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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::ranges::</span><span style="font-size:0.7em; line-height:130%">views::</span>drop, <span style="font-size:0.7em; line-height:130%">std::ranges::</span>drop_view</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">view</span> V <span class="sy1">&gt;</span><br />
<span class="kw1">class</span> drop_view <span class="sy4">:</span> <span class="kw1">public</span> ranges<span class="sy4">::</span><span class="me2">view_interface</span><span class="sy1">&lt;</span>drop_view<span class="sy1">&lt;</span>V<span class="sy1">&gt;&gt;</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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<tr class="t-dcl t-since-cxx20">
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">namespace</span> views <span class="br0">{</span><br /></span>
<p>&nbsp; &nbsp; <span class="kw1">inline</span> <span class="kw4">constexpr</span> <span class="coMULTI">/*unspecified*/</span> drop <span class="sy1">=</span> <span class="coMULTI">/*unspecified*/</span><span class="sy4">;</span><br /></p>
<span class="br0">}</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> &#30001;&#36339;&#36807;&#39318; <i>N</i> &#20010;&#20803;&#32032;&#30340;&#24213;&#23618;&#20803;&#32032;&#24207;&#21015;&#26500;&#25104;&#30340;&#33539;&#22260;&#36866;&#37197;&#22120;&#12290;</div>
<div class="t-li1"><span class="t-li">2)</span> <a href="cpp-ranges.html#.E8.8C.83.E5.9B.B4.E9.80.82.E9.85.8D.E5.99.A8.E5.AF.B9.E8.B1.A1">&#33539;&#22260;&#36866;&#37197;&#22120;&#23545;&#35937;</a>&#12290;&#32473;&#23450; <code>T</code> &#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">remove_cvref_t</span><span class="sy1">&lt;</span>decltype<span class="br0">(</span><span class="br0">(</span>e<span class="br0">)</span><span class="br0">)</span><span class="sy1">&gt;</span></span></span> &#32780; <code>D</code> &#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp">ranges<span class="sy4">::</span><span class="me2">range_difference_t</span><span class="sy1">&lt;</span>decltype<span class="br0">(</span><span class="br0">(</span>e<span class="br0">)</span><span class="br0">)</span><span class="sy1">&gt;</span></span></span>) &#65292;&#34920;&#36798;&#24335; <span class="t-c"><span class="mw-geshi cpp source-cpp">views<span class="sy4">::</span><span class="me2">drop</span><span class="br0">(</span>e, f<span class="br0">)</span></span></span> <i>&#34920;&#36798;&#24335;&#31561;&#20215;</i>&#20110;&#65306;
<ul>
<li><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="br0">(</span><span class="br0">(</span><span class="kw4">void</span><span class="br0">)</span>f, <span class="kw1">static_cast</span><span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="br0">(</span>e<span class="br0">)</span><span class="br0">)</span></span></span> &#65292;&#33509; <code>T</code> &#20026; <span class="t-lc">ranges::empty_view</span> &#65292;&#38500;&#20102; <span class="t-c"><span class="mw-geshi cpp source-cpp">e</span></span> &#19982; <span class="t-c"><span class="mw-geshi cpp source-cpp">f</span></span> &#30340;&#27714;&#20540;&#20026;&#19981;&#30830;&#23450;&#39034;&#24207;&#65307;</li>
<li>&#21542;&#21017;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp">T<span class="br0">(</span>ranges<span class="sy4">::</span><span class="me2">begin</span><span class="br0">(</span>e<span class="br0">)</span> <span class="sy2">+</span> inc, ranges<span class="sy4">::</span><span class="me2">end</span><span class="br0">(</span>e<span class="br0">)</span>, <span class="coMULTI">/*to-unsigned-like*/</span><span class="br0">(</span>ranges<span class="sy4">::</span><span class="me2">distance</span><span class="br0">(</span>e<span class="br0">)</span> <span class="sy2">-</span> inc<span class="br0">)</span><span class="br0">)</span></span></span> &#65292;&#33509; <code>T</code> &#26159; <span class="t-c"><span class="mw-geshi cpp source-cpp">ranges<span class="sy4">::</span><span class="me2">subrange</span></span></span> &#23454;&#29616; <a href="cpp-ranges-random_access_range.html"><code>random_access_range</code></a> &#21450; <a href="cpp-ranges-sized_range.html"><code>sized_range</code></a> &#30340;&#29305;&#21270;&#19988; <code>T</code> &#38656;&#35201;&#23384;&#20648;&#22823;&#23567;&#65288;&#32454;&#33410;&#35265; <a href="cpp-ranges-subrange-subrange.html"><tt>ranges::subrange::subrange</tt></a> &#65289;&#65292;&#20854;&#20013; <code>inc</code> &#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp"><a href="cpp-algorithm-min.html"><span class="kw1642">std::<span class="me2">min</span></span></a><span class="sy1">&lt;</span>D<span class="sy1">&gt;</span><span class="br0">(</span>ranges<span class="sy4">::</span><span class="me2">distance</span><span class="br0">(</span>e<span class="br0">)</span>, f<span class="br0">)</span></span></span> &#65307;</li>
