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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">std::bitset&lt;N&gt;::</span>reference</h1>
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<div id="contentSub"><span class="subpages">&lt; <a href="cpp.html">cpp</a>&lrm; | <a href="cpp-utility.html">utility</a>&lrm; | <a href="cpp-utility-bitset.html">bitset</a></span></div>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw1">class</span> reference<span class="sy4">;</span></span></div>
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<p><span class="t-lc"><a href="cpp-utility-bitset.html">std::bitset</a></span> &#31867;&#21253;&#21547; <span class="t-lc"><strong class="selflink">std::bitset::reference</strong></span> &#20316;&#20026;&#21487;&#20844;&#24320;&#35775;&#38382;&#30340;&#23884;&#22871;&#31867;&#12290;&#27492;&#31867;&#29992;&#20316;&#20801;&#35768;&#29992;&#25143;&#19982; bitset &#30340;&#21333;&#20010;&#20301;&#20132;&#20114;&#30340;&#20195;&#29702;&#23545;&#35937;&#65292;&#22240;&#20026;&#26631;&#20934; C++ &#31867;&#22411;&#65288;&#22914;&#24341;&#29992;&#21644;&#25351;&#38024;&#65289;&#27809;&#26377;&#20869;&#24314;&#25351;&#23450;&#21333;&#20010;&#20301;&#30340;&#36275;&#22815;&#31934;&#24230;&#12290;</p>
<p><span class="t-lc"><strong class="selflink">std::bitset::reference</strong></span> &#30340;&#22522;&#26412;&#29992;&#36884;&#26159;&#25552;&#20379;&#33021;&#20174; <a href="cpp-utility-bitset-operator_at.html"><code>operator[]</code></a> &#36820;&#22238;&#30340;&#24038;&#20540;&#12290;</p>
<p>&#20219;&#20309;&#36890;&#36807; <span class="t-lc"><strong class="selflink">std::bitset::reference</strong></span> &#23545; bitset &#30340;&#35835;&#25110;&#20889;&#28508;&#22312;&#22320;&#35835;&#25110;&#20889;&#25972;&#20010;&#24213;&#23618; bitset &#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><span class="t-lines"><span>(&#26500;&#36896;&#20989;&#25968;)</span></span></div>
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<td>&#26500;&#36896;&#24341;&#29992;&#12290;&#21482;&#23545; <span class="t-lc"><a href="cpp-utility-bitset.html">std::bitset</a></span> &#33258;&#36523;&#21487;&#35775;&#38382;<br />
<span class="t-mark">(&#31169;&#26377;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div class="t-dsc-member-div t-dsc-member-nobold-div">
<div><strong class="selflink"><span class="t-lines"><span>(&#26512;&#26500;&#20989;&#25968;)</span></span></strong></div>
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<td>&#38144;&#27585;&#24341;&#29992;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><span class="t-lines"><span>operator=</span></span></div>
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<td>&#36171;&#20540; <span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="kw4">bool</span></span></span> &#32473;&#34987;&#24341;&#29992;&#20301;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div class="t-dsc-member-div">
<div><strong class="selflink"><span class="t-lines"><span>operator bool</span></span></strong></div>
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<td>&#36820;&#22238;&#34987;&#24341;&#29992;&#20301;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><span class="t-lines"><span>operator~</span></span></div>
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<td>&#36820;&#22238;&#32763;&#36716;&#30340;&#34987;&#24341;&#29992;&#20301;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div><span class="t-lines"><span>flip</span></span></div>
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<td>&#32763;&#36716;&#34987;&#24341;&#29992;&#20301;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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<div class="t-member">
<h2><span class="mw-headline" id="std::bitset.3CN.3E::reference::.7Ereference"><span style="font-size:0.7em; line-height:130%">std::bitset&lt;N&gt;::reference::</span>~reference</span></h2>
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<div><span class="mw-geshi cpp source-cpp">~reference<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span></span></div>
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<p>&#38144;&#27585;&#24341;&#29992;&#12290;</p>
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<div class="t-member">
<h2><span class="mw-headline" id="std::bitset.3CN.3E::reference::operator.3D"><span style="font-size:0.7em; line-height:130%">std::bitset&lt;N&gt;::reference::</span>operator=</span></h2>
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<td rowspan="142">(1)</td>
