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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::ranges::</span>move, <span style="font-size:0.7em; line-height:130%">std::ranges::</span>move_result</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-algorithm.html">algorithm</a>&lrm; | <a href="cpp-algorithm-ranges.html">ranges</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-algorithm.html">&lt;algorithm&gt;</a></code></div>
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<div>&#35843;&#29992;&#31614;&#21517;</div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> std<span class="sy4">::</span><span class="me2">input_iterator</span> I, std<span class="sy4">::</span><span class="me2">sentinel_for</span><span class="sy1">&lt;</span>I<span class="sy1">&gt;</span> S, std<span class="sy4">::</span><span class="me2">weakly_incrementable</span> O <span class="sy1">&gt;</span><br /></span>
<p>requires &nbsp;std<span class="sy4">::</span><span class="me2">indirectly_movable</span><span class="sy1">&lt;</span>I, O<span class="sy1">&gt;</span><br />
<span class="kw4">constexpr</span> move_result<span class="sy1">&lt;</span>I, O<span class="sy1">&gt;</span><br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; move<span class="br0">(</span> I first, S last, O result <span class="br0">)</span><span class="sy4">;</span></div>
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<td>(1)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> ranges<span class="sy4">::</span><span class="me2">input_range</span> R, std<span class="sy4">::</span><span class="me2">weakly_incrementable</span> O <span class="sy1">&gt;</span><br /></span>
<p>requires &nbsp;std<span class="sy4">::</span><span class="me2">indirectly_movable</span><span class="sy1">&lt;</span>ranges<span class="sy4">::</span><span class="me2">iterator_t</span><span class="sy1">&lt;</span>R<span class="sy1">&gt;</span>, O<span class="sy1">&gt;</span><br />
<span class="kw4">constexpr</span> move_result<span class="sy1">&lt;</span>ranges<span class="sy4">::</span><span class="me2">borrowed_iterator_t</span><span class="sy1">&lt;</span>R<span class="sy1">&gt;</span>, O<span class="sy1">&gt;</span><br /></p>
&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; move<span class="br0">(</span> R<span class="sy3">&amp;&amp;</span> r, O result <span class="br0">)</span><span class="sy4">;</span></div>
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<td>(2)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
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<div>&#36741;&#21161;&#31867;&#22411;</div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span> <span class="kw1">class</span> I, <span class="kw1">class</span> O <span class="sy1">&gt;</span><br />
&nbsp; <span class="kw1">using</span> move_result <span class="sy1">=</span> ranges<span class="sy4">::</span><span class="me2">in_out_result</span><span class="sy1">&lt;</span>I, O<span class="sy1">&gt;</span><span class="sy4">;</span></span></div>
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<td>(3)</td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
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<div class="t-li1"><span class="t-li">1)</span> &#36171;&#20540; <code>[first, last)</code> &#25152;&#23450;&#20041;&#30340;&#33539;&#22260;&#37325;&#28857;&#20803;&#32032;&#21040;&#22987;&#20110; <code>result</code> &#30340;&#21478;&#19968;&#33539;&#22260;&#12290; &#33509; <code>result</code> &#22312;&#33539;&#22260; <code>[first, last)</code> &#20869;&#21017;&#34892;&#20026;&#26410;&#23450;&#20041;&#12290;&#27492;&#24773;&#20917;&#19979;&#21487;&#33021;&#21487;&#20197;&#29992; <span class="t-lc">ranges::move_backward</span> &#20195;&#26367;&#12290;</div>
<div class="t-li1"><span class="t-li">2)</span> &#21516; <span class="t-v">(1)</span> &#65292;&#20294;&#20197; <code>r</code> &#20026;&#28304;&#33539;&#22260;&#65292;&#22914;&#21516;&#20197; <span class="t-c"><span class="mw-geshi cpp source-cpp">ranges<span class="sy4">::</span><span class="me2">begin</span><span class="br0">(</span>r<span class="br0">)</span></span></span> &#20026; <code>first</code> &#24182;&#20197; <span class="t-c"><span class="mw-geshi cpp source-cpp">ranges<span class="sy4">::</span><span class="me2">end</span><span class="br0">(</span>r<span class="br0">)</span></span></span> &#20026; <code>last</code> &#12290;</div>
