112 lines
6.6 KiB
HTML
112 lines
6.6 KiB
HTML
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_iterator_mergeable skin-cppreference2 action-view cpp-navbar">
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::</span>mergeable</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-iterator.html">iterator</a></span></div>
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<div>定义于头文件 <code><a href="cpp-header-iterator.html"><iterator></a></code></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1"><</span> <span class="kw1">class</span> I1, <span class="kw1">class</span> I2, <span class="kw1">class</span> Out, <span class="kw1">class</span> R <span class="sy1">=</span> ranges<span class="sy4">::</span><span class="me2">less</span>,<br /></span>
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<p> <span class="kw1">class</span> P1 <span class="sy1">=</span> std<span class="sy4">::</span><span class="me2">identity</span>, <span class="kw1">class</span> P2 <span class="sy1">=</span> std<span class="sy4">::</span><span class="me2">identity</span> <span class="sy1">></span><br />
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concept mergeable <span class="sy1">=</span><br />
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std<span class="sy4">::</span><span class="me2">input_iterator</span><span class="sy1"><</span>I1<span class="sy1">></span> <span class="sy3">&&</span><br />
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std<span class="sy4">::</span><span class="me2">input_iterator</span><span class="sy1"><</span>I2<span class="sy1">></span> <span class="sy3">&&</span><br />
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std<span class="sy4">::</span><span class="me2">weakly_incrementable</span><span class="sy1"><</span>Out<span class="sy1">></span> <span class="sy3">&&</span><br />
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std<span class="sy4">::</span><span class="me2">indirectly_copyable</span><span class="sy1"><</span>I1, Out<span class="sy1">></span> <span class="sy3">&&</span><br />
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std<span class="sy4">::</span><span class="me2">indirectly_copyable</span><span class="sy1"><</span>I2, Out<span class="sy1">></span> <span class="sy3">&&</span><br />
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std<span class="sy4">::</span><span class="me2">indirect_strict_weak_order</span><span class="sy1"><</span>R,<br />
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std<span class="sy4">::</span><span class="me2">projected</span><span class="sy1"><</span>I1, P1<span class="sy1">></span>,<br /></p>
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std<span class="sy4">::</span><span class="me2">projected</span><span class="sy1"><</span>I2, P2<span class="sy1">>></span><span class="sy4">;</span></div>
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<td><span class="t-mark-rev t-since-cxx20">(C++20 起)</span></td>
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<p><code>mergeable</code> 概念指定按照 <code>R</code> 所施加的严格弱序归并二个输入范围到单个输出范围的算法的要求。</p>
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<h3><span class="mw-headline" id=".E8.AF.AD.E4.B9.89.E8.A6.81.E6.B1.82">语义要求</span></h3>
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<p><code>mergeable</code> 仅若其所蕴含的所有概念均被实现才得以实现。</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">参阅</span></h3>
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<div><a href="cpp-algorithm-ranges-merge.html"><span class="t-lines"><span>ranges::merge</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
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</div>
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<td>归并二个已排序范围<br />
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<span class="t-mark">(niebloid)</span></td>
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<div><a href="cpp-algorithm-ranges-set_union.html"><span class="t-lines"><span>ranges::set_union</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
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</div>
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</td>
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<td>计算两个集合的并集<br />
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<span class="t-mark">(niebloid)</span></td>
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<div><a href="cpp-algorithm-ranges-set_intersection.html"><span class="t-lines"><span>ranges::set_intersection</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
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</div>
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</td>
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<td>计算两个集合的交集<br />
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<span class="t-mark">(niebloid)</span></td>
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<div><a href="cpp-algorithm-ranges-set_difference.html"><span class="t-lines"><span>ranges::set_difference</span></span></a></div>
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<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx20">(C++20)</span></span></span></div>
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</div>
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</td>
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<td>计算两个集合的差集<br />
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<span class="t-mark">(niebloid)</span></td>
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<div><a href="cpp-algorithm-ranges-set_symmetric_difference.html"><span class="t-lines"><span>ranges::set_symmetric_difference</span></span></a></div>
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<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>
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<td>计算两个集合的对称差<br />
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<span class="t-mark">(niebloid)</span></td>
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