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<div><span class="mw-geshi cpp source-cpp">reference<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span> <span class="kw4">bool</span> x <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td class="t-dcl-nopad"></td>
<td><span class="t-mark-rev t-until-cxx11">(C++11 &#21069;)</span></td>
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<div><span class="mw-geshi cpp source-cpp">reference<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span> <span class="kw4">bool</span> x <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td class="t-dcl-nopad"></td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<tbody></tbody>
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<td rowspan="142">(2)</td>
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<div><span class="mw-geshi cpp source-cpp">reference<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span> <span class="kw4">const</span> reference<span class="sy3">&amp;</span> x <span class="br0">)</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-until-cxx11">(C++11 &#21069;)</span></td>
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<div><span class="mw-geshi cpp source-cpp">reference<span class="sy3">&amp;</span> operator<span class="sy1">=</span><span class="br0">(</span> <span class="kw4">const</span> reference<span class="sy3">&amp;</span> x <span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<p>&#36171;&#20540;&#32473;&#34987;&#24341;&#29992;&#20301;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0">&#21442;&#25968;</span></h3>
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<td>x</td>
<td>-</td>
<td>&#35201;&#36171;&#20540;&#30340;&#20540;</td>
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<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC">&#36820;&#22238;&#20540;</span></h3>
<p><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span>this</span></span></p>
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<div class="t-member">
<h2><span class="mw-headline" id="std::bitset.3CN.3E::reference::operator_bool"><span style="font-size:0.7em; line-height:130%">std::bitset&lt;N&gt;::reference::</span>operator bool</span></h2>
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<div><span class="mw-geshi cpp source-cpp">operator <span class="kw4">bool</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 class="t-dcl-nopad"></td>
<td><span class="t-mark-rev t-until-cxx11">(C++11 &#21069;)</span></td>
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<div><span class="mw-geshi cpp source-cpp">operator <span class="kw4">bool</span><span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<p>&#36820;&#22238;&#34987;&#24341;&#29992;&#20301;&#30340;&#20540;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0_2">&#21442;&#25968;</span></h3>
<p>&#65288;&#26080;&#65289;</p>
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC_2">&#36820;&#22238;&#20540;</span></h3>
<p>&#34987;&#24341;&#29992;&#20301;&#12290;</p>
</div>
<div class="t-member">
<h2><span class="mw-headline" id="std::bitset.3CN.3E::reference::operator.7E"><span style="font-size:0.7em; line-height:130%">std::bitset&lt;N&gt;::reference::</span>operator~</span></h2>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">bool</span> operator~<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-until-cxx11">(C++11 &#21069;)</span></td>
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<div><span class="mw-geshi cpp source-cpp"><span class="kw4">bool</span> operator~<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<p>&#36820;&#22238;&#34987;&#24341;&#29992;&#20301;&#30340;&#32763;&#36716;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0_3">&#21442;&#25968;</span></h3>
<p>&#65288;&#26080;&#65289;</p>
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC_3">&#36820;&#22238;&#20540;</span></h3>
<p>&#34987;&#24341;&#29992;&#20301;&#30340;&#32763;&#36716;&#12290;</p>
</div>
<div class="t-member">
<h2><span class="mw-headline" id="std::bitset.3CN.3E::reference::flip"><span style="font-size:0.7em; line-height:130%">std::bitset&lt;N&gt;::reference::</span>flip</span></h2>
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<div><span class="mw-geshi cpp source-cpp">reference<span class="sy3">&amp;</span> flip<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span></span></div>
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<td><span class="t-mark-rev t-until-cxx11">(C++11 &#21069;)</span></td>