<li>&#21542;&#21017;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp">U<span class="br0">(</span>ranges<span class="sy4">::</span><span class="me2">begin</span><span class="br0">(</span>e<span class="br0">)</span> <span class="sy2">+</span> <a href="cpp-algorithm-min.html"><span class="kw1642">std::<span class="me2">min</span></span></a><span class="sy1">&lt;</span>D<span class="sy1">&gt;</span><span class="br0">(</span>ranges<span class="sy4">::</span><span class="me2">distance</span><span class="br0">(</span>e<span class="br0">)</span>, f<span class="br0">)</span>, ranges<span class="sy4">::</span><span class="me2">end</span><span class="br0">(</span>e<span class="br0">)</span><span class="br0">)</span></span></span> &#65292;&#33509; <code>T</code> &#20026; <span class="t-lc">std::span</span>&#12289; <span class="t-lc"><a href="cpp-string-basic_string_view.html">std::basic_string_view</a></span>&#12289; <span class="t-lc">ranges::iota_view</span> &#25110; <span class="t-lc">ranges::subrange</span> &#30340;&#23454;&#29616; <a href="cpp-ranges-random_access_range.html"><code>random_access_range</code></a> &#21450; <a href="cpp-ranges-sized_range.html"><code>sized_range</code></a> &#30340;&#29305;&#21270;&#65292;&#20854;&#20013; <code>U</code> &#20026;</li>
</ul>
<dl>
<dd>
<ul>
<li><span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">span</span><span class="sy1">&lt;</span><span class="kw1">typename</span> T<span class="sy4">::</span><span class="me2">element_type</span><span class="sy1">&gt;</span></span></span> &#65292;&#33509; <code>T</code> &#20026; <span class="t-lc">std::span</span> &#30340;&#29305;&#21270;&#65307;</li>
<li>&#21542;&#21017;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp">T</span></span> &#65307;</li>
</ul>
</dd>
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<ul>
<li>&#21542;&#21017;&#20026; <span class="t-c"><span class="mw-geshi cpp source-cpp">drop_view<span class="br0">(</span>e, f<span class="br0">)</span></span></span> &#12290;</li>
</ul>
&#25152;&#26377;&#24773;&#20917;&#19979; <span class="t-c"><span class="mw-geshi cpp source-cpp">decltype<span class="br0">(</span><span class="br0">(</span>f<span class="br0">)</span><span class="br0">)</span></span></span> &#24517;&#39035;&#23454;&#29616; <span class="t-c"><span class="mw-geshi cpp source-cpp">std<span class="sy4">::</span><span class="me2">convertible_to</span><span class="sy1">&lt;</span>D<span class="sy1">&gt;</span></span></span> &#12290;</div>
<p><code>drop_view</code> &#22312;&#24213;&#23618;&#33539;&#22260; <code>V</code> &#20998;&#21035;&#23454;&#29616;&#27010;&#24565; <a href="cpp-ranges-contiguous_range.html"><code>contiguous_range</code></a>&#12289; <a href="cpp-ranges-random_access_range.html"><code>random_access_range</code></a>&#12289; <a href="cpp-ranges-bidirectional_range.html"><code>bidirectional_range</code></a>&#12289; <a href="cpp-ranges-forward_range.html"><code>forward_range</code></a>&#12289; <a href="cpp-ranges-input_range.html"><code>input_range</code></a>&#12289; <a href="cpp-ranges-common_range.html"><code>common_range</code></a> &#21450; <a href="cpp-ranges-sized_range.html"><code>sized_range</code></a> &#26102;&#23454;&#29616;&#35813;&#27010;&#24565;&#12290;</p>
<h3><span class="mw-headline" id=".E8.A1.A8.E8.BE.BE.E5.BC.8F.E7.AD.89.E4.BB.B7">&#34920;&#36798;&#24335;&#31561;&#20215;</span></h3>
