112 lines
9.4 KiB
HTML
112 lines
9.4 KiB
HTML
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<title>std::mem_fun_t, std::mem_fun1_t, std::const_mem_fun_t, std::const_mem_fun1_t</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>mem_fun_t, <span style="font-size:0.7em; line-height:130%">std::</span>mem_fun1_t, <span style="font-size:0.7em; line-height:130%">std::</span>const_mem_fun_t, <span style="font-size:0.7em; line-height:130%">std::</span>const_mem_fun1_t</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-utility.html">utility</a>‎ | <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"><</span> <span class="kw1">class</span> S, <span class="kw1">class</span> T <span class="sy1">></span><br /></span>
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<p><span class="kw1">class</span> mem_fun_t <span class="sy4">:</span> <span class="kw1">public</span> unary_function<span class="sy1"><</span>T<span class="sy2">*</span>,S<span class="sy1">></span> <span class="br0">{</span><br />
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<span class="kw1">public</span><span class="sy4">:</span><br />
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<span class="kw1">explicit</span> mem_fun_t<span class="br0">(</span>S <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span>p<span class="br0">)</span><span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span><br />
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S operator<span class="br0">(</span><span class="br0">)</span><span class="br0">(</span>T<span class="sy2">*</span> p<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span><br /></p>
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<span class="br0">}</span><span class="sy4">;</span></div>
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</td>
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<td>(1)</td>
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<td><span class="t-mark">(C++11 中弃用)</span><br />
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<span class="t-mark-rev t-until-cxx17">(C++17 中移除)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> S, <span class="kw1">class</span> T <span class="sy1">></span><br /></span>
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<p><span class="kw1">class</span> const_mem_fun_t <span class="sy4">:</span> <span class="kw1">public</span> unary_function<span class="sy1"><</span><span class="kw4">const</span> T<span class="sy2">*</span>,S<span class="sy1">></span> <span class="br0">{</span><br />
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<span class="kw1">public</span><span class="sy4">:</span><br />
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<span class="kw1">explicit</span> const_mem_fun_t<span class="br0">(</span>S <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span>p<span class="br0">)</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="br0">)</span><span class="sy4">;</span><br />
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S operator<span class="br0">(</span><span class="br0">)</span><span class="br0">(</span><span class="kw4">const</span> T<span class="sy2">*</span> p<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span><br /></p>
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<span class="br0">}</span><span class="sy4">;</span></div>
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</td>
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<td>(2)</td>
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<td><span class="t-mark">(C++11 中弃用)</span><br />
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<span class="t-mark-rev t-until-cxx17">(C++17 中移除)</span></td>
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</tr>
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<tr class="t-dcl t-until-cxx17">
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> S, <span class="kw1">class</span> T, <span class="kw1">class</span> Arg <span class="sy1">></span><br /></span>
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<p><span class="kw1">class</span> mem_fun1_t <span class="sy4">:</span> <span class="kw1">public</span> binary_function<span class="sy1"><</span>T<span class="sy2">*</span>,A,S<span class="sy1">></span> <span class="br0">{</span><br />
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<span class="kw1">public</span><span class="sy4">:</span><br />
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<span class="kw1">explicit</span> mem_fun1_t<span class="br0">(</span>S <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span>p<span class="br0">)</span><span class="br0">(</span>A<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span><br />
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S operator<span class="br0">(</span><span class="br0">)</span><span class="br0">(</span>T<span class="sy2">*</span> p, A x<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span><br /></p>
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<span class="br0">}</span><span class="sy4">;</span></div>
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</td>
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<td>(3)</td>
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<td><span class="t-mark">(C++11 中弃用)</span><br />
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<span class="t-mark-rev t-until-cxx17">(C++17 中移除)</span></td>
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</tr>
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<tr class="t-dcl t-until-cxx17">
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<td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> S, <span class="kw1">class</span> T, <span class="kw1">class</span> A <span class="sy1">></span><br /></span>
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<p><span class="kw1">class</span> const_mem_fun1_t <span class="sy4">:</span> <span class="kw1">public</span> binary_function<span class="sy1"><</span><span class="kw4">const</span> T<span class="sy2">*</span>,A,S<span class="sy1">></span> <span class="br0">{</span><br />
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<span class="kw1">public</span><span class="sy4">:</span><br />
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<span class="kw1">explicit</span> const_mem_fun1_t<span class="br0">(</span>S <span class="br0">(</span>T<span class="sy4">::</span><span class="sy2">*</span>p<span class="br0">)</span><span class="br0">(</span>A<span class="br0">)</span> <span class="kw4">const</span><span class="br0">)</span><span class="sy4">;</span><br />
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S operator<span class="br0">(</span><span class="br0">)</span><span class="br0">(</span><span class="kw4">const</span> T<span class="sy2">*</span> p, A x<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span><br /></p>
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<span class="br0">}</span><span class="sy4">;</span></div>
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</td>
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<td>(4)</td>
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<td><span class="t-mark">(C++11 中弃用)</span><br />
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<span class="t-mark-rev t-until-cxx17">(C++17 中移除)</span></td>
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</tr>
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<tr class="t-dcl-sep">
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<td></td>
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<td></td>
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<td></td>
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</tr>
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<p>围绕成员函数指针的包装器。将要调用其成员函数的类实例作为指针传递给 <code>operator()</code> 。</p>
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<div class="t-li1"><span class="t-li">1)</span> 包装无参数的非 const 成员函数。</div>
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<div class="t-li1"><span class="t-li">2)</span> 包装无参数的 const 成员函数。</div>
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<div class="t-li1"><span class="t-li">3)</span> 包装有单参数的非 const 成员函数。</div>
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<div class="t-li1"><span class="t-li">4)</span> 包装有单参数的 const 成员函数。</div>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
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<table class="t-dsc-begin">
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<div class="t-dsc-member-div">
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<div><a href="cpp-utility-functional-mem_fun.html"><span class="t-lines"><span>mem_fun</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-deprecated-cxx11">(C++11 中弃用)</span><span class="t-mark-rev t-until-cxx17">(C++17 中移除)</span></span></span></div>
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</div>
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</td>
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<td>从成员函数指针创建包装器，可以一个对象指针调用<br />
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<span class="t-mark">(函数模板)</span></td>
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</tr>
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<tr class="t-dsc">
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<td>
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<div class="t-dsc-member-div">
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<div><a href="cpp-utility-functional-mem_fun_ref_t.html"><span class="t-lines"><span>mem_fun_ref_t</span><span>mem_fun1_ref_t</span><span>const_mem_fun_ref_t</span><span>const_mem_fun1_ref_t</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-deprecated-cxx11">(C++11 中弃用)</span></span><span><span class="t-mark-rev t-until-cxx17">(C++17 中移除)</span></span></span></div>
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</div>
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</td>
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<td>指向零元或一元成员函数指针的包装器，可以一个对象引用调用<br />
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<span class="t-mark">(类模板)</span></td>
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</tr>
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</table>
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</div>
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<div class="visualClear"></div>
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</div>
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</div>
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</body>
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