63 lines
3.4 KiB
HTML
63 lines
3.4 KiB
HTML
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<title>std::shared_ptr<T>::~shared_ptr</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_memory_shared_ptr_shared_ptr 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::shared_ptr<T>::</span>~shared_ptr</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-shared_ptr.html">shared ptr</a></span></div>
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<div><span class="mw-geshi cpp source-cpp">~shared_ptr<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span></span></div>
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<p>若 <code>*this</code> 占有对象且它是最后一个占有该对象的 <code>shared_ptr</code> ，则通过占有的删除器销毁对象。</p>
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<p>析构后，与 <code>*this</code> 共享所有权的智能指针若存在，则报告比先前值少一的 <span class="t-lc"><a href="cpp-memory-shared_ptr-use_count.html">use_count()</a></span> 。</p>
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<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">注解</span></h3>
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<p>不同于 <span class="t-lc"><a href="cpp-memory-unique_ptr.html">std::unique_ptr</a></span> ，即使被管理指针为空也调用 <span class="t-lc"><a href="cpp-memory-shared_ptr.html">std::shared_ptr</a></span> 的删除器。</p>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
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<td class="mbox-text" style="">本节未完成<br />
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原因：暂无示例</td>
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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-weak_ptr-~weak_ptr.html"><span class="t-lines"><span>(析构函数)</span></span></a></div>
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<td>销毁 <code>weak_ptr</code><br />
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<span class="t-mark">(<code>std::weak_ptr<T></code> 的公开成员函数)</span></td>
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