klarkxy/hustoj
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
Files
master
hustoj/web/cppreference-zh/chmhelp/cpp-regex-regex_search.html
klarkxy 196e706fe4 上传cppreference
2025-08-01 12:57:54 +08:00

402 lines
38 KiB
HTML
Raw Permalink Blame History

<!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::regex_search</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_regex_regex_search 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::</span>regex_search</h1>
<div id="bodyContent">
<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-regex.html">regex</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-dsc-header">
<td>
<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-regex.html">&lt;regex&gt;</a></code></div>
</td>
<td></td>
<td></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> 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_search<span class="br0">(</span> BidirIt first, BidirIt last,<br />
&nbsp; &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; &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; &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; &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>(1)</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> 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_search<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; &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; &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; &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; &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>
</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_search<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; &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; &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; &nbsp;Alloc<br />
&nbsp; &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; &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; &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; &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>
</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> 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_search<span class="br0">(</span> BidirIt first, BidirIt last,<br />
&nbsp; &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; &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; &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>(4)</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> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> regex_search<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; &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; &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; &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>
</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> CharT, <span class="kw1">class</span> Traits <span class="sy1">&gt;</span><br />
<span class="kw4">bool</span> regex_search<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; &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; &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; &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_search<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; &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; &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; &nbsp;Alloc<br />
&nbsp; &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; &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; &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; &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>
</tr>
<tr class="t-dcl-sep">
<td></td>
<td></td>
<td></td>
</tr>
</tbody>
</table>
<p>&#30830;&#23450;&#27491;&#21017;&#34920;&#36798;&#24335; <code>e</code> &#21644;&#30446;&#26631;&#23383;&#31526;&#24207;&#21015;&#20013;&#30340;&#26576;&#20010;&#23376;&#24207;&#21015;&#38388;&#26159;&#21542;&#26377;&#21305;&#37197;&#12290;</p>
<div class="t-li1"><span class="t-li">1)</span> &#20998;&#26512;&#27867;&#22411;&#33539;&#22260; <code>[first,last)</code> &#12290;&#36820;&#22238;&#21305;&#37197;&#32467;&#26524;&#20110; <code>m</code> &#12290;</div>
<div class="t-li1"><span class="t-li">2)</span> &#20998;&#26512; <code>str</code> &#25152;&#25351;&#21521;&#30340;&#31354;&#32456;&#27490;&#23383;&#31526;&#20018;&#12290;&#36820;&#22238;&#21305;&#37197;&#32467;&#26524;&#20110; <code>m</code> &#12290;</div>
<div class="t-li1"><span class="t-li">3)</span> &#20998;&#26512; string <code>s</code> &#12290;&#36820;&#22238;&#21305;&#37197;&#32467;&#26524;&#20110; <code>m</code> &#12290;</div>
<div class="t-li1"><span class="t-li">4-6)</span> &#31561;&#20215;&#20110; <span class="t-v">(1-3)</span> &#65292;&#21482;&#26159;&#30465;&#30053;&#21305;&#37197;&#32467;&#26524;&#12290;</div>
<div class="t-li1"><span class="t-li">7)</span> &#31105;&#27490;&#37325;&#36733; <span class="t-v">(3)</span> &#25509;&#21463;&#20020;&#26102;&#23383;&#31526;&#20018;&#65292;&#21542;&#21017;&#27492;&#20989;&#25968;&#23558;&#20197;&#31435;&#21363;&#21464;&#20026;&#38750;&#27861;&#30340; string &#36845;&#20195;&#22120;&#22635;&#20805; <code>match_results</code> <code>m</code> &#12290;</div>
