65 lines
4.3 KiB
HTML
65 lines
4.3 KiB
HTML
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<title>实验性库头文件 <experimental/ranges/tuple></title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">实验性库头文件</span> <experimental/ranges/tuple></h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-header.html">header</a>‎ | <a href="cpp-header-experimental.html">experimental</a></span></div>
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<p>此头文件是<a href="cpp-experimental-ranges.html">范围</a>库的一部分。</p>
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<h3><span class="mw-headline" id=".E5.B8.A6.E6.A0.87.E7.AD.BE.E5.85.83.E7.BB.84">带标签元组</span></h3>
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<div>定义于命名空间 <code>std::experimental::ranges</code></div>
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<div><a href="cpp-experimental-ranges-utility-tagged_tuple.html"><span class="t-lines"><span>tagged_tuple</span></span></a></div>
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<td>有标签 <span class="t-lc"><a href="cpp-utility-tuple.html">std::tuple</a></span> 的别名模版<br />
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<span class="t-mark">(别名模板)</span></td>
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<div><a href="cpp-experimental-ranges-utility-make_tagged_tuple.html"><span class="t-lines"><span>make_tagged_tuple</span></span></a></div>
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</td>
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<td>用于创建 <code>tagged_tuple</code> 的便利函数<br />
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<span class="t-mark">(函数模板)</span></td>
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<h3><span class="mw-headline" id=".E6.A6.82.E8.A6.81">概要</span></h3>
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<div class="cpp source-cpp">
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<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">namespace</span> ranges <span class="br0">{</span> <span class="kw1">inline</span> <span class="kw1">namespace</span> v1 <span class="br0">{</span>
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<span class="kw1">template</span> <span class="sy1"><</span>TaggedType... <span class="me1">Types</span><span class="sy1">></span>
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<span class="kw1">using</span> tagged_tuple <span class="sy1">=</span> tagged<span class="sy1"><</span>tuple<span class="sy1"><</span><span class="coMULTI">/* TAGELEM */</span><span class="br0">(</span>Types<span class="br0">)</span>...<span class="sy1">></span>,
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<span class="coMULTI">/* TAGSPEC */</span><span class="br0">(</span>Types<span class="br0">)</span>...<span class="sy1">></span><span class="sy4">;</span>
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<span class="kw1">template</span> <span class="sy1"><</span>TagSpecifier... <span class="me1">Tags</span>, <span class="kw1">class</span>... <span class="me1">Types</span><span class="sy1">></span>
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requires sizeof...<span class="br0">(</span>Tags<span class="br0">)</span> <span class="sy1">==</span> sizeof...<span class="br0">(</span>Types<span class="br0">)</span>
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<span class="kw4">constexpr</span> <span class="coMULTI">/* 见定义 */</span> make_tagged_tuple<span class="br0">(</span>Types<span class="sy3">&&</span>... <span class="me1">t</span><span class="br0">)</span><span class="sy4">;</span>
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<span class="br0">}</span><span class="br0">}</span><span class="br0">}</span><span class="br0">}</span></pre></div>
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