<p><i>&#34987;&#31227;&#21160;</i>&#30340;&#33539;&#22260;&#30340;&#20803;&#32032;&#23558;&#20173;&#28982;&#21547;&#26377;&#36866;&#24403;&#31867;&#22411;&#30340;&#21512;&#27861;&#20540;&#65292;&#20294;&#19981;&#24517;&#20026;&#19982;&#31227;&#21160;&#21069;&#30456;&#21516;&#30340;&#20540;&#12290;</p>
<p>&#27492;&#39029;&#38754;&#19978;&#25551;&#36848;&#30340;&#20223;&#20989;&#25968;&#23454;&#20307;&#26159; <i>niebloid</i> &#65292;&#21363;&#65306;</p>
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<li>&#35843;&#29992;&#23427;&#20204;&#20013;&#30340;&#20219;&#20309;&#19968;&#32773;&#26102;&#19981;&#21487;&#25351;&#23450;&#26174;&#24335;&#27169;&#26495;&#23454;&#21442;&#12290;</li>
<li>&#23427;&#20204;&#26080;&#19968;&#23545;<a href="cpp-language-adl.html">&#23454;&#21442;&#20381;&#36182;&#26597;&#25214;</a>&#21487;&#35265;&#12290;</li>
<li>&#22312;<a href="cpp-language-unqualified_lookup.html">&#36890;&#24120;&#26080;&#38480;&#23450;&#26597;&#25214;</a>&#23547;&#25214;&#20989;&#25968;&#35843;&#29992;&#36816;&#31639;&#31526;&#24038;&#20391;&#30340;&#21517;&#31216;&#25214;&#21040;&#23427;&#20204;&#20043;&#19968;&#26102;&#65292;&#23427;&#31105;&#27490;<a href="cpp-language-adl.html">&#23454;&#21442;&#20381;&#36182;&#26597;&#25214;</a>&#12290;</li>
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<p>&#23454;&#38469;&#19978;&#65292;&#23427;&#20204;&#33021;&#20197;&#20989;&#25968;&#23545;&#35937;&#65292;&#25110;&#20197;&#26576;&#20123;&#29305;&#27530;&#32534;&#35793;&#22120;&#25193;&#23637;&#23454;&#29616;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
<table class="t-par-begin">
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<td>first</td>
<td>-</td>
<td>&#35201;&#31227;&#21160;&#30340;&#20803;&#32032;&#33539;&#22260;&#30340;&#36215;&#22987;</td>
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<td>last</td>
<td>-</td>
<td>&#35201;&#31227;&#21160;&#20803;&#32032;&#33539;&#22260;&#30340;&#26411;&#23614;</td>
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<td>r</td>
<td>-</td>
<td>&#35201;&#31227;&#21160;&#30340;&#20803;&#32032;&#33539;&#22260;</td>
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<td>result</td>
<td>-</td>
<td>&#30446;&#26631;&#33539;&#22260;&#30340;&#36215;&#22987;</td>
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<h3><span class="mw-headline" id=".E5.A4.8D.E6.9D.82.E5.BA.A6">&#22797;&#26434;&#24230;</span></h3>
<p><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="br0">{</span>last, result <span class="sy2">+</span> N<span class="br0">}</span></span></span> &#65292;&#20854;&#20013;</p>
<div class="t-li1"><span class="t-li">1)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">N <span class="sy1">=</span> ranges<span class="sy4">::</span><span class="me2">distance</span><span class="br0">(</span>first, last<span class="br0">)</span></span></span> &#65307;</div>
<div class="t-li1"><span class="t-li">2)</span> <span class="t-c"><span class="mw-geshi cpp source-cpp">N <span class="sy1">=</span> ranges<span class="sy4">::</span><span class="me2">distance</span><span class="br0">(</span>r<span class="br0">)</span></span></span> &#12290;</div>
<h3><span class="mw-headline" id=".E5.A4.8D.E6.9D.82.E5.BA.A6_2">&#22797;&#26434;&#24230;</span></h3>
<p>&#20934;&#30830;&#36171;&#20540; <span class="t-c"><span class="mw-geshi cpp source-cpp">N</span></span> &#27425;&#12290;</p>
<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">&#27880;&#35299;</span></h3>
<p>&#31227;&#21160;&#37325;&#21472;&#30340;&#33539;&#22260;&#26102;&#65292; <code>ranges::move</code> &#36866;&#21512;&#21521;&#24038;&#31227;&#21160;&#65288;&#30446;&#26631;&#33539;&#22260;&#30340;&#36215;&#22987;&#22312;&#28304;&#33539;&#22260;&#22806;&#65289;&#65292;&#32780; <span class="t-lc">ranges::move_backward</span> &#36866;&#21512;&#21521;&#21491;&#31227;&#21160;&#65288;&#30446;&#26631;&#33539;&#22260;&#30340;&#26411;&#23614;&#22312;&#28304;&#33539;&#22260;&#22806;&#65289;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.AF.E8.83.BD.E7.9A.84.E5.AE.9E.E7.8E.B0">&#21487;&#33021;&#30340;&#23454;&#29616;</span></h3>
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<pre class="de1"><span class="kw1">struct</span> move_fn <span class="br0">{</span>
<span class="kw1">template</span><span class="sy1">&lt;</span>std<span class="sy4">::</span><span class="me2">input_iterator</span> I, std<span class="sy4">::</span><span class="me2">sentinel_for</span><span class="sy1">&lt;</span>I<span class="sy1">&gt;</span> S, std<span class="sy4">::</span><span class="me2">weakly_incrementable</span> O<span class="sy1">&gt;</span>
