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<h1 id="firstHeading" class="firstHeading"><span style="font-size:0.7em; line-height:130%">&#26631;&#20934;&#24211;&#22836;&#25991;&#20214;</span> &lt;bitset&gt;</h1>
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<p>&#27492;&#22836;&#25991;&#20214;&#26159;<a href="cpp-utility.html">&#36890;&#29992;&#24037;&#20855;</a>&#24211;&#30340;&#19968;&#37096;&#20998;&#12290;</p>
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<h3><span class="mw-headline" id=".E5.8C.85.E5.90.AB">&#21253;&#21547;</span></h3>
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<div><a href="cpp-header-string.html"><span class="t-lines"><span>&lt;string&gt;</span></span></a></div>
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<td><span class="t-lc"><a href="cpp-string-basic_string.html">std::basic_string</a></span> &#31867;&#27169;&#26495;</td>
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<div><a href="cpp-header-iosfwd.html"><span class="t-lines"><span>&lt;iosfwd&gt;</span></span></a></div>
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<td>&#36755;&#20837;/&#36755;&#20986;&#24211;&#20013;&#25152;&#26377;&#31867;&#30340;&#21069;&#32622;&#22768;&#26126;</td>
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<div><a href="cpp-utility-bitset.html"><span class="t-lines"><span>bitset</span></span></a></div>
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<td>&#23454;&#29616;&#24120;&#37327;&#38271;&#24230;&#30340;&#20301;&#25968;&#32452;<br />
<span class="t-mark">(&#31867;&#27169;&#26495;)</span></td>
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<div><a href="cpp-utility-bitset-hash.html"><span class="t-lines"><span>std::hash<span class="t-dsc-small">&lt;std::bitset&gt;</span></span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
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<td><span class="t-lc"><a href="cpp-utility-bitset.html">std::bitset</a></span> &#30340;&#25955;&#21015;&#25903;&#25345;<br />
<span class="t-mark">(&#31867;&#27169;&#26495;&#29305;&#21270;)</span></td>
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<h5><span class="mw-headline" id=".E5.89.8D.E7.BD.AE.E5.A3.B0.E6.98.8E">&#21069;&#32622;&#22768;&#26126;</span></h5>
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<div>&#23450;&#20041;&#20110;&#22836;&#25991;&#20214; <code><a href="cpp-header-functional.html">&lt;functional&gt;</a></code></div>
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<div><a href="cpp-utility-hash.html"><span class="t-lines"><span>hash</span></span></a></div>
<div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(C++11)</span></span></span></div>
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<td>&#25955;&#21015;&#20989;&#25968;&#23545;&#35937;<br />
<span class="t-mark">(&#31867;&#27169;&#26495;)</span></td>
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<h3><span class="mw-headline" id=".E5.87.BD.E6.95.B0">&#20989;&#25968;</span></h3>
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<div><a href="cpp-utility-bitset-operator_logic2.html"><span class="t-lines"><span>operator&amp;</span><span>operator|</span><span>operator^</span></span></a></div>
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<td>&#22312; bitset &#19978;&#25191;&#34892;&#20108;&#20803;&#36923;&#36753;&#25805;&#20316;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
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<div><a href="cpp-utility-bitset-operator_ltltgtgt2.html"><span class="t-lines"><span>operator&lt;&lt;</span><span>operator&gt;&gt;</span></span></a></div>
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<td>&#25191;&#34892; bitset &#30340;&#27969;&#36755;&#20837;&#21644;&#36755;&#20986;<br />
<span class="t-mark">(&#20989;&#25968;)</span></td>
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<h3><span class="mw-headline" id=".E6.A6.82.E8.A6.81">&#27010;&#35201;</span></h3>
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<div class="cpp source-cpp">
<pre class="de1"><span class="co2">#include &lt;string&gt;</span>
<span class="co2">#include &lt;iosfwd&gt; // &#20026; istream &#12289; ostream</span>
<span class="kw1">namespace</span> std <span class="br0">{</span>
<span class="kw1">template</span><span class="sy1">&lt;</span>size_t N<span class="sy1">&gt;</span> <span class="kw1">class</span> bitset<span class="sy4">;</span>
<span class="co1">// bitset &#36816;&#31639;&#31526;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span>size_t N<span class="sy1">&gt;</span>
bitset<span class="sy1">&lt;</span>N<span class="sy1">&gt;</span> operator<span class="sy3">&amp;</span><span class="br0">(</span><span class="kw4">const</span> bitset<span class="sy1">&lt;</span>N<span class="sy1">&gt;</span><span class="sy3">&amp;</span>, <span class="kw4">const</span> bitset<span class="sy1">&lt;</span>N<span class="sy1">&gt;</span><span class="sy3">&amp;</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span>size_t N<span class="sy1">&gt;</span>
bitset<span class="sy1">&lt;</span>N<span class="sy1">&gt;</span> operator<span class="sy3">|</span><span class="br0">(</span><span class="kw4">const</span> bitset<span class="sy1">&lt;</span>N<span class="sy1">&gt;</span><span class="sy3">&amp;</span>, <span class="kw4">const</span> bitset<span class="sy1">&lt;</span>N<span class="sy1">&gt;</span><span class="sy3">&amp;</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span>size_t N<span class="sy1">&gt;</span>
bitset<span class="sy1">&lt;</span>N<span class="sy1">&gt;</span> operator<span class="sy3">^</span><span class="br0">(</span><span class="kw4">const</span> bitset<span class="sy1">&lt;</span>N<span class="sy1">&gt;</span><span class="sy3">&amp;</span>, <span class="kw4">const</span> bitset<span class="sy1">&lt;</span>N<span class="sy1">&gt;</span><span class="sy3">&amp;</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits, size_t N<span class="sy1">&gt;</span>
basic_istream<span class="sy1">&lt;</span>CharT, Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span>
operator<span class="sy1">&gt;&gt;</span><span class="br0">(</span>basic_istream<span class="sy1">&lt;</span>CharT, Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> is, bitset<span class="sy1">&lt;</span>N<span class="sy1">&gt;</span><span class="sy3">&amp;</span> x<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits, size_t N<span class="sy1">&gt;</span>
basic_ostream<span class="sy1">&lt;</span>CharT, Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span>
operator<span class="sy1">&lt;&lt;</span><span class="br0">(</span>basic_ostream<span class="sy1">&lt;</span>CharT, Traits<span class="sy1">&gt;</span><span class="sy3">&amp;</span> os