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<title>std::get_unexpected</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>get_unexpected</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-error.html">error</a></span></div>
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<div>定义于头文件 <code><a href="cpp-header-exception.html"><exception></a></code></div>
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<div><span class="mw-geshi cpp source-cpp"><a href="cpp-error-unexpected_handler.html"><span class="kw789">std::<span class="me2">unexpected_handler</span></span></a> get_unexpected<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 起)</span><br />
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<span class="t-mark">(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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<p>返回当前安装的 <span class="t-lc"><a href="cpp-error-unexpected_handler.html">std::unexpected_handler</a></span> ,可以是空指针。</p>
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<p>此函数线程安全。先前到 <code>std::set_unexpected</code> 的调用<i>同步于</i>(见 <span class="t-lc"><a href="cpp-atomic-memory_order.html">std::memory_order</a></span> )此函数的后继调用。</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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<p>(无)</p>
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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>当前安装的 <span class="t-lc"><a href="cpp-error-unexpected_handler.html">std::unexpected_handler</a></span> 。</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-error-unexpected_handler.html"><span class="t-lines"><span>unexpected_handler</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(C++17 中移除)</span></span></span></div>
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<td><span class="t-lc"><a href="cpp-error-unexpected.html">std::unexpected</a></span> 所调用的函数类型<br />
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<span class="t-mark">(typedef)</span></td>
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<div><a href="cpp-error-set_unexpected.html"><span class="t-lines"><span>set_unexpected</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-until-cxx17">(C++17 中移除)</span></span></span></div>
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<td>更改要被 <span class="t-lc"><a href="cpp-error-unexpected.html">std::unexpected</a></span> 调用的函数<br />
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<span class="t-mark">(函数)</span></td>
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