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<h1 id="firstHeading" class="firstHeading">operator==,!=<small>(std::experimental::function)</small></h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-experimental.html">experimental</a>&lrm; | <a href="cpp-experimental-function.html">function</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> R, <span class="kw1">class</span>... <span class="me1">ArgTypes</span> <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> std<span class="sy4">::</span><span class="me2">experimental</span><span class="sy4">::</span><span class="me2">function</span><span class="sy1">&lt;</span>R<span class="br0">(</span>ArgTypes...<span class="br0">)</span><span class="sy1">&gt;</span><span class="sy3">&amp;</span> f,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<a href="cpp-types-nullptr_t.html"><span class="kw102">std::<span class="me2">nullptr_t</span></span></a> <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-libfund-ts t-mark-ts">(&#24211;&#22522;&#30784; TS)</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> R, <span class="kw1">class</span>... <span class="me1">ArgTypes</span> <span class="sy1">&gt;</span><br /></span>
<p><span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span> <a href="cpp-types-nullptr_t.html"><span class="kw102">std::<span class="me2">nullptr_t</span></span></a>,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> std<span class="sy4">::</span><span class="me2">experimental</span><span class="sy4">::</span><span class="me2">function</span><span class="sy1">&lt;</span>R<span class="br0">(</span>ArgTypes...<span class="br0">)</span><span class="sy1">&gt;</span><span class="sy3">&amp;</span> f <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-libfund-ts t-mark-ts">(&#24211;&#22522;&#30784; TS)</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> R, <span class="kw1">class</span>... <span class="me1">ArgTypes</span> <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> std<span class="sy4">::</span><span class="me2">experimental</span><span class="sy4">::</span><span class="me2">function</span><span class="sy1">&lt;</span>R<span class="br0">(</span>ArgTypes...<span class="br0">)</span><span class="sy1">&gt;</span><span class="sy3">&amp;</span> f,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<a href="cpp-types-nullptr_t.html"><span class="kw102">std::<span class="me2">nullptr_t</span></span></a> <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></div>
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<td>(3)</td>
<td><span class="t-mark-rev t-since-libfund-ts t-mark-ts">(&#24211;&#22522;&#30784; TS)</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> R, <span class="kw1">class</span>... <span class="me1">ArgTypes</span> <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> <a href="cpp-types-nullptr_t.html"><span class="kw102">std::<span class="me2">nullptr_t</span></span></a>,<br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;<span class="kw4">const</span> std<span class="sy4">::</span><span class="me2">experimental</span><span class="sy4">::</span><span class="me2">function</span><span class="sy1">&lt;</span>R<span class="br0">(</span>ArgTypes...<span class="br0">)</span><span class="sy1">&gt;</span><span class="sy3">&amp;</span> f <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></div>
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<td>(4)</td>
<td><span class="t-mark-rev t-since-libfund-ts t-mark-ts">(&#24211;&#22522;&#30784; TS)</span></td>
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<p>&#27604;&#36739; <code>std::experimental::function</code> &#21644;&#31354;&#25351;&#38024;&#12290;&#31354; function &#65288;&#21363;&#26080;&#21487;&#35843;&#29992;&#30446;&#26631;&#30340; function &#65289;&#19982;&#20043;&#27604;&#36739;&#30456;&#31561;&#65292;&#38750;&#31354; function &#27604;&#36739;&#19981;&#30456;&#31561;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
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<td>f</td>
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<td>&#35201;&#27604;&#36739;&#30340; <code>std::experimental::function</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">1-2)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy3">!</span>f</span></span></div>
<div class="t-li1"><span class="t-li">3-4)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="br0">(</span><span class="kw4">bool</span><span class="br0">)</span> f</span></span></div>
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
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<div><a href="cpp-utility-functional-function-operator_cmp.html"><span class="t-lines"><span>operator==</span><span>operator!=</span></span></a></div>
<div><span class="t-lines"><span></span><span><span class="t-mark-rev t-until-cxx20">(C++20 &#20013;&#31227;&#38500;)</span></span></span></div>
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<td>&#27604;&#36739; <span class="t-lc"><a href="cpp-utility-functional-function.html">std::function</a></span> &#21644; <span class="t-c"><span class="mw-geshi cpp source-cpp">nullptr</span></span><br />
<span class="t-mark">(&#20989;&#25968;&#27169;&#26495;)</span></td>
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