<p>&#34920;&#36798;&#24335; <span class="t-c"><span class="mw-geshi cpp source-cpp">e</span></span> <i>&#34920;&#36798;&#24335;&#31561;&#20215;</i>&#20110;&#34920;&#36798;&#24335; <span class="t-c"><span class="mw-geshi cpp source-cpp">f</span></span> &#65292;&#33509; <span class="t-c"><span class="mw-geshi cpp source-cpp">e</span></span> &#19982; <span class="t-c"><span class="mw-geshi cpp source-cpp">f</span></span> &#25317;&#26377;&#30456;&#21516;&#25928;&#26524;&#65292;&#22343;&#20026;<a href="cpp-language-noexcept_spec.html">&#28508;&#22312;&#25243;&#20986;</a>&#25110;&#22343;&#38750;&#28508;&#22312;&#25243;&#20986;&#65288;&#21363; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw1">noexcept</span><span class="br0">(</span>e<span class="br0">)</span> <span class="sy1">==</span> <span class="kw1">noexcept</span><span class="br0">(</span>f<span class="br0">)</span></span></span> &#65289;&#65292;&#19988;&#22343;&#20026;<a href="cpp-language-constant_expression.html">&#24120;&#37327;&#23376;&#34920;&#36798;&#24335;</a>&#25110;&#22343;&#38750;&#24120;&#37327;&#23376;&#34920;&#36798;&#24335;&#12290;</p>
<h3><span class="mw-headline" id=".E6.88.90.E5.91.98.E5.87.BD.E6.95.B0">&#25104;&#21592;&#20989;&#25968;</span></h3>
<table class="t-dsc-begin">
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<td>
<div class="t-dsc-member-div t-dsc-member-nobold-div">
<div><a href="cpp-ranges-drop_view-drop_view.html"><span class="t-lines"><span>(&#26500;&#36896;&#20989;&#25968;)</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>&#26500;&#36896; <code>drop_view</code><br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-ranges-drop_view-base.html"><span class="t-lines"><span>base</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>&#36820;&#22238;&#24213;&#23618;&#65288;&#36866;&#37197;&#30340;&#65289;&#35270;&#22270;&#30340;&#21103;&#26412;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-ranges-drop_view-begin.html"><span class="t-lines"><span>begin</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>&#36820;&#22238;&#25351;&#21521;&#36215;&#22987;&#30340;&#36845;&#20195;&#22120;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-ranges-drop_view-end.html"><span class="t-lines"><span>end</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>&#36820;&#22238;&#25351;&#21521;&#26411;&#23614;&#30340;&#36845;&#20195;&#22120;&#25110;&#21736;&#20301;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-ranges-drop_view-size.html"><span class="t-lines"><span>size</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>&#36820;&#22238;&#20803;&#32032;&#25968;&#65292;&#21482;&#35201;&#24213;&#23618;&#65288;&#36866;&#37197;&#30340;&#65289;&#33539;&#22260;&#28385;&#36275; <a href="cpp-ranges-sized_range.html"><code>sized_range</code></a><br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
<tr>
<td colspan="2">
<h5><span class="mw-headline" id=".E7.BB.A7.E6.89.BF.E8.87.AA_std::ranges::view_interface">&#32487;&#25215;&#33258; <span class="t-lc">std::ranges::view_interface</span></span></h5>
</td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-ranges-view_interface-empty.html"><span class="t-lines"><span>empty</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>&#36820;&#22238;&#35270;&#22270;&#26159;&#21542;&#20026;&#31354;&#12290;&#33509;&#35270;&#22270;&#28385;&#36275; <a href="cpp-ranges-forward_range.html"><code>forward_range</code></a> &#21017;&#25552;&#20379;&#12290;<br />
<span class="t-mark">(<code>std::ranges::view_interface&lt;D&gt;</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-ranges-view_interface-operator_bool.html"><span class="t-lines"><span>operator bool</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>&#36820;&#22238;&#27966;&#29983;&#35270;&#22270;&#26159;&#21542;&#20026;&#38750;&#31354;&#12290;&#33509; <span class="t-lc">ranges::empty</span> &#21487;&#24212;&#29992;&#20110;&#23427;&#21017;&#25552;&#20379;&#12290;<br />
<span class="t-mark">(<code>std::ranges::view_interface&lt;D&gt;</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-ranges-view_interface-data.html"><span class="t-lines"><span>data</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>&#36820;&#22238;&#27966;&#29983;&#35270;&#22270;&#30340;&#25968;&#25454;&#30340;&#22320;&#22336;&#12290;&#33509;&#35270;&#22270;&#30340;&#36845;&#20195;&#22120;&#31867;&#22411;&#28385;&#36275; <a href="cpp-iterator-contiguous_iterator.html"><code>contiguous_iterator</code></a> &#21017;&#25552;&#20379;&#12290;<br />
