;&#24207;&#21015;&#36215;&#22987;&#65292;&#25110;&#33509;&#35813;&#23376;&#34920;&#36798;&#24335;&#19981;&#21442;&#19982;&#21305;&#37197;&#21017;&#20026; <code>last</code></td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m<span class="br0">[</span>n<span class="br0">]</span>.<span class="me1">second</span></span></span></td>
<td>&#21305;&#37197;<a href="cpp-regex-ecmascript.html#.E5.AD.90.E8.A1.A8.E8.BE.BE.E5.BC.8F">&#26377;&#26631;&#35760;&#23376;&#34920;&#36798;&#24335;</a> n &#30340;&#24207;&#21015;&#32467;&#23614;&#65292;&#25110;&#33509;&#35813;&#23376;&#34920;&#36798;&#24335;&#19981;&#21442;&#19982;&#21305;&#37197;&#21017;&#20026; <code>last</code></td>
</tr>
<tr class="t-dsc">
<td><span class="t-c"><span class="mw-geshi cpp source-cpp">m<span class="br0">[</span>n<span class="br0">]</span>.<span class="me1">matched</span></span></span></td>
<td>&#33509;&#34920;&#36798;&#24335; n &#21442;&#19982;&#21305;&#37197;&#21017;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> &#65292;&#21542;&#21017;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">false</span></span></span></td>
</tr>
</table>
<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">&#27880;&#35299;</span></h3>
<p>&#22240;&#20026; <code>regex_match</code> &#21482;&#32771;&#34385;&#23436;&#20840;&#21305;&#37197;&#65292;&#25925;&#21516;&#19968; regex &#21487;&#33021;&#22312; <code>regex_match</code> &#21644; <span class="t-lc"><a href="cpp-regex-regex_search.html">std::regex_search</a></span> &#38388;&#32473;&#20986;&#19981;&#21516;&#30340;&#21305;&#37197;&#65306;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="cpp source-cpp">
<pre class="de1"><a href="cpp-regex-basic_regex.html"><span class="kw2000">std::<span class="me2">regex</span></span></a> re<span class="br0">(</span><span class="st0">&quot;Get|GetValue&quot;</span><span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-regex-match_results.html"><span class="kw2008">std::<span class="me2">cmatch</span></span></a> m<span class="sy4">;</span>
<a href="cpp-regex-regex_search.html"><span class="kw2012">std::<span class="me2">regex_search</span></span></a><span class="br0">(</span><span class="st0">&quot;GetValue&quot;</span>, m, re<span class="br0">)</span><span class="sy4">;</span> <span class="co1">// &#36820;&#22238; true &#65292;&#19988; m[0] &#21547; &quot;Get&quot;</span>
std<span class="sy4">::</span><span class="me2">regex_match</span> <span class="br0">(</span><span class="st0">&quot;GetValue&quot;</span>, m, re<span class="br0">)</span><span class="sy4">;</span> <span class="co1">// &#36820;&#22238; true &#65292;&#19988; m[0] &#21547; &quot;GetValue&quot;</span>
<a href="cpp-regex-regex_search.html"><span class="kw2012">std::<span class="me2">regex_search</span></span></a><span class="br0">(</span><span class="st0">&quot;GetValues&quot;</span>, m, re<span class="br0">)</span><span class="sy4">;</span> <span class="co1">// &#36820;&#22238; true &#65292;&#19988; m[0] &#21547; &quot;Get&quot;</span>
std<span class="sy4">::</span><span class="me2">regex_match</span> <span class="br0">(</span><span class="st0">&quot;GetValues&quot;</span>, m, re<span class="br0">)</span><span class="sy4">;</span> <span class="co1">// &#36820;&#22238; false</span></pre></div>
</div>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
<div class="t-example">
<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 &lt;iostream&gt;</span>
<span class="co2">#include &lt;string&gt;</span>
<span class="co2">#include &lt;regex&gt;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="co1">// &#31616;&#21333;&#27491;&#21017;&#34920;&#36798;&#24335;&#21305;&#37197;</span>
<a href="cpp-string-basic_string.html"><span class="kw1230">std::<span class="me2">string</span></span></a> fnames<span class="br0">[</span><span class="br0">]</span> <span class="sy1">=</span> <span class="br0">{</span><span class="st0">&quot;foo.txt&quot;</span>, <span class="st0">&quot;bar.txt&quot;</span>, <span class="st0">&quot;baz.dat&quot;</span>, <span class="st0">&quot;zoidberg&quot;</span><span class="br0">}</span><span class="sy4">;</span>