<p><code>regex_search</code> &#23558;&#25104;&#21151;&#22320;&#21305;&#37197;&#32473;&#23450;&#24207;&#21015;&#30340;&#20219;&#20309;&#23376;&#24207;&#21015;&#65292;&#30456;&#23545;&#22320; <span class="t-lc"><a href="cpp-regex-regex_match.html">std::regex_match</a></span> &#20165;&#33509;&#27491;&#21017;&#34920;&#36798;&#24335;&#21305;&#37197;<i>&#25972;&#20010;</i>&#24207;&#21015;&#25165;&#36820;&#22238; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw2">true</span></span></span> &#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>&#26631;&#35782;&#30446;&#26631;&#23383;&#31526;&#24207;&#21015;&#30340;&#33539;&#22260;</td>
</tr>
<tr class="t-par">
<td>str</td>
<td>-</td>
<td>&#25351;&#21521;&#31354;&#32456;&#27490;&#23383;&#31526;&#24207;&#21015;&#30340;&#25351;&#38024;</td>
</tr>
<tr class="t-par">
<td>s</td>
<td>-</td>
<td>&#26631;&#35782;&#30446;&#26631;&#23383;&#31526;&#24207;&#21015;&#30340;&#25351;&#38024;</td>
</tr>
<tr class="t-par">
<td>e</td>
<td>-</td>
<td>&#24212;&#24403;&#24212;&#29992;&#21040;&#30446;&#26631;&#23383;&#31526;&#24207;&#21015;&#30340; <span class="t-lc"><a href="cpp-regex-basic_regex.html">std::regex</a></span></td>
</tr>
<tr class="t-par">
<td>m</td>
<td>-</td>
<td>&#21305;&#37197;&#32467;&#26524;</td>
</tr>
<tr class="t-par">
<td>flags</td>
<td>-</td>
<td>&#25484;&#31649;&#25628;&#32034;&#34892;&#20026;&#30340; <span class="t-lc"><a href="cpp-regex-match_flag_type.html">std::regex_constants::match_flag_type</a></span></td>
</tr>
<tr class="t-par-hitem">
<td colspan="3">&#31867;&#22411;&#35201;&#27714;</td>
</tr>
<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>
<tr class="t-par-req">
<td colspan="3">-
<div class="spacer"></div>
<code>Alloc</code> &#24517;&#39035;&#28385;&#36275;<a href="cpp-named_req-Allocator.html"><span style="font-style:italic">&#20998;&#37197;&#22120;</span> <span style="font-family: Georgia, &#39;DejaVu Serif&#39;, serif; font-style:italic">(Allocator)</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;&#26356;&#26032;&#23545;&#35937; <code>m</code> &#22914;&#19979;&#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>&#30340;&#25968;&#37327;&#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><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>
</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">m.<span class="me1">prefix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">first</span> <span class="sy3">!</span><span class="sy1">=</span> m.<span class="me1">prefix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">second</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">suffix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">first</span></span></span></td>
<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>
</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">m.<span class="me1">suffix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">first</span> <span class="sy3">!</span><span class="sy1">=</span> m.<span class="me1">suffix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">second</span></span></span></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>&#21305;&#37197;&#24207;&#21015;&#30340;&#36215;&#22987;</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>&#21305;&#37197;&#25968;&#21015;&#30340;&#32467;&#23614;</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></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;&#30340;&#36215;&#22987;&#65292;&#25110;&#33509;&#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;&#30340;&#32467;&#23614;&#65292;&#25110;&#33509;&#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;&#23376;&#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>&#20026;&#22312;&#30446;&#26631;&#24207;&#21015;&#20869;&#26816;&#39564;&#25152;&#26377;&#21305;&#37197;&#65292;&#21487;&#22312;&#24490;&#29615;&#20013;&#35843;&#29992; <code>std::regex_search</code> &#65292;&#27599;&#27425;&#20174;&#20808;&#21069;&#35843;&#29992;&#30340; <code>m[0].second</code> &#37325;&#26032;&#24320;&#22987;&#12290; <span class="t-lc"><a href="cpp-regex-regex_iterator.html">std::regex_iterator</a></span> &#25552;&#20379;&#23545;&#27492;&#36845;&#20195;&#30340;&#31616;&#26131;&#25509;&#21475;&#12290;</p>
<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>
<a href="cpp-string-basic_string.html"><span class="kw1230">std::<span class="me2">string</span></span></a> lines<span class="br0">[</span><span class="br0">]</span> <span class="sy1">=</span> <span class="br0">{</span><span class="st0">&quot;Roses are #ff0000&quot;</span>,
<span class="st0">&quot;violets are #0000ff&quot;</span>,
<span class="st0">&quot;all of my base are belong to you&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> color_regex<span class="br0">(</span><span class="st0">&quot;#([a-f0-9]{2})&quot;</span>
<span class="st0">&quot;([a-f0-9]{2})&quot;</span>
<span class="st0">&quot;([a-f0-9]{2})&quot;</span><span class="br0">)</span><span class="sy4">;</span>