<span class="t-mark">(<code>std::ranges::view_interface&lt;D&gt;</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-ranges-view_interface-front.html"><span class="t-lines"><span>front</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>&#36820;&#22238;&#27966;&#29983;&#35270;&#22270;&#20013;&#30340;&#39318;&#20803;&#32032;&#12290;&#33509;&#35270;&#22270;&#28385;&#36275; <a href="cpp-ranges-forward_range.html"><code>forward_range</code></a> &#21017;&#25552;&#20379;&#12290;<br />
<span class="t-mark">(<code>std::ranges::view_interface&lt;D&gt;</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-ranges-view_interface-back.html"><span class="t-lines"><span>back</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>&#36820;&#22238;&#27966;&#29983;&#35270;&#22270;&#20013;&#30340;&#26411;&#20803;&#32032;&#12290;&#33509;&#35270;&#22270;&#28385;&#36275; <a href="cpp-ranges-bidirectional_range.html"><code>bidirectional_range</code></a> &#19982; <a href="cpp-ranges-common_range.html"><code>common_range</code></a> &#21017;&#25552;&#20379;&#12290;<br />
<span class="t-mark">(<code>std::ranges::view_interface&lt;D&gt;</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
<tr class="t-dsc">
<td>
<div class="t-dsc-member-div">
<div><a href="cpp-ranges-view_interface-operator_at.html"><span class="t-lines"><span>operator[]</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>&#36820;&#22238;&#27966;&#29983;&#35270;&#22270;&#20013;&#30340;&#31532; n &#20010;&#20803;&#32032;&#12290;&#33509;&#35270;&#22270;&#28385;&#36275; <a href="cpp-ranges-random_access_range.html"><code>random_access_range</code></a> &#21017;&#25552;&#20379;&#12290;<br />
<span class="t-mark">(<code>std::ranges::view_interface&lt;D&gt;</code> &#30340;&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
</tr>
</table>
<h3><span class="mw-headline" id=".E6.8E.A8.E5.AF.BC.E6.8C.87.E5.BC.95"><a href="cpp-ranges-drop_view-deduction_guides.html">&#25512;&#23548;&#25351;&#24341;</a></span></h3>
<h3><span class="mw-headline" id=".E8.BE.85.E5.8A.A9.E6.A8.A1.E6.9D.BF">&#36741;&#21161;&#27169;&#26495;</span></h3>
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<td>
<div><span class="mw-geshi cpp source-cpp"><span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span><br /></span>
<p><span class="kw1">inline</span> <span class="kw4">constexpr</span> <span class="kw4">bool</span> enable_borrowed_range<span class="sy1">&lt;</span>std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">drop_view</span><span class="sy1">&lt;</span>T<span class="sy1">&gt;&gt;</span> <span class="sy1">=</span><br /></p>
&nbsp; &nbsp; std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">enable_borrowed_range</span><span class="sy1">&lt;</span>T<span class="sy1">&gt;</span><span class="sy4">;</span></div>
</td>
<td class="t-dcl-nopad"></td>
<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
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<td></td>
<td></td>
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<p><a href="cpp-ranges-borrowed_range.html"><tt>std::ranges::enable_borrowed_range</tt></a> &#30340;&#27492;&#29305;&#21270;&#20351; <code>drop_view</code> &#22312;&#24213;&#23618;&#35270;&#22270;&#28385;&#36275; <a href="cpp-ranges-borrowed_range.html"><code>borrowed_range</code></a> &#26102;&#28385;&#36275;&#23427;&#12290;</p>
<h3><span class="mw-headline" id=".E7.A4.BA.E4.BE.8B">&#31034;&#20363;</span></h3>
<div class="t-example">
<div class="t-example-live-link"></div>
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<div class="cpp source-cpp">
<pre class="de1"><span class="co2">#include &lt;ranges&gt;</span>
<span class="co2">#include &lt;iostream&gt;</span>
<span class="kw4">int</span> main<span class="br0">(</span><span class="br0">)</span>
<span class="br0">{</span>
<span class="kw4">const</span> <span class="kw4">auto</span> nums <span class="sy1">=</span> <span class="br0">{</span> <span class="nu0">1</span>, <span class="nu0">2</span>, <span class="nu0">3</span>, <span class="nu0">4</span>, <span class="nu0">5</span>, <span class="nu0">6</span>, <span class="nu0">7</span>, <span class="nu0">8</span>, <span class="nu0">9</span> <span class="br0">}</span><span class="sy4">;</span>
