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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">&#23454;&#39564;&#24615;&#24211;&#22836;&#25991;&#20214;</span> &lt;experimental/any&gt;</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-header.html">header</a>&lrm; | <a href="cpp-header-experimental.html">experimental</a></span></div>
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<p>&#27492;&#22836;&#25991;&#20214;&#26159;&#24211;&#22522;&#30784; TS (<a href="cpp-experimental-lib_extensions.html">v1</a>, <a href="cpp-experimental-lib_extensions_2.html">v2</a>) &#30340;&#19968;&#37096;&#20998;&#12290;</p>
<h3><span class="mw-headline" id=".E7.B1.BB">&#31867;</span></h3>
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<td>&#21517;&#23383;</td>
<td>&#25551;&#36848;</td>
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<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/bad_any_cast&amp;action=edit&amp;redlink=1" class="new" title="cpp/experimental/bad any cast&#65288;&#39029;&#38754;&#19981;&#23384;&#22312;&#65289;"><span class="t-lines"><span>bad_any_cast</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-libfund-ts t-mark-ts">(&#24211;&#22522;&#30784; TS)</span></span></span></div>
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<td>&#30001;&#22833;&#36133;&#30340; <code>any_cast</code> &#25152;&#25243;&#20986;&#30340;&#24322;&#24120;&#12290;<br />
<span class="t-mark">(&#31867;)</span></td>
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<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/any&amp;action=edit&amp;redlink=1" class="new" title="cpp/experimental/any&#65288;&#39029;&#38754;&#19981;&#23384;&#22312;&#65289;"><span class="t-lines"><span>any</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-libfund-ts t-mark-ts">(&#24211;&#22522;&#30784; TS)</span></span></span></div>
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<td>&#20445;&#26377;&#28385;&#36275; <code>ValueType</code> &#35201;&#27714;&#30340;&#20219;&#24847;&#31867;&#22411;&#30340;&#23454;&#20363;&#30340;&#23545;&#35937;&#12290;<br />
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<h3><span class="mw-headline" id=".E5.87.BD.E6.95.B0">&#20989;&#25968;</span></h3>
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<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/any/swap2&amp;action=edit&amp;redlink=1" class="new" title="cpp/experimental/any/swap2&#65288;&#39029;&#38754;&#19981;&#23384;&#22312;&#65289;"><span class="t-lines"><span>swap</span></span></a></div>
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<td>&#20132;&#25442;&#20004;&#20010; <code>any</code> &#23454;&#20363;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
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<div><a href="https://zh.cppreference.com/mwiki/index.php?title=cpp/experimental/any/any_cast&amp;action=edit&amp;redlink=1" class="new" title="cpp/experimental/any/any cast&#65288;&#39029;&#38754;&#19981;&#23384;&#22312;&#65289;"><span class="t-lines"><span>any_cast</span></span></a></div>
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<td>&#23545;&#34987;&#23481;&#32435;&#23545;&#35937;&#30340;&#31867;&#22411;&#23433;&#20840;&#35775;&#38382;<br />
<span class="t-mark">(&#20989;&#25968;&#27169;&#26495;)</span></td>
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<h3><span class="mw-headline" id=".E6.A6.82.E8.A6.81">&#27010;&#35201;</span></h3>
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<div class="cpp source-cpp">
<pre class="de1"><span class="kw1">namespace</span> std <span class="br0">{</span>
<span class="kw1">namespace</span> experimental <span class="br0">{</span>
<span class="kw1">inline</span> <span class="kw1">namespace</span> fundamentals_v1 <span class="br0">{</span>
<span class="kw1">class</span> bad_any_cast <span class="sy4">:</span> <span class="kw1">public</span> bad_cast
<span class="br0">{</span>
<span class="kw1">public</span><span class="sy4">:</span>
<span class="kw1">virtual</span> <span class="kw4">const</span> <span class="kw4">char</span><span class="sy2">*</span> what<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="br0">}</span><span class="sy4">;</span>
<span class="kw1">class</span> any
<span class="br0">{</span>
<span class="kw1">public</span><span class="sy4">:</span>
<span class="co1">// 6.3.1&#65292;any &#26500;&#36896;/&#26512;&#26500;</span>
any<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
any<span class="br0">(</span><span class="kw4">const</span> any<span class="sy3">&amp;</span> other<span class="br0">)</span><span class="sy4">;</span>
any<span class="br0">(</span>any<span class="sy3">&amp;&amp;</span> x<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> ValueType<span class="sy1">&gt;</span>
any<span class="br0">(</span>ValueType<span class="sy3">&amp;&amp;</span> value<span class="br0">)</span><span class="sy4">;</span>
~any<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
<span class="co1">// 6.3.2&#65292;any &#36171;&#20540;</span>
any<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> any<span class="sy3">&amp;</span> rhs<span class="br0">)</span><span class="sy4">;</span>
any<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span>any<span class="sy3">&amp;&amp;</span> rhs<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> ValueType<span class="sy1">&gt;</span>
any<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span>ValueType<span class="sy3">&amp;&amp;</span> rhs<span class="br0">)</span><span class="sy4">;</span>
<span class="co1">// 6.3.3&#65292;any &#20462;&#25913;&#20989;&#25968;</span>
<span class="kw4">void</span> clear<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw4">void</span> swap<span class="br0">(</span>any<span class="sy3">&amp;</span> rhs<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="co1">// 6.3.4&#65292;any &#25506;&#23519;&#20989;&#25968;</span>
<span class="kw4">bool</span> empty<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw4">const</span> type_info<span class="sy3">&amp;</span> type<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="br0">}</span><span class="sy4">;</span>
<span class="co1">// 6.4&#65292;&#38750;&#25104;&#21592;&#20989;&#25968;</span>
<span class="kw4">void</span> swap<span class="br0">(</span>any<span class="sy3">&amp;</span> x, any<span class="sy3">&amp;</span> y<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> ValueType<span class="sy1">&gt;</span>
ValueType any_cast<span class="br0">(</span><span class="kw4">const</span> any<span class="sy3">&amp;</span> operand<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> ValueType<span class="sy1">&gt;</span>
ValueType any_cast<span class="br0">(</span>any<span class="sy3">&amp;</span> operand<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> ValueType<span class="sy1">&gt;</span>
ValueType any_cast<span class="br0">(</span>any<span class="sy3">&amp;&amp;</span> operand<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> ValueType<span class="sy1">&gt;</span>
<span class="kw4">const</span> ValueType<span class="sy2">*</span> any_cast<span class="br0">(</span><span class="kw4">const</span> any<span class="sy2">*</span> operand<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> ValueType<span class="sy1">&gt;</span>
ValueType<span class="sy2">*</span> any_cast<span class="br0">(</span>any<span class="sy2">*</span> operand<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="br0">}</span> <span class="co1">// namespace fundamentals_v1</span>
<span class="br0">}</span> <span class="co1">// namespace experimental</span>
<span class="br0">}</span> <span class="co1">// namespace std</span></pre></div>
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