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<title>operator==,!=,&lt;,&lt;=,&gt;,&gt;=,&lt;=&gt;(std::sub_match)</title>
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<h1 id="firstHeading" class="firstHeading">operator==,!=,&lt;,&lt;=,&gt;,&gt;=,&lt;=&gt;<small>(std::sub_match)</small></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>&lrm; | <a href="cpp-regex-sub_match.html">sub match</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>&#30452;&#25509;&#27604;&#36739;</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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> lhs,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rhs <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 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy3">!</span><span class="sy1">=</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> lhs,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rhs <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><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> lhs,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rhs <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><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;=</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> lhs,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rhs <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><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> lhs,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rhs <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><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;=</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> lhs,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rhs <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><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="coMULTI">/*comp-cat*/</span> operator<span class="sy1">&lt;=&gt;</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> lhs,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rhs <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(7)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
</tr>
<tr class="t-dcl-sep">
<td></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl-h">
<td>
<div><code>std::sub_match</code> &#19982; <code>std::basic_string</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, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Alloc <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<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><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span>,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Traits,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rhs <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(8)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Alloc <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy3">!</span><span class="sy1">=</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<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><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span>,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Traits,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> st <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(9)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Alloc <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <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><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span>,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Traits,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> st <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(10)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Alloc <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;=</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<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><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span>,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Traits,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> st <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(11)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Alloc <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <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><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span>,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Traits,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> st <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(12)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Alloc <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;=</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<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><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span>,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Traits,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> st <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(13)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx20">
<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, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Alloc <span class="sy1">&gt;</span><br /></span>
<p><span class="coMULTI">/*comp-cat*/</span> operator<span class="sy1">&lt;=&gt;</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <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><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span>,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Traits,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> st <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(14)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
</tr>
<tr class="t-dcl-sep">
<td></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl-h">
<td>
<div><code>std::basic_string</code> &#19982; <code>std::sub_match</code></div>
</td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Alloc <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">==</span><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><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span>,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Traits,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> st,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(15)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Alloc <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy3">!</span><span class="sy1">=</span><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><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span>,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Traits,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> st,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(16)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Alloc <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;</span><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><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span>,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Traits,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> st,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(17)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Alloc <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;=</span><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><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span>,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Traits,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> st,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(18)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Alloc <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;</span><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><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span>,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; Traits,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> st,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(19)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Alloc <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;=</span><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><br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span>,<br />