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<div><span class="mw-geshi cpp source-cpp">reference<span class="sy3">&amp;</span> flip<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span></span></div>
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<td class="t-dcl-nopad"></td>
<td><span class="t-mark-rev t-since-cxx11">(C++11 &#36215;)</span></td>
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<tbody>
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<p>&#32763;&#36716;&#34987;&#24341;&#29992;&#20301;&#12290;</p>
<h3><span class="mw-headline" id=".E5.8F.82.E6.95.B0_4">&#21442;&#25968;</span></h3>
<p>&#65288;&#26080;&#65289;</p>
<h3><span class="mw-headline" id=".E8.BF.94.E5.9B.9E.E5.80.BC_4">&#36820;&#22238;&#20540;</span></h3>
<p><span class="t-c"><span class="mw-geshi cpp source-cpp"><span class="sy2">*</span>this</span></span></p>
</div>
<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>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="cpp source-cpp">
<pre class="de1"><span class="co2">#include &lt;bitset&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>
<a href="cpp-utility-bitset.html"><span class="kw1027">std::<span class="me2">bitset</span></span></a><span class="sy1">&lt;</span><span class="nu0">4</span><span class="sy1">&gt;</span> bs<span class="br0">(</span> <span class="nu6">0b1110</span> <span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-utility-bitset.html"><span class="kw1027">std::<span class="me2">bitset</span></span></a><span class="sy1">&lt;</span><span class="nu0">4</span><span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">reference</span> ref <span class="sy1">=</span> bs<span class="br0">[</span><span class="nu0">2</span><span class="br0">]</span><span class="sy4">;</span> <span class="co1">// auto ref = bs[2];</span>
<span class="kw4">auto</span> info <span class="sy1">=</span> <span class="br0">[</span><span class="sy3">&amp;</span><span class="br0">]</span><span class="br0">(</span><span class="kw4">int</span> n<span class="br0">)</span> <span class="br0">{</span>
<a href="cpp-io-cout.html"><span class="kw1757">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> n <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;) bs: &quot;</span> <span class="sy1">&lt;&lt;</span> bs <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;; ref bit: &quot;</span> <span class="sy1">&lt;&lt;</span> ref <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><span class="sy4">;</span>
info<span class="br0">(</span><span class="nu0">1</span><span class="br0">)</span><span class="sy4">;</span>
ref <span class="sy1">=</span> <span class="kw2">false</span><span class="sy4">;</span>
info<span class="br0">(</span><span class="nu0">2</span><span class="br0">)</span><span class="sy4">;</span>
ref <span class="sy1">=</span> <span class="kw2">true</span><span class="sy4">;</span>
info<span class="br0">(</span><span class="nu0">3</span><span class="br0">)</span><span class="sy4">;</span>
ref.<span class="me1">flip</span><span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
info<span class="br0">(</span><span class="nu0">4</span><span class="br0">)</span><span class="sy4">;</span>
ref <span class="sy1">=</span> bs<span class="br0">[</span><span class="nu0">1</span><span class="br0">]</span><span class="sy4">;</span> <span class="co1">// operator=( const reference&amp; x )</span>
info<span class="br0">(</span><span class="nu0">5</span><span class="br0">)</span><span class="sy4">;</span>
<a href="cpp-io-cout.html"><span class="kw1757">std::<span class="me2">cout</span></span></a> <span class="sy1">&lt;&lt;</span> <span class="st0">&quot;6) ~ref bit: &quot;</span> <span class="sy1">&lt;&lt;</span> ~ref <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>
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<p>&#36755;&#20986;&#65306;</p>
<div dir="ltr" class="mw-geshi" style="text-align: left;">
<div class="text source-text">
<pre class="de1">1) bs: 1110; ref bit: 1
2) bs: 1010; ref bit: 0
3) bs: 1110; ref bit: 1
4) bs: 1010; ref bit: 0
5) bs: 1110; ref bit: 1
6) ~ref bit: 0</pre></div>
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<h3><span class="mw-headline" id=".E5.8F.82.E9.98.85">&#21442;&#38405;</span></h3>
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<div><a href="cpp-utility-bitset-operator_at.html"><span class="t-lines"><span>operator[]</span></span></a></div>
</div>
</td>
<td>&#35775;&#38382;&#25351;&#23450;&#30340;&#20301;<br />
<span class="t-mark">(&#20844;&#24320;&#25104;&#21592;&#20989;&#25968;)</span></td>
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