59 lines
3.2 KiB
HTML
59 lines
3.2 KiB
HTML
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<title>std::experimental::get_underlying</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_experimental_propagate_const_get_underlying 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::experimental::</span>get_underlying</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-experimental.html">experimental</a>‎ | <a href="cpp-experimental-propagate_const.html">propagate const</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> T <span class="sy1">></span><br />
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<span class="kw4">constexpr</span> T<span class="sy3">&</span> get_underlying<span class="br0">(</span>propagate_const<span class="sy1"><</span>T<span class="sy1">></span><span class="sy3">&</span> pt<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-libfund-ts-2 t-mark-ts">(库基础 TS v2)</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> T <span class="sy1">></span><br />
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<span class="kw4">constexpr</span> <span class="kw4">const</span> T<span class="sy3">&</span> get_underlying<span class="br0">(</span><span class="kw4">const</span> propagate_const<span class="sy1"><</span>T<span class="sy1">></span><span class="sy3">&</span> pt<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td class="t-dcl-nopad"></td>
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<td><span class="t-mark-rev t-since-libfund-ts-2 t-mark-ts">(库基础 TS v2)</span></td>
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<p>获得到存储于 <code>propagate_const</code> 中的仿指针对象的引用。</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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<table class="t-par-begin">
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<tr class="t-par">
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<td>pt</td>
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<td>-</td>
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<td><code>propagate_const</code> 对象</td>
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</table>
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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>到存储于 <code>pt</code> 中的仿指针对象的引用。</p>
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