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<title>std::ranges::transform_view<V,F>::iterator<Const>::operator*</title>
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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::ranges::transform_view<V,F>::<i>iterator</i><Const>::</span>operator*</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>‎ | <a href="cpp-ranges-transform_view-iterator.html">iterator</a></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">constexpr</span> decltype<span class="br0">(</span><span class="kw4">auto</span><span class="br0">)</span> operator<span class="sy2">*</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</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>返回变换后的元素。</p>
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<p>等价地返回 <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-utility-functional-invoke.html"><span class="kw1058">std::<span class="me2">invoke</span></span></a><span class="br0">(</span><span class="sy2">*</span>parent_<span class="sy2">-</span><span class="sy1">></span>fun_, <span class="sy2">*</span>current_<span class="br0">)</span></span></span> ,其中 <code>*parent_->fun_</code> 是存储于亲 <code>transform_view</code> 的变换函数,而 <code>current_</code> 是指向 <code>V</code> 中的底层迭代器。</p>
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<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">参数</span></h3>
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<p>(无)</p>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">返回值</span></h3>
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<p>变换后的元素。</p>
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<h3><span class="mw-headline" id=".E6.B3.A8.E8.A7.A3">注解</span></h3>
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<p>不提供 <span class="t-c"><span class="mw-geshi cpp source-cpp">operator<span class="sy2">-</span><span class="sy1">></span></span></span> 。</p>
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<p>若指向亲 <code>transform_view</code> 的指针为空(例如若 <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span>this</span></span> 为默认构造),或若亲 <code>transform_view</code> 不保有变换函数(例如若亲 <code>transform_view</code> 为默认构造,而变换函数不可默认构造)。</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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