<a href="cpp-regex-basic_regex.html"><span class="kw2000">std::<span class="me2">regex</span></span></a> txt_regex<span class="br0">(</span><span class="st0">&quot;[a-z]+<span class="es1">\\</span>.txt&quot;</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">for</span> <span class="br0">(</span><span class="kw4">const</span> <span class="kw4">auto</span> <span class="sy3">&amp;</span>fname <span class="sy4">:</span> fnames<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">&lt;&lt;</span> fname <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;: &quot;</span> <span class="sy1">&lt;&lt;</span> std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>fname, txt_regex<span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="co1">// &#25552;&#21462;&#23376;&#21305;&#37197;</span>
<a href="cpp-regex-basic_regex.html"><span class="kw2000">std::<span class="me2">regex</span></span></a> base_regex<span class="br0">(</span><span class="st0">&quot;([a-z]+)<span class="es1">\\</span>.txt&quot;</span><span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-regex-match_results.html"><span class="kw2010">std::<span class="me2">smatch</span></span></a> base_match<span class="sy4">;</span>
<span class="kw1">for</span> <span class="br0">(</span><span class="kw4">const</span> <span class="kw4">auto</span> <span class="sy3">&amp;</span>fname <span class="sy4">:</span> fnames<span class="br0">)</span> <span class="br0">{</span>
<span class="kw1">if</span> <span class="br0">(</span>std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>fname, base_match, base_regex<span class="br0">)</span><span class="br0">)</span> <span class="br0">{</span>
<span class="co1">// &#39318;&#20010; sub_match &#26159;&#25972;&#20010;&#23383;&#31526;&#20018;&#65307;&#19979;&#20010;</span>
<span class="co1">// sub_match &#26159;&#39318;&#20010;&#26377;&#25324;&#21495;&#34920;&#36798;&#24335;&#12290;</span>
<span class="kw1">if</span> <span class="br0">(</span>base_match.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">==</span> <span class="nu0">2</span><span class="br0">)</span> <span class="br0">{</span>
<a href="cpp-regex-sub_match.html"><span class="kw2005">std::<span class="me2">ssub_match</span></span></a> base_sub_match <span class="sy1">=</span> base_match<span class="br0">[</span><span class="nu0">1</span><span class="br0">]</span><span class="sy4">;</span>
<a href="cpp-string-basic_string.html"><span class="kw1230">std::<span class="me2">string</span></span></a> base <span class="sy1">=</span> base_sub_match.<span class="me1">str</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> fname <span class="sy1">&lt;&lt;</span> <span class="st0">&quot; has a base of &quot;</span> <span class="sy1">&lt;&lt;</span> base <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="br0">}</span>
<span class="br0">}</span>
<span class="co1">// &#25552;&#21462;&#20960;&#20010;&#23376;&#21305;&#37197;</span>
<a href="cpp-regex-basic_regex.html"><span class="kw2000">std::<span class="me2">regex</span></span></a> pieces_regex<span class="br0">(</span><span class="st0">&quot;([a-z]+)<span class="es1">\\</span>.([a-z]+)&quot;</span><span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-regex-match_results.html"><span class="kw2010">std::<span class="me2">smatch</span></span></a> pieces_match<span class="sy4">;</span>
<span class="kw1">for</span> <span class="br0">(</span><span class="kw4">const</span> <span class="kw4">auto</span> <span class="sy3">&amp;</span>fname <span class="sy4">:</span> fnames<span class="br0">)</span> <span class="br0">{</span>
