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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::ranges::</span>borrowed_iterator_t, <span style="font-size:0.7em; line-height:130%">std::ranges::</span>borrowed_subrange_t</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-ranges.html">ranges</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-ranges.html">&lt;ranges&gt;</a></code></div>
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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">range</span> R <span class="sy1">&gt;</span><br />
<span class="kw1">using</span> borrowed_iterator_t <span class="sy1">=</span> <span class="coMULTI">/* see below */</span><span class="sy4">;</span></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">range</span> R <span class="sy1">&gt;</span><br />
<span class="kw1">using</span> borrowed_subrange_t <span class="sy1">=</span> <span class="coMULTI">/* see below */</span><span class="sy4">;</span></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 class="t-li1"><span class="t-li">1)</span> &#33509; <code>R</code> &#23454;&#29616; <a href="cpp-ranges-borrowed_range.html"><code>borrowed_range</code></a> &#21017;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">iterator_t</span><span class="sy1">&lt;</span>R<span class="sy1">&gt;</span></span></span> &#65292;&#21542;&#21017;&#20026; <span class="t-lc">std::ranges::dangling</span> &#12290;</div>
<div class="t-li1"><span class="t-li">2)</span> &#33509; <code>R</code> &#23454;&#29616; <a href="cpp-ranges-borrowed_range.html"><code>borrowed_range</code></a> &#21017;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">subrange</span><span class="sy1">&lt;</span>std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">iterator_t</span><span class="sy1">&lt;</span>R<span class="sy1">&gt;&gt;</span></span></span> &#65292;&#21542;&#21017;&#20026; <span class="t-lc">std::ranges::dangling</span> &#12290;</div>
<p>&#26576;&#20123;<a href="cpp-algorithm-ranges.html">&#21463;&#32422;&#26463;&#31639;&#27861;</a>&#29992;&#27492;&#20108;&#27169;&#26495;&#21035;&#21517;&#36991;&#20813;&#36820;&#22238;&#28508;&#22312;&#24748;&#22402;&#30340;&#36845;&#20195;&#22120;&#25110;&#35270;&#22270;&#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">template</span><span class="sy1">&lt;</span> std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">range</span> R <span class="sy1">&gt;</span>
<span class="kw1">using</span> borrowed_iterator_t <span class="sy1">=</span> <a href="cpp-types-conditional.html"><span class="kw634">std::<span class="me2">conditional_t</span></span></a><span class="sy1">&lt;</span>std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">borrowed_range</span><span class="sy1">&lt;</span>R<span class="sy1">&gt;</span>,
std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">iterator_t</span><span class="sy1">&lt;</span>R<span class="sy1">&gt;</span>, std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">dangling</span><span class="sy1">&gt;</span><span class="sy4">;</span></pre></div>
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<pre class="de1"><span class="kw1">template</span><span class="sy1">&lt;</span> std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">range</span> R <span class="sy1">&gt;</span>
<span class="kw1">using</span> borrowed_subrange_t <span class="sy1">=</span> <a href="cpp-types-conditional.html"><span class="kw634">std::<span class="me2">conditional_t</span></span></a><span class="sy1">&lt;</span>std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">borrowed_range</span><span class="sy1">&lt;</span>R<span class="sy1">&gt;</span>,
std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">subrange</span><span class="sy1">&lt;</span>std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">iterator_t</span><span class="sy1">&lt;</span>R<span class="sy1">&gt;&gt;</span>, std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">dangling</span><span class="sy1">&gt;</span><span class="sy4">;</span></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><a href="cpp-ranges-dangling.html"><span class="t-lines"><span>ranges::dangling</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
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<td>&#21344;&#20301;&#31867;&#22411;&#65292;&#25351;&#31034;&#19981;&#24212;&#36820;&#22238;&#36845;&#20195;&#22120;&#25110;&#23376;&#33539;&#22260;&#65292;&#22240;&#20026;&#23427;&#21487;&#33021;&#24748;&#22402;<br />
<span class="t-mark">(&#31867;)</span></td>
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