<span class="kw1">for</span> <span class="br0">(</span><span class="kw4">int</span> i <span class="sy4">:</span> nums <span class="sy3">|</span> std<span class="sy4">::</span><span class="me2">views</span><span class="sy4">::</span><span class="me2">drop</span><span class="br0">(</span><span class="nu0">2</span><span class="br0">)</span><span class="br0">)</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> i <span class="sy1">&lt;&lt;</span> <span class="st0">&#39; &#39;</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">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="kw1">for</span> <span class="br0">(</span><span class="kw4">int</span> i <span class="sy4">:</span> std<span class="sy4">::</span><span class="me2">views</span><span class="sy4">::</span><span class="me2">iota</span><span class="br0">(</span><span class="nu0">1</span>, <span class="nu0">10</span><span class="br0">)</span> <span class="sy3">|</span> std<span class="sy4">::</span><span class="me2">views</span><span class="sy4">::</span><span class="me2">drop</span><span class="br0">(</span><span class="nu0">2</span><span class="br0">)</span><span class="br0">)</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> i <span class="sy1">&lt;&lt;</span> <span class="st0">&#39; &#39;</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">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="kw1">for</span> <span class="br0">(</span><span class="kw4">int</span> i <span class="sy4">:</span> std<span class="sy4">::</span><span class="me2">ranges</span><span class="sy4">::</span><span class="me2">drop_view</span><span class="br0">{</span>nums, <span class="nu0">2</span><span class="br0">}</span><span class="br0">)</span>
<a href="cpp-io-cout.html"><span class="kw1758">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> i <span class="sy1">&lt;&lt;</span> <span class="st0">&#39; &#39;</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">&#39;<span class="es1">\n</span>&#39;</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
</div>
<p>&#36755;&#20986;&#65306;</p>
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<div class="text source-text">
<pre class="de1">3 4 5 6 7 8 9
3 4 5 6 7 8 9
3 4 5 6 7 8 9</pre></div>
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<h3><span class="mw-headline" id=".E7.BC.BA.E9.99.B7.E6.8A.A5.E5.91.8A">&#32570;&#38519;&#25253;&#21578;</span></h3>
<p>&#19979;&#21015;&#26356;&#25913;&#34892;&#20026;&#30340;&#32570;&#38519;&#25253;&#21578;&#36861;&#28335;&#22320;&#24212;&#29992;&#20110;&#20197;&#21069;&#20986;&#29256;&#30340; C++ &#26631;&#20934;&#12290;</p>
<table class="dsctable" style="font-size:0.8em">
<tr>
<th>DR</th>
<th>&#24212;&#29992;&#20110;</th>
<th>&#20986;&#29256;&#26102;&#30340;&#34892;&#20026;</th>
<th>&#27491;&#30830;&#34892;&#20026;</th>
</tr>
<tr>
<td><a rel="nofollow" class="external text" href="https://cplusplus.github.io/LWG/issue3494">LWG 3494</a></td>
<td>C++20</td>
<td><code>drop_view</code> &#20915;&#19981;&#26159; <code>borrowed_range</code></td>
<td>&#33509;&#24213;&#23618;&#33539;&#22260;&#26159; <code>borrowed_range</code> &#21017;&#23427;&#26159;</td>
</tr>
<tr>
<td><a rel="nofollow" class="external text" href="https://cplusplus.github.io/LWG/issue3407">LWG 3407</a></td>
<td>C++20</td>
<td><code>views::drop</code> &#26377;&#26102;&#26080;&#27861;&#26500;&#36896;&#20855;&#22823;&#23567;&#38543;&#26426;&#35775;&#38382;&#33539;&#22260;</td>
<td>&#35843;&#25972;&#26500;&#36896;&#20351;&#20043;&#22987;&#32456;&#21512;&#27861;</td>
</tr>
</table>
<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
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<td>
<div class="t-dsc-member-div">
<div><a href="cpp-ranges-drop_while_view.html"><span class="t-lines"><span>ranges::drop_while_view</span><span>views::drop_while</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>&#30001;&#21478;&#19968; <a href="cpp-ranges-view.html"><code>view</code></a> &#36339;&#36807;&#20803;&#32032;&#30340;&#36215;&#22987;&#24207;&#21015;&#65292;&#30452;&#33267;&#39318;&#20010;&#35859;&#35789;&#36820;&#22238; <code>false</code> &#30340;&#20803;&#32032;&#32452;&#25104;&#30340; <a href="cpp-ranges-view.html"><code>view</code></a><br />
<span class="t-mark">(&#31867;&#27169;&#26495;)</span> <span class="t-mark">(&#33539;&#22260;&#36866;&#37197;&#22120;&#23545;&#35937;)</span></td>
</tr>
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