requires std<span class="sy4">::</span><span class="me2">indirectly_movable</span><span class="sy1">&lt;</span>I, O<span class="sy1">&gt;</span>
<span class="kw4">constexpr</span> ranges<span class="sy4">::</span><span class="me2">move_result</span><span class="sy1">&lt;</span>I, O<span class="sy1">&gt;</span>
operator<span class="br0">(</span><span class="br0">)</span><span class="br0">(</span> I first, S last, O result <span class="br0">)</span> <span class="kw4">const</span> <span class="br0">{</span>
<span class="kw1">for</span> <span class="br0">(</span><span class="sy4">;</span> first <span class="sy3">!</span><span class="sy1">=</span> last<span class="sy4">;</span> <span class="sy2">++</span>first, <span class="sy2">++</span>result<span class="br0">)</span>
<span class="sy2">*</span>result <span class="sy1">=</span> ranges<span class="sy4">::</span><span class="me2">iter_move</span><span class="br0">(</span>first<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">return</span> <span class="br0">{</span>std<span class="sy4">::</span><span class="me2">move</span><span class="br0">(</span>first<span class="br0">)</span>, std<span class="sy4">::</span><span class="me2">move</span><span class="br0">(</span>result<span class="br0">)</span><span class="br0">}</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="kw1">template</span><span class="sy1">&lt;</span>ranges<span class="sy4">::</span><span class="me2">input_range</span> R, std<span class="sy4">::</span><span class="me2">weakly_incrementable</span> O<span class="sy1">&gt;</span>
requires std<span class="sy4">::</span><span class="me2">indirectly_movable</span><span class="sy1">&lt;</span>ranges<span class="sy4">::</span><span class="me2">iterator_t</span><span class="sy1">&lt;</span>R<span class="sy1">&gt;</span>, O<span class="sy1">&gt;</span>
<span class="kw4">constexpr</span> ranges<span class="sy4">::</span><span class="me2">move_result</span><span class="sy1">&lt;</span>ranges<span class="sy4">::</span><span class="me2">borrowed_iterator_t</span><span class="sy1">&lt;</span>R<span class="sy1">&gt;</span>, O<span class="sy1">&gt;</span>
operator<span class="br0">(</span><span class="br0">)</span><span class="br0">(</span> R<span class="sy3">&amp;&amp;</span> r, O result <span class="br0">)</span> <span class="kw4">const</span> <span class="br0">{</span>
<span class="kw1">return</span> <span class="br0">(</span><span class="sy2">*</span>this<span class="br0">)</span><span class="br0">(</span>ranges<span class="sy4">::</span><span class="me2">begin</span><span class="br0">(</span>r<span class="br0">)</span>, ranges<span class="sy4">::</span><span class="me2">end</span><span class="br0">(</span>r<span class="br0">)</span>, std<span class="sy4">::</span><span class="me2">move</span><span class="br0">(</span>result<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span>
<span class="br0">}</span><span class="sy4">;</span>
<span class="kw1">inline</span> <span class="kw4">constexpr</span> move_fn move<span class="br0">{</span><span class="br0">}</span><span class="sy4">;</span></pre></div>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
<div class="t-example">
<p>&#20197;&#19979;&#20195;&#30721;&#20174;&#19968;&#20010;&#23481;&#22120;&#31227;&#21160;&#32447;&#31243;&#23545;&#35937;&#65288;&#23427;&#20204;&#33258;&#36523;<i>&#19981;&#21487;&#22797;&#21046;</i>&#65289;&#21040;&#21478;&#19968;&#23481;&#22120;&#12290;</p>
<div class="t-example-live-link"></div>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="cpp source-cpp">
<pre class="de1"><span class="co2">#include &lt;algorithm&gt;</span>
<span class="co2">#include &lt;iostream&gt;</span>
<span class="co2">#include &lt;vector&gt;</span>
<span class="co2">#include &lt;list&gt;</span>
<span class="co2">#include &lt;iterator&gt;</span>
<span class="co2">#include &lt;thread&gt;</span>
<span class="co2">#include &lt;chrono&gt;</span>
<span class="kw1">using</span> <span class="kw1">namespace</span> std<span class="sy4">::</span><span class="me2">literals</span><span class="sy4">::</span><span class="me2">chrono_literals</span><span class="sy4">;</span>
<span class="kw4">void</span> f<span class="br0">(</span><a href="cpp-chrono-duration.html"><span class="kw996">std::<span class="me2">chrono</span><span class="sy4">::</span><span class="me2">milliseconds</span></span></a> n<span class="br0">)</span>
<span class="br0">{</span>
