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<h1 id="firstHeading" class="firstHeading">operator==, operator&lt;=&gt;<small>(std::basic_stacktrace)</small></h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-utility.html">utility</a>&lrm; | <a href="cpp-utility-basic_stacktrace.html">basic stacktrace</a></span></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> Allocator2 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw1">friend</span> <span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span> <span class="kw4">const</span> basic_stacktrace<span class="sy3">&amp;</span> lhs,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; <span class="kw4">const</span> basic_stacktrace<span class="sy1">&lt;</span>Allocator2<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rhs <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></div>
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<td>(1)</td>
<td><span class="t-mark-rev t-since-cxx23">(C++23 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> Allocator2 <span class="sy1">&gt;</span><br /></span>
<p><span class="kw1">friend</span> std<span class="sy4">::</span><span class="me2">strong_ordering</span><br />
&nbsp; &nbsp; operator<span class="sy1">&lt;=&gt;</span><span class="br0">(</span> <span class="kw4">const</span> basic_stacktrace<span class="sy3">&amp;</span> lhs,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> basic_stacktrace<span class="sy1">&lt;</span>Allocator2<span class="sy1">&gt;</span><span class="sy3">&amp;</span> rhs <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></div>
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<td>(2)</td>
<td><span class="t-mark-rev t-since-cxx23">(C++23 &#36215;)</span></td>
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<div class="t-li1"><span class="t-li">1)</span> &#26816;&#26597; <code>lhs</code> &#19982; <code>rhs</code> &#30340;&#20869;&#23481;&#26159;&#21542;&#30456;&#31561;&#65292;&#21363;&#23427;&#20204;&#25317;&#26377;&#30456;&#21516;&#20803;&#32032;&#25968;&#19988; <code>lhs</code> &#20013;&#30340;&#20803;&#32032;&#27604;&#36739;&#31561;&#20110; <code>rhs</code> &#20013;&#30456;&#21516;&#20301;&#32622;&#30340;&#20803;&#32032;&#12290;</div>
<div class="t-li1"><span class="t-li"></span> &#31561;&#20215;&#20110; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">return</span> <a href="cpp-algorithm-equal.html"><span class="kw1573">std::<span class="me2">equal</span></span></a><span class="br0">(</span>lhs.<span class="me1">begin</span><span class="br0">(</span><span class="br0">)</span>, lhs.<span class="me1">end</span><span class="br0">(</span><span class="br0">)</span>, rhs.<span class="me1">begin</span><span class="br0">(</span><span class="br0">)</span>, rhs.<span class="me1">end</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span></span></span> &#12290;</div>
<div class="t-li1"><span class="t-li">2)</span> &#36820;&#22238; <code>lhs</code> &#19982; <code>rhs</code> &#20013;&#30340;&#26632;&#36394;&#26465;&#30446;&#25968;&#30340;&#30456;&#23545;&#39034;&#24207;&#65292;&#33509;&#23427;&#20204;&#19981;&#30456;&#31561;&#12290;&#21542;&#21017;&#65288;&#33509; <code>lhs</code> &#19982; <code>rhs</code> &#30340;&#20803;&#32032;&#25968;&#30456;&#31561;&#65289;&#65292;&#21017;&#36820;&#22238; <code>lhs</code> &#19982; <code>rhs</code> &#30340;&#20803;&#32032;&#30340;&#23383;&#20856;&#24207;&#12290;</div>
<div class="t-li1"><span class="t-li"></span> &#31561;&#20215;&#20110;<br />
<span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">if</span> <span class="br0">(</span><span class="kw4">auto</span> cmp <span class="sy1">=</span> lhs.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;=&gt;</span> rhs.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span> cmp <span class="sy3">!</span><span class="sy1">=</span> <span class="nu0">0</span><span class="br0">)</span><br /></span></span>
<p>&nbsp; &nbsp; <span class="kw1">return</span> cmp<span class="sy4">;</span><br />
<span class="kw1">else</span><br />
&nbsp; &nbsp; <span class="kw1">return</span> std<span class="sy4">::</span><span class="me2">lexicographical_compare_three_way</span><span class="br0">(</span>lhs.<span class="me1">begin</span><span class="br0">(</span><span class="br0">)</span>, lhs.<span class="me1">end</span><span class="br0">(</span><span class="br0">)</span>,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; rhs.<span class="me1">begin</span><span class="br0">(</span><span class="br0">)</span>, rhs.<span class="me1">end</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span> &#12290;</div>
<p>&#36825;&#20123;&#20989;&#25968;&#27169;&#26495;&#23545;&#36890;&#24120;<a href="cpp-language-unqualified_lookup.html">&#26080;&#38480;&#23450;</a>&#25110;<a href="cpp-language-qualified_lookup.html">&#26377;&#38480;&#23450;&#26597;&#25214;</a>&#19981;&#21487;&#35265;&#65292;&#32780;&#21482;&#33021;&#22312; <code>std::basic_stacktrace&lt;Allocator&gt;</code> &#20026;&#21442;&#25968;&#30340;&#20851;&#32852;&#31867;&#26102;&#30001;<a href="cpp-language-adl.html">&#23454;&#21442;&#20381;&#36182;&#26597;&#25214;</a>&#25214;&#21040;&#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>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
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<td>lhs, rhs</td>
<td>-</td>
<td>&#35201;&#27604;&#36739;&#20869;&#23481;&#30340; <code>basic_stacktrace</code></td>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<div class="t-li1"><span class="t-li">1)</span> &#33509; <code>lhs</code> &#19982; <code>rhs</code> &#30340;&#20869;&#23481;&#30456;&#31561;&#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;</div>
<div class="t-li1"><span class="t-li">2)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">lhs.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;=&gt;</span> rhs.<span class="me1">size</span><span class="br0">(</span><span class="br0">)</span></span></span> &#65292;&#33509;&#32467;&#26524;&#19981;&#26159; <span class="t-lc">std::strong_order::equal</span> &#65292;&#21542;&#21017;&#20026; <code>lhs</code> &#19982; <code>rhs</code> &#30340;&#20803;&#32032;&#30340;&#23383;&#20856;&#24207;&#12290;</div>
<h3><span class="mw-headline" id=".E5.A4.8D.E6.9D.82.E5.BA.A6">&#22797;&#26434;&#24230;</span></h3>
<div class="t-li1"><span class="t-li">1-2)</span> &#33509; <code>lhs</code> &#19982; <code>rhs</code> &#22823;&#23567;&#19981;&#21516;&#21017;&#20026;&#24120;&#25968;&#65292;&#21542;&#21017;&#19982; <code>lhs</code> &#30340;&#22823;&#23567;&#25104;&#32447;&#24615;&#12290;</div>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
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