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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::chrono::</span>year_month_day</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-chrono.html">chrono</a></span></div>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-chrono.html">&lt;chrono&gt;</a></code></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">class</span> year_month_day<span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx20">(C++20 &#36215;)</span></td>
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<p>&#31867; <code>year_month_day</code> &#34920;&#31034;&#20026;&#29305;&#23450;&#30340;&#24180;&#26376;&#26085;&#12290;&#23427;&#26159;&#22522;&#20110;&#22495;&#30340;&#26102;&#38388;&#28857;&#65292;&#20854;&#35299;&#26512;&#20026; <span class="t-lc">std::chrono::days</span> &#12290;&#23427;&#30452;&#25509;&#25903;&#25345;&#38754;&#21521; <span class="t-lc">std::chrono::years</span> &#19982; <span class="t-lc">std::chrono::months</span> &#30340;&#31639;&#26415;&#12290;&#19982; <span class="t-lc">std::chrono::sys_days</span> &#38388;&#30340;&#21452;&#21521;&#38544;&#24335;&#36716;&#25442;&#31561;&#25928;&#22320;&#20801;&#35768;&#36827;&#34892;&#38754;&#21521; <span class="t-lc">std::chrono::days</span> &#30340;&#31639;&#26415;&#12290;</p>
<p><code>year_month_day</code> &#26159;<a href="cpp-named_req-TriviallyCopyable.html"><span style="font-style:italic">&#21487;&#24179;&#20961;&#22797;&#21046;</span> <span style="font-family: Georgia, &#39;DejaVu Serif&#39;, serif; font-style:italic">(TriviallyCopyable)</span></a> &#30340;<a href="cpp-named_req-StandardLayoutType.html"><span style="font-style:italic">&#26631;&#20934;&#24067;&#23616;&#31867;&#22411;</span> <span style="font-family: Georgia, &#39;DejaVu Serif&#39;, serif; font-style:italic">(StandardLayoutType)</span></a> &#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>
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<div><a href="cpp-chrono-year_month_day-year_month_day.html"><span class="t-lines"><span>(&#26500;&#36896;&#20989;&#25968;)</span></span></a></div>
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<td>&#26500;&#36896; <code>year_month_day</code><br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><a href="cpp-chrono-year_month_day-operator_arith.html"><span class="t-lines"><span>operator+=</span><span>operator-=</span></span></a></div>
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<td>&#20197;&#19968;&#23450;&#37327;&#30340; <code>months</code> &#25110; <code>years</code> &#20026;&#31243;&#24230;&#20462;&#25913;&#26102;&#38388;&#28857;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><a href="cpp-chrono-year_month_day-accessors.html"><span class="t-lines"><span>year</span><span>month</span><span>day</span></span></a></div>
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<td>&#35775;&#38382;&#27492;&#23545;&#35937;&#20013;&#23384;&#20648;&#30340; <code>year</code> &#12289; <code>month</code> &#21644; <code>day</code><br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><a href="cpp-chrono-year_month_day-operator_days.html"><span class="t-lines"><span>operator sys_days</span><span>operator local_days</span></span></a></div>
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<td>&#36716;&#25442;&#21040; <span class="t-lc"><a href="cpp-chrono-time_point.html">std::chrono::time_point</a></span><br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><a href="cpp-chrono-year_month_day-ok.html"><span class="t-lines"><span>ok</span></span></a></div>
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<td>&#26816;&#26597; <code>year_month_day</code> &#26159;&#21542;&#34920;&#31034;&#21512;&#27861;&#30340;&#26085;&#26399;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<h3><span class="mw-headline" id=".E9.9D.9E.E6.88.90.E5.91.98.E5.87.BD.E6.95.B0">&#38750;&#25104;&#21592;&#20989;&#25968;</span></h3>
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<div><a href="cpp-chrono-year_month_day-operator_cmp.html"><span class="t-lines"><span>operator==</span><span>operator&lt;=&gt;</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>&#27604;&#36739;&#20108;&#20010; <code>year_month_day</code> &#20540;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
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<div><a href="cpp-chrono-year_month_day-operator_arith_2.html"><span class="t-lines"><span>operator+</span><span>operator-</span></span></a></div>
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<td>&#23558; <code>year_month_day</code> &#19982;&#19968;&#23450;&#37327;&#30340;&#24180;&#25968;&#25110;&#26376;&#25968;&#30456;&#21152;&#25110;&#30456;&#20943;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
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<div><a href="cpp-chrono-year_month_day-operator_ltlt.html"><span class="t-lines"><span>operator&lt;&lt;</span></span></a></div>
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<td>&#36755;&#20986; <code>year_month_day</code> &#21040;&#27969;&#20013;<br />
<span class="t-mark">(&#20989;&#25968;&#27169;&#26495;)</span></td>
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<div><a href="cpp-chrono-year_month_day-from_stream.html"><span class="t-lines"><span>from_stream</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>&#25353;&#29031;&#32473;&#23450;&#30340;&#26684;&#24335;&#20174;&#27969;&#20998;&#26512; <code>year_month_day</code><br />
<span class="t-mark">(&#20989;&#25968;&#27169;&#26495;)</span></td>
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<h3><span class="mw-headline" id=".E8.BE.85.E5.8A.A9.E7.B1.BB">&#36741;&#21161;&#31867;</span></h3>
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<div><a href="cpp-chrono-year_month_day-formatter.html"><span class="t-lines"><span>std::formatter<span class="t-dsc-small">&lt;std::chrono::year_month_day&gt;</span></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><span class="t-lc">std::formatter</span> &#30340;&#29305;&#21270;&#65292;&#25353;&#29031;&#25552;&#20379;&#30340;&#26684;&#24335;&#26684;&#24335;&#21270; <code>year_month_day</code><br />
<span class="t-mark">(&#31867;&#27169;&#26495;&#29305;&#21270;)</span></td>
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