<a href="cpp-thread-sleep_for.html"><span class="kw2149">std::<span class="me2">this_thread</span><span class="sy4">::</span><span class="me2">sleep_for</span></span></a><span class="br0">(</span>n<span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;thread with n=&quot;</span> <span class="sy1">&lt;&lt;</span> n.<span class="me1">count</span><span class="br0">(</span><span class="br0">)</span> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;ms ended&quot;</span> <span class="sy1">&lt;&lt;</span> <a href="cpp-io-manip-endl.html"><span class="kw1791">std::<span class="me2">endl</span></span></a><span class="sy4">;</span>
<span class="br0">}</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<a href="cpp-container-vector.html"><span class="kw1269">std::<span class="me2">vector</span></span></a><span class="sy1">&lt;</span>std<span class="sy4">::</span><span class="me2">jthread</span><span class="sy1">&gt;</span> v<span class="sy4">;</span>
v.<span class="me1">emplace_back</span><span class="br0">(</span>f, 400ms<span class="br0">)</span><span class="sy4">;</span>
v.<span class="me1">emplace_back</span><span class="br0">(</span>f, 600ms<span class="br0">)</span><span class="sy4">;</span>
v.<span class="me1">emplace_back</span><span class="br0">(</span>f, 800ms<span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-container-list.html"><span class="kw1275">std::<span class="me2">list</span></span></a><span class="sy1">&lt;</span>std<span class="sy4">::</span><span class="me2">jthread</span><span class="sy1">&gt;</span> l<span class="sy4">;</span>
<span class="co1">// std::ranges::copy() &#19981;&#33021;&#32534;&#35793;&#65292;&#22240;&#20026; std::jthread &#19981;&#21487;&#22797;&#21046;</span>
std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">move</span><span class="br0">(</span>v, <a href="cpp-iterator-back_inserter.html"><span class="kw665">std::<span class="me2">back_inserter</span></span></a><span class="br0">(</span>l<span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
</div>
<p>&#36755;&#20986;&#65306;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="text source-text">
<pre class="de1">thread with n=400ms ended
thread with n=600ms ended
thread with n=800ms ended</pre></div>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
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<div class="t-dsc-member-div">
<div><a href="cpp-algorithm-ranges-move_backward.html"><span class="t-lines"><span>ranges::move_backword</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
</div>
</td>
<td>&#25353;&#20174;&#21518;&#24448;&#21069;&#30340;&#39034;&#24207;&#31227;&#21160;&#26576;&#19968;&#33539;&#22260;&#30340;&#20803;&#32032;&#21040;&#26032;&#30340;&#20301;&#32622;<br />
<span class="t-mark">(niebloid)</span></td>
</tr>
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<div class="t-dsc-member-div">
<div><a href="cpp-algorithm-ranges-copy.html"><span class="t-lines"><span>ranges::copy</span><span>ranges::copy_if</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
</div>
</td>
<td>&#23558;&#26576;&#19968;&#33539;&#22260;&#30340;&#20803;&#32032;&#22797;&#21046;&#21040;&#19968;&#20010;&#26032;&#30340;&#20301;&#32622;<br />
<span class="t-mark">(niebloid)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-algorithm-ranges-copy_backward.html"><span class="t-lines"><span>ranges::copy_backward</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
</div>
</td>
<td>&#25353;&#20174;&#21518;&#24448;&#21069;&#30340;&#39034;&#24207;&#22797;&#21046;&#19968;&#20010;&#33539;&#22260;&#20869;&#30340;&#20803;&#32032;<br />
<span class="t-mark">(niebloid)</span></td>
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<div class="t-dsc-member-div">
<div><a href="cpp-algorithm-move.html"><span class="t-lines"><span>move</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>&#23558;&#26576;&#19968;&#33539;&#22260;&#30340;&#20803;&#32032;&#31227;&#21160;&#21040;&#19968;&#20010;&#26032;&#30340;&#20301;&#32622;<br />
<span class="t-mark">(&#20989;&#25968;&#27169;&#26495;)</span></td>
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<td>
<div class="t-dsc-member-div">
<div><a href="cpp-utility-move.html"><span class="t-lines"><span>move</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
</div>
</td>
<td>&#33719;&#24471;&#21491;&#20540;&#24341;&#29992;<br />
<span class="t-mark">(&#20989;&#25968;&#27169;&#26495;)</span></td>
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<div class="visualClear"></div>
</div>
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