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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/ranges/utility&gt;</h1>
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<p>&#27492;&#22836;&#25991;&#20214;&#26159;<a href="cpp-experimental-ranges.html">&#33539;&#22260;</a>&#24211;&#30340;&#19968;&#37096;&#20998;&#12290;</p>
<h3><span class="mw-headline" id=".E5.B7.A5.E5.85.B7.E7.BB.84.E4.BB.B6">&#24037;&#20855;&#32452;&#20214;</span></h3>
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<div>&#23450;&#20041;&#20110;&#21629;&#21517;&#31354;&#38388; <code>std::experimental::ranges</code></div>
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<div><a href="cpp-experimental-ranges-utility-swap.html"><span class="t-lines"><span>swap</span></span></a></div>
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<div>&#23450;&#20041;&#20110;&#21629;&#21517;&#31354;&#38388; <code>std::experimental::ranges</code></div>
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<div><a href="cpp-experimental-ranges-utility-TagSpecifier.html"><span class="t-lines"><span>TagSpecifier</span></span></a></div>
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<div>&#23450;&#20041;&#20110;&#21629;&#21517;&#31354;&#38388; <code>std::experimental::ranges</code></div>
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<div><a href="cpp-experimental-ranges-utility-tagged.html"><span class="t-lines"><span>tagged</span></span></a></div>
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<div><a href="cpp-experimental-ranges-utility-make_tagged_pair.html"><span class="t-lines"><span>make_tagged_pair</span></span></a></div>
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<td>&#29992;&#20110;&#21019;&#24314; <code>tagged_pair</code> &#30340;&#20415;&#21033;&#20989;&#25968;<br />
<span class="t-mark">(&#20989;&#25968;&#27169;&#26495;)</span></td>
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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>
<span class="kw1">namespace</span> <span class="br0">{</span>
<span class="kw4">constexpr</span> <span class="coMULTI">/* &#26410;&#25351;&#26126; */</span> swap <span class="sy1">=</span> <span class="coMULTI">/* &#26410;&#25351;&#26126; */</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="kw1">template</span><span class="sy1">&lt;</span>MoveConstructible T, <span class="kw1">class</span> U <span class="sy1">=</span> T<span class="sy1">&gt;</span>
requires Assignable<span class="sy1">&lt;</span>T<span class="sy3">&amp;</span>, U<span class="sy1">&gt;</span>
<span class="kw4">constexpr</span> T exchange<span class="br0">(</span>T<span class="sy3">&amp;</span> obj, U<span class="sy3">&amp;&amp;</span> new_val<span class="br0">)</span> <span class="kw1">noexcept</span><span class="br0">(</span><span class="coMULTI">/* &#35265;&#23450;&#20041; */</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span>
concept <span class="kw4">bool</span> TagSpecifier <span class="sy1">=</span> <span class="coMULTI">/* &#35265;&#23450;&#20041; */</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> F<span class="sy1">&gt;</span>
concept <span class="kw4">bool</span> TaggedType <span class="sy1">=</span> <span class="coMULTI">/* &#35265;&#23450;&#20041; */</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> Base, TagSpecifier... <span class="me1">Tags</span><span class="sy1">&gt;</span>
requires sizeof...<span class="br0">(</span>Tags<span class="br0">)</span> <span class="sy1">&lt;=</span> <a href="cpp-utility-tuple-tuple_size.html"><span class="kw1101">std::<span class="me2">tuple_size</span></span></a><span class="sy1">&lt;</span>Base<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">value</span>
<span class="kw1">struct</span> tagged<span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1">&lt;</span>TaggedType T1, TaggedType T2<span class="sy1">&gt;</span>
<span class="kw1">using</span> tagged_pair <span class="sy1">=</span> <span class="coMULTI">/* &#35265;&#23450;&#20041; */</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1">&lt;</span>TagSpecifier Tag1, TagSpecifier Tag2, <span class="kw1">class</span> T1, <span class="kw1">class</span> T2<span class="sy1">&gt;</span>
<span class="kw4">constexpr</span> <span class="coMULTI">/* &#35265;&#23450;&#20041; */</span> make_tagged_pair<span class="br0">(</span>T1<span class="sy3">&amp;&amp;</span> x, T2<span class="sy3">&amp;&amp;</span> y<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span><span class="br0">}</span><span class="br0">}</span><span class="br0">}</span>
<span class="kw1">namespace</span> std <span class="br0">{</span>
<span class="kw1">template</span> <span class="sy1">&lt;</span><span class="kw1">class</span> Base, <span class="kw1">class</span>... <span class="me1">Tags</span><span class="sy1">&gt;</span>
<span class="kw1">struct</span> tuple_size<span class="sy1">&lt;</span>experimental<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">tagged</span><span class="sy1">&lt;</span>Base, Tags...<span class="sy1">&gt;&gt;</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1">&lt;</span>size_t N, <span class="kw1">class</span> Base, <span class="kw1">class</span>... <span class="me1">Tags</span><span class="sy1">&gt;</span>
<span class="kw1">struct</span> tuple_element<span class="sy1">&lt;</span>N, experimental<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">tagged</span><span class="sy1">&lt;</span>Base, Tags...<span class="sy1">&gt;&gt;</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
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