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;Traits,Alloc<span class="sy1">&gt;</span><span class="sy3">&amp;</span> st,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(20)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl-sep">
<td></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl-h">
<td>
<div><code>std::sub_match</code> &#19982; <code>std::iterator_traits&lt;BidirIt&gt;::value_type*</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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy2">*</span> s <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(21)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy3">!</span><span class="sy1">=</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy2">*</span> s <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(22)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy2">*</span> s <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(23)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;=</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy2">*</span> s <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(24)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy2">*</span> s <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(25)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;=</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy2">*</span> s <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(26)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="coMULTI">/*comp-cat*/</span> operator<span class="sy1">&lt;=&gt;</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy2">*</span> s <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(27)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
</tr>
<tr class="t-dcl-sep">
<td></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl-h">
<td>
<div><code>std::iterator_traits&lt;BidirIt&gt;::value_type*</code> &#19982; <code>std::sub_match</code></div>
</td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span> <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy2">*</span> s,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(28)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy3">!</span><span class="sy1">=</span><span class="br0">(</span> <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy2">*</span> s,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(29)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;</span><span class="br0">(</span> <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy2">*</span> s,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(30)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;=</span><span class="br0">(</span> <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy2">*</span> s,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(31)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;</span><span class="br0">(</span> <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy2">*</span> s,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(32)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;=</span><span class="br0">(</span> <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy2">*</span> s,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(33)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl-sep">
<td></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl-h">
<td>
<div><code>std::sub_match</code> &#19982; <code>std::iterator_traits&lt;BidirIt&gt;::value_type</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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy3">&amp;</span> ch <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(34)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy3">!</span><span class="sy1">=</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy3">&amp;</span> ch <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(35)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy3">&amp;</span> ch <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(36)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;=</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy3">&amp;</span> ch <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(37)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy3">&amp;</span> ch <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(38)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;=</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy3">&amp;</span> ch <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(39)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="coMULTI">/*comp-cat*/</span> operator<span class="sy1">&lt;=&gt;</span><span class="br0">(</span> <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy3">&amp;</span> ch <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(40)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
</tr>
<tr class="t-dcl-sep">
<td></td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl-h">
<td>
<div><code>std::iterator_traits&lt;BidirIt&gt;::value_type</code> &#19982; <code>std::sub_match</code></div>
</td>
<td></td>
<td></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span> <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy3">&amp;</span> ch,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(41)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy3">!</span><span class="sy1">=</span><span class="br0">(</span> <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy3">&amp;</span> ch,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(42)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;</span><span class="br0">(</span> <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy3">&amp;</span> ch,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(43)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&lt;=</span><span class="br0">(</span> <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy3">&amp;</span> ch,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(44)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;</span><span class="br0">(</span> <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy3">&amp;</span> ch,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(45)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl t-since-cxx11 t-until-cxx20">
<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 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">&gt;=</span><span class="br0">(</span> <span class="kw4">const</span> <span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy3">&amp;</span> ch,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy3">&amp;</span> sm <span class="br0">)</span><span class="sy4">;</span></div>
</td>
<td>(46)</td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span><br />
<span class="t-mark-rev t-until-cxx20">(C++20 &#21069;)</span></td>
</tr>
<tr class="t-dcl-sep">
<td></td>
<td></td>
<td></td>
</tr>
</tbody>
</table>
<p>&#27604;&#36739; <code>sub_match</code> &#19982;&#21478;&#19968; <code>sub_match</code> &#12289; string &#12289;&#31354;&#32456;&#27490;&#23383;&#31526;&#24207;&#21015;&#25110;&#23383;&#31526;&#12290;</p>
<div class="t-li1"><span class="t-li">1-7)</span> &#36890;&#36807;&#30452;&#25509;&#27604;&#36739;&#20854;&#24213;&#23618;&#24207;&#21015;&#27604;&#36739;&#20108;&#20010; <span class="t-c"><span class="mw-geshi cpp source-cpp">sub_match</span></span> &#12290;&#22914;&#21516;&#20197; <span class="t-c"><span class="mw-geshi cpp source-cpp">lhs.<span class="me1">compare</span><span class="br0">(</span>rhs<span class="br0">)</span></span></span> &#23454;&#29616;&#12290;</div>
