50 lines
3.3 KiB
HTML
50 lines
3.3 KiB
HTML
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<title>std::ranges::transform_view 的推导指引</title>
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<body class="mediawiki ltr sitedir-ltr ns-0 ns-subject page-cpp_ranges_transform_view_deduction_guides skin-cppreference2 action-view cpp-navbar">
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<h1 id="firstHeading" class="firstHeading"><code>std::ranges::transform_view</code> 的推导指引</h1>
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<div id="contentSub"><span class="subpages">< <a href="cpp.html">cpp</a>‎ | <a href="cpp-ranges.html">ranges</a>‎ | <a href="cpp-ranges-transform_view.html">transform view</a></span></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> R, <span class="kw1">class</span> F <span class="sy1">></span><br />
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transform_view<span class="br0">(</span> R<span class="sy3">&&</span>, F <span class="br0">)</span> <span class="sy2">-</span><span class="sy1">></span> transform_view<span class="sy1"><</span>views<span class="sy4">::</span><span class="me2">all_t</span><span class="sy1"><</span>R<span class="sy1">></span>, F<span class="sy1">></span><span class="sy4">;</span></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>为 <span class="t-lc">std::ranges::transform_view</span> 提供一个<a href="cpp-language-class_template_argument_deduction.html">推导指引</a>以允许从 <a href="cpp-ranges-range.html"><code>range</code></a> 和变换函数推导。</p>
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<p>若 <code>R</code> 为 <a href="cpp-ranges-view.html"><code>view</code></a> ，则推导的类型是 <span class="t-c"><span class="mw-geshi cpp source-cpp">transform_view<span class="sy1"><</span>R, F<span class="sy1">></span></span></span> ；否则推导的类型经常为 <span class="t-c"><span class="mw-geshi cpp source-cpp">transform_view<span class="sy1"><</span>ranges<span class="sy4">::</span><span class="me2">ref_view</span><span class="sy1"><</span>R<span class="sy1">></span>, F<span class="sy1">></span></span></span> 。</p>
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<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">示例</span></h3>
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<td class="mbox-text" style="">本节未完成<br />
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原因：暂无示例</td>
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