<span class="kw1">if</span> <span class="br0">(</span>std<span class="sy4">::</span><span class="me2">regex_match</span><span class="br0">(</span>fname, pieces_match, pieces_regex<span class="br0">)</span><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">&lt;&lt;</span> fname <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="kw1">for</span> <span class="br0">(</span>size_t i <span class="sy1">=</span> <span class="nu0">0</span><span class="sy4">;</span> i <span class="sy1">&lt;</span> pieces_match.<span class="me1">size</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-regex-sub_match.html"><span class="kw2005">std::<span class="me2">ssub_match</span></span></a> sub_match <span class="sy1">=</span> pieces_match<span class="br0">[</span>i<span class="br0">]</span><span class="sy4">;</span>
<a href="cpp-string-basic_string.html"><span class="kw1230">std::<span class="me2">string</span></span></a> piece <span class="sy1">=</span> sub_match.<span class="me1">str</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot; submatch &quot;</span> <span class="sy1">&lt;&lt;</span> i <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;: &quot;</span> <span class="sy1">&lt;&lt;</span> piece <span class="sy1">&lt;&lt;</span> <span class="st0">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="br0">}</span>
<span class="br0">}</span>
<span class="br0">}</span></pre></div>
</div>
<p>&#36755;&#20986;&#65306;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="text source-text">
<pre class="de1">foo.txt: 1
bar.txt: 1
baz.dat: 0
zoidberg: 0
foo.txt has a base of foo
bar.txt has a base of bar
foo.txt
submatch 0: foo.txt
submatch 1: foo
submatch 2: txt
bar.txt
submatch 0: bar.txt
submatch 1: bar
submatch 2: txt
baz.dat
submatch 0: baz.dat
submatch 1: baz
submatch 2: dat</pre></div>
</div>
</div>
<h3><span class="mw-headline" id=".E7.BC.BA.E9.99.B7.E6.8A.A5.E5.91.8A">&#32570;&#38519;&#25253;&#21578;</span></h3>
<p>&#19979;&#21015;&#26356;&#25913;&#34892;&#20026;&#30340;&#32570;&#38519;&#25253;&#21578;&#36861;&#28335;&#22320;&#24212;&#29992;&#20110;&#20197;&#21069;&#20986;&#29256;&#30340; C++ &#26631;&#20934;&#12290;</p>
<table class="dsctable" style="font-size:0.8em">
<tr>
<th>DR</th>
<th>&#24212;&#29992;&#20110;</th>
<th>&#20986;&#29256;&#26102;&#30340;&#34892;&#20026;</th>
<th>&#27491;&#30830;&#34892;&#20026;</th>
</tr>
<tr>
<td><a rel="nofollow" class="external text" href="https://cplusplus.github.io/LWG/issue2329">LWG 2329</a></td>
<td>C++11</td>
<td>&#26366;&#25509;&#21463; <code>basic_string</code> &#21491;&#20540;&#65292;&#36825;&#36739;&#21487;&#33021;&#23548;&#33268;&#24748;&#22402;&#36845;&#20195;&#22120;</td>
<td>&#36890;&#36807;&#34987;&#21024;&#38500;&#30340;&#37325;&#36733;&#25298;&#32477;</td>
</tr>
</table>
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
<table class="t-dsc-begin">
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-regex-basic_regex.html"><span class="t-lines"><span>basic_regex</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>&#27491;&#21017;&#34920;&#36798;&#24335;&#23545;&#35937;<br />
<span class="t-mark">(&#31867;&#27169;&#26495;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-regex-match_results.html"><span class="t-lines"><span>match_results</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>&#26631;&#35782;&#19968;&#20010;&#27491;&#21017;&#34920;&#36798;&#24335;&#21305;&#37197;&#65292;&#21253;&#21547;&#25152;&#26377;&#23376;&#34920;&#36798;&#24335;&#21305;&#37197;<br />
<span class="t-mark">(&#31867;&#27169;&#26495;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-regex-regex_search.html"><span class="t-lines"><span>regex_search</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>&#23581;&#35797;&#21305;&#37197;&#19968;&#20010;&#27491;&#21017;&#34920;&#36798;&#24335;&#21040;&#23383;&#31526;&#24207;&#21015;&#30340;&#20219;&#20309;&#37096;&#20998;<br />
<span class="t-mark">(&#20989;&#25968;&#27169;&#26495;)</span></td>
</tr>
</table>
</div>
<div class="visualClear"></div>
</div>
</div>
</div>
</body>
</html>
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