<div class="t-li1"><span class="t-li">8-20)</span> &#27604;&#36739; <span class="t-c"><span class="mw-geshi cpp source-cpp">sub_match</span></span> &#19982; <span class="t-lc"><a href="cpp-string-basic_string.html">std::basic_string</a></span> &#12290;&#22914;&#21516;&#20197; <span class="t-c"><span class="mw-geshi cpp source-cpp">sm.<span class="me1">compare</span><span class="br0">(</span><span class="kw1">typename</span> sub_match<span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">string_type</span><span class="br0">(</span>st.<span class="me1">data</span><span class="br0">(</span><span class="br0">)</span>, st.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span></span></span> &#23454;&#29616;&#12290;</div>
<div class="t-li1"><span class="t-li">21-33)</span> &#27604;&#36739; <span class="t-c"><span class="mw-geshi cpp source-cpp">sub_match</span></span> &#19982;&#31354;&#32456;&#27490;&#23383;&#31526;&#20018;&#12290;&#22914;&#21516;&#20197; <span class="t-c"><span class="mw-geshi cpp source-cpp">sm.<span class="me1">compare</span><span class="br0">(</span>s<span class="br0">)</span></span></span> &#23454;&#29616;&#12290;</div>
<div class="t-li1"><span class="t-li">34-46)</span> &#27604;&#36739; <span class="t-c"><span class="mw-geshi cpp source-cpp">sub_match</span></span> &#19982;&#23383;&#31526;&#12290;&#22914;&#21516;&#20197; <span class="t-c"><span class="mw-geshi cpp source-cpp">sm.<span class="me1">compare</span><span class="br0">(</span><span class="kw1">typename</span> sub_match<span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">string_type</span><span class="br0">(</span><span class="nu0">1</span>, ch<span class="br0">)</span><span class="br0">)</span></span></span> &#23454;&#29616;&#12290;</div>
<table class="t-rev-begin">
<tr class="t-rev t-since-cxx20">
<td>
<p>&#19977;&#36335;&#27604;&#36739;&#36816;&#31639;&#31526;&#30340;&#32467;&#26524;&#31867;&#22411;&#65288; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="coMULTI">/*comp-cat*/</span></span></span> &#65289;&#26159; <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">compare_three_way_result_t</span><span class="sy1">&lt;</span><span class="kw1">typename</span> <a href="cpp-regex-sub_match.html"><span class="kw2002">std::<span class="me2">sub_match</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">string_type</span><span class="sy1">&gt;&gt;</span></span></span> &#65292;&#21363; <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-string-char_traits.html"><span class="kw1267">std::<span class="me2">char_traits</span></span></a><span class="sy1">&lt;</span><span class="kw1">typename</span> <a href="cpp-iterator-iterator_traits.html"><span class="kw651">std::<span class="me2">iterator_traits</span></span></a><span class="sy1">&lt;</span>BidirIt<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value_type</span><span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">comparison_category</span></span></span> &#65292;&#33509;&#35813;&#26377;&#38480;&#23450;&#26631;&#35782;&#21512;&#27861;&#24182;&#25351;&#20195;&#31867;&#22411;&#65292;&#21542;&#21017;&#20026; <span class="t-lc">std::weak_ordering</span> &#12290;&#33509; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="coMULTI">/*comp-cat*/</span></span></span> &#19981;&#26159;&#27604;&#36739;&#31867;&#21035;&#31867;&#22411;&#65292;&#21017;&#31243;&#24207;&#20026;&#38750;&#33391;&#26500;&#12290;</p>
<p><code>&lt;</code>&#12289; <code>&lt;=</code>&#12289; <code>&gt;</code>&#12289; <code>&gt;=</code> &#21450; <code>!=</code> &#36816;&#31639;&#31526;&#20998;&#21035;&#20174; <code>operator&lt;=&gt;</code> &#19982; <code>operator==</code> <a href="cpp-language-operators.html#.E5.85.B3.E7.B3.BB.E8.BF.90.E7.AE.97.E7.AC.A6">&#21512;&#25104;</a>&#12290;</p>
</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
</tr>
</table>
<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>lhs, rhs, sm</td>
<td>-</td>
<td>&#35201;&#27604;&#36739;&#30340; <code>sub_match</code></td>
</tr>
<tr class="t-par">
<td>st</td>
<td>-</td>
<td>&#35201;&#27604;&#36739;&#30340; <code>basic_string</code></td>
</tr>
<tr class="t-par">
<td>s</td>
<td>-</td>
<td>&#25351;&#21521;&#35201;&#27604;&#36739;&#31354;&#32456;&#27490;&#23383;&#31526;&#20018;&#30340;&#25351;&#38024;</td>
</tr>
<tr class="t-par">
<td>ch</td>
<td>-</td>
<td>&#35201;&#27604;&#36739;&#30340;&#23383;&#31526;</td>
</tr>
</table>
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p><span class="t-rev-inl t-since-cxx20"><span>&#23545;&#20110; <code>operator==</code> &#65292;</span> <span><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></span></span>&#33509;&#20197; <span class="t-lc"><a href="cpp-regex-sub_match-compare.html">std::sub_match::compare()</a></span> &#23450;&#20041;&#30340;&#23545;&#24212;&#20851;&#31995;&#25104;&#31435;&#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> &#12290;</p>
<table class="t-rev-begin">
<tr class="t-rev t-since-cxx20">
<td>
<p>&#23545;&#20110; <code>operator&lt;=&gt;</code> &#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">static_cast</span><span class="sy1">&lt;</span><span class="coMULTI">/*comp-cat*/</span><span class="sy1">&gt;</span><span class="br0">(</span><span class="coMULTI">/*comp-res*/</span> <span class="sy1">&lt;=&gt;</span> <span class="nu0">0</span><span class="br0">)</span></span></span> &#65292;&#20854;&#20013; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="coMULTI">/*comp-res*/</span></span></span> &#26159;&#19978;&#36848; <span class="t-lc"><a href="cpp-regex-sub_match-compare.html">std::sub_match::compare()</a></span> &#30340;&#32467;&#26524;&#12290;</p>
</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
</tr>
</table>
<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">&#27880;&#35299;</span></h3>
<table class="t-rev-begin">
<tr class="t-rev t-since-cxx20">
<td>
<p>&#33509; <code>BidirIt</code> &#30340;&#20540;&#31867;&#22411;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw4">char</span></span></span> &#12289; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw4">wchar_t</span></span></span> &#12289; <span class="t-c"><span class="mw-geshi cpp source-cpp">char8_t</span></span> &#12289; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw4">char16_t</span></span></span> &#25110; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw4">char32_t</span></span></span> &#65292;&#21017; <code>operator&lt;=&gt;</code> &#30340;&#36820;&#22238;&#31867;&#22411;&#20026; <span class="t-lc">std::strong_ordering</span> &#12290;</p>
</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
</tr>
</table>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
<table class="metadata plainlinks ambox mbox-small-left ambox-notice" style="">
<tr>
<td class="mbox-empty-cell"></td>
<td class="mbox-text" style="">&#26412;&#33410;&#26410;&#23436;&#25104;<br />
&#21407;&#22240;&#65306;&#26242;&#26080;&#31034;&#20363;</td>
</tr>
</table>
<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/issue3432">LWG 3432</a></td>
<td>C++20</td>
<td>&#26410;&#35201;&#27714; <code>operator&lt;=&gt;</code> &#30340;&#36820;&#22238;&#31867;&#22411;&#20026;&#27604;&#36739;&#31867;&#21035;&#31867;&#22411;</td>
<td>&#24050;&#35201;&#27714;</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-sub_match-compare.html"><span class="t-lines"><span>compare</span></span></a></div>
</div>
</td>
<td>&#33509;&#23384;&#22312;&#21017;&#27604;&#36739;&#21305;&#37197;&#30340;&#23376;&#24207;&#21015;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
</table>
</div>
<div class="visualClear"></div>
</div>
</div>
</div>
</body>
</html>
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