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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>pointer_to_unary_function</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-functional.html">functional</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><br /></span>
<p>&nbsp; &nbsp; <span class="kw1">class</span> Arg,<br />
&nbsp; &nbsp; <span class="kw1">class</span> Result<br /></p>
<span class="sy1">&gt;</span> <span class="kw1">class</span> pointer_to_unary_function <span class="sy4">:</span> <span class="kw1">public</span> <a href="cpp-utility-functional-unary_function.html"><span class="kw1125">std::<span class="me2">unary_function</span></span></a><span class="sy1">&lt;</span>Arg, Result<span class="sy1">&gt;</span><span class="sy4">;</span></div>
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<td><span class="t-mark">(C++11 &#20013;&#24323;&#29992;)</span><br />
<span class="t-mark-rev t-until-cxx17">(C++17 &#20013;&#31227;&#38500;)</span></td>
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<p><code>std::pointer_to_unary_function</code> &#26159;&#34920;&#29616;&#20026;&#29615;&#32469;&#19968;&#20803;&#20989;&#25968;&#30340;&#21253;&#35013;&#22120;&#30340;&#20989;&#25968;&#23545;&#35937;&#12290;</p>
<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E5.87.BD.E6.95.B0">&#25104;&#21592;&#20989;&#25968;</span></h3>
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<div><span class="t-lines"><span>(&#26500;&#36896;&#20989;&#25968;)</span></span></div>
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<td>&#20197;&#25552;&#20379;&#30340;&#20989;&#25968;&#26500;&#36896; <code>pointer_to_unary_function</code> &#23545;&#35937;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><span class="t-lines"><span>operator()</span></span></div>
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<td>&#35843;&#29992;&#23384;&#20648;&#30340;&#20989;&#25968;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<h2><span class="mw-headline" id="std::pointer_to_unary_function::pointer_to_unary_function"><span style="font-size:0.7em; line-height:130%">std::pointer_to_unary_function::</span>pointer_to_unary_function</span></h2>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">explicit</span> pointer_to_unary_function<span class="br0">(</span> Result <span class="br0">(</span><span class="sy2">*</span>f<span class="br0">)</span><span class="br0">(</span>Arg<span class="br0">)</span> <span class="br0">)</span><span class="sy4">;</span></span></div>
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<p>&#26500;&#36896; <code>pointer_to_unary_function</code> &#20989;&#25968;&#23545;&#35937;&#65292;&#23384;&#20648;&#20989;&#25968; <code>f</code> &#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;&#23384;&#20648;&#30340;&#25351;&#21521;&#20989;&#25968;&#25351;&#38024;</td>
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<h2><span class="mw-headline" id="std::pointer_to_unary_function::operator.28.29"><span style="font-size:0.7em; line-height:130%">std::pointer_to_unary_function::</span>operator()</span></h2>
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<div><span class="mw-geshi cpp source-cpp">Result operator<span class="br0">(</span><span class="br0">)</span><span class="br0">(</span> Arg x <span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span></span></div>
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<p>&#35843;&#29992;&#23384;&#20648;&#30340;&#20989;&#25968;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0_2">&#21442;&#25968;</span></h3>
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<td>x</td>
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<td>&#20256;&#36882;&#32473;&#20989;&#25968;&#30340;&#21442;&#25968;</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>
<p>&#34987;&#35843;&#29992;&#20989;&#25968;&#30340;&#36820;&#22238;&#20540;&#12290;</p>
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<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-pointer_to_binary_function.html"><span class="t-lines"><span>pointer_to_binary_function</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-deprecated-cxx11">(C++11 &#20013;&#24323;&#29992;)</span></span><span><span class="t-mark-rev t-until-cxx17">(C++17 &#20013;&#31227;&#38500;)</span></span></span></div>
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<td>&#36866;&#37197;&#22120;&#20860;&#23481;&#30340;&#21253;&#35013;&#65292;&#29992;&#20110;&#21253;&#35013;&#20108;&#20803;&#20989;&#25968;&#30340;&#25351;&#38024;<br />
<span class="t-mark">(&#31867;&#27169;&#26495;)</span></td>
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<div><a href="cpp-utility-functional-ptr_fun.html"><span class="t-lines"><span>ptr_fun</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-deprecated-cxx11">(C++11 &#20013;&#24323;&#29992;)</span><span class="t-mark-rev t-until-cxx17">(C++17 &#20013;&#31227;&#38500;)</span></span></span></div>
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<td>&#20174;&#20989;&#25968;&#25351;&#38024;&#21019;&#24314;&#19982;&#36866;&#37197;&#22120;&#20860;&#23481;&#30340;&#20989;&#25968;&#23545;&#35937;&#21253;&#35013;&#22120;<br />
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