<span class="co1">// &#31616;&#21333;&#21305;&#37197;</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>line <span class="sy4">:</span> lines<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> line <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;: &quot;</span> <span class="sy1">&lt;&lt;</span> <a href="cpp-io-manip-boolalpha.html"><span class="kw1764">std::<span class="me2">boolalpha</span></span></a>
<span class="sy1">&lt;&lt;</span> std<span class="sy4">::</span><span class="me2">regex_search</span><span class="br0">(</span>line, color_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>
<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">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="co1">// &#23637;&#31034;&#27599;&#20010;&#21305;&#37197;&#20013;&#26377;&#26631;&#35760;&#23376;&#34920;&#36798;&#24335;&#30340;&#20869;&#23481;</span>
<a href="cpp-regex-match_results.html"><span class="kw2010">std::<span class="me2">smatch</span></span></a> color_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> line <span class="sy4">:</span> lines<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_search</span><span class="br0">(</span>line, color_match, color_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> <span class="st0">&quot;matches for &#39;&quot;</span> <span class="sy1">&lt;&lt;</span> line <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;&#39;<span class="es1">\n</span>&quot;</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;Prefix: &#39;&quot;</span> <span class="sy1">&lt;&lt;</span> color_match.<span class="me1">prefix</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;&#39;<span class="es1">\n</span>&quot;</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> color_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>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <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> color_match<span class="br0">[</span>i<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>
<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;Suffix: &#39;&quot;</span> <span class="sy1">&lt;&lt;</span> color_match.<span class="me1">suffix</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;<span class="es1">\&#39;</span><span class="es1">\n</span><span class="es1">\n</span>&quot;</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="br0">}</span>
<span class="co1">// &#37325;&#22797;&#25628;&#32034;&#65288;&#21442;&#38405; std::regex_iterator &#65289;</span>
<a href="cpp-string-basic_string.html"><span class="kw1230">std::<span class="me2">string</span></span></a> log<span class="br0">(</span>R<span class="st0">&quot;(
Speed: 366
Mass: 35
Speed: 378
Mass: 32
Speed: 400
Mass: 30)&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> r<span class="br0">(</span>R<span class="st0">&quot;(Speed:<span class="es1">\t</span>\d*)&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> sm<span class="sy4">;</span>
<span class="kw1">while</span><span class="br0">(</span>regex_search<span class="br0">(</span>log, sm, r<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> sm.<span class="me1">str</span><span class="br0">(</span><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>
log <span class="sy1">=</span> sm.<span class="me1">suffix</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="co1">// C &#39118;&#26684;&#23383;&#31526;&#20018;&#28436;&#31034;</span>
<a href="cpp-regex-match_results.html"><span class="kw2008">std::<span class="me2">cmatch</span></span></a> cm<span class="sy4">;</span>
<span class="kw1">if</span><span class="br0">(</span>std<span class="sy4">::</span><span class="me2">regex_search</span><span class="br0">(</span><span class="st0">&quot;this is a test&quot;</span>, cm, <a href="cpp-regex-basic_regex.html"><span class="kw2000">std::<span class="me2">regex</span></span></a><span class="br0">(</span><span class="st0">&quot;test&quot;</span><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> <span class="st0">&quot;<span class="es1">\n</span>Found &quot;</span> <span class="sy1">&lt;&lt;</span> cm<span class="br0">[</span><span class="nu0">0</span><span class="br0">]</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot; at position &quot;</span> <span class="sy1">&lt;&lt;</span> cm.<span class="me1">prefix</span><span class="br0">(</span><span class="br0">)</span>.<span class="me1">length</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</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">Roses are #ff0000: true
violets are #0000ff: true
all of my base are belong to you: false
matches for &#39;Roses are #ff0000&#39;
Prefix: &#39;Roses are &#39;
0: #ff0000
1: ff
2: 00
3: 00
Suffix: &#39;&#39;
matches for &#39;violets are #0000ff&#39;
Prefix: &#39;violets are &#39;
0: #0000ff
1: 00
2: 00
3: ff
Suffix: &#39;&#39;
Speed: 366
Speed: 378
Speed: 400
Found test at position 10</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_match.html"><span class="t-lines"><span>regex_match</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;&#25972;&#20010;&#23383;&#31526;&#24207;&#21015;<br />
<span class="t-mark">(&#20989;&#25968;&#27169;&#26495;)</span></td>
</tr>
</table>
</div>
<div class="visualClear"></div>
</div>
</div>
</div>
</body>
</html>
Reference in New Issue View Git Blame Copy Permalink