83 lines
4.8 KiB
HTML
83 lines
4.8 KiB
HTML
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<title>std::scoped_allocator_adaptor<OuterAlloc,InnerAlloc...>::destroy</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_memory_scoped_allocator_adaptor_destroy skin-cppreference2 action-view cpp-navbar">
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::scoped_allocator_adaptor<OuterAlloc,InnerAlloc...>::</span>destroy</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-memory.html">memory</a>‎ | <a href="cpp-memory-scoped_allocator_adaptor.html">scoped allocator adaptor</a></span></div>
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<div>定义于头文件 <code><a href="cpp-header-scoped_allocator.html"><scoped_allocator></a></code></div>
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<td></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> T <span class="sy1">></span><br />
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<span class="kw4">void</span> destroy<span class="br0">(</span> T<span class="sy2">*</span> p <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span></td>
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<td></td>
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<p>用外层分配器调用 <code>p</code> 所指向对象的析构函数，通过调用</p>
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<p><span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-memory-allocator_traits.html"><span class="kw701">std::<span class="me2">allocator_traits</span></span></a><span class="sy1"><</span>OUTERMOST<span class="sy1">></span><span class="sy4">::</span><span class="me2">destroy</span><span class="br0">(</span>OUTERMOST<span class="br0">(</span><span class="sy2">*</span>this<span class="br0">)</span>, p<span class="br0">)</span></span></span></p>
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<p>其中 OUTERMOST 是调用 <span class="t-c"><span class="mw-geshi cpp source-cpp">this<span class="sy2">-</span><span class="sy1">></span>outer_allocator<span class="br0">(</span><span class="br0">)</span></span></span> ，之后在此调用的结果上递归调用 <code>outer_allocator()</code> 成员函数直至抵达无该成员函数的类型的返回类型。</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<table class="t-par-begin">
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<tr class="t-par">
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<td>p</td>
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<td>-</td>
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<td>指向将被销毁的对象的指针</td>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
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<p>（无）</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
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<div><a href="cpp-memory-allocator_traits-destroy.html"><span class="t-lines"><span>destroy</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-cmark">[静态]</span></span></span></div>
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</div>
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</td>
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<td>析构存储于已分配存储的对象<br />
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<span class="t-mark">(函数模板)</span></td>
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<div><a href="cpp-memory-allocator-destroy.html"><span class="t-lines"><span>destroy</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-deprecated-cxx17">(C++17 中弃用)</span></span><span><span class="t-mark-rev t-until-cxx20">(C++20 中移除)</span></span></span></div>
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</td>
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<td>析构在已分配存储中的对象<br />
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<span class="t-mark">(<code>std::allocator<T></code> 的公开成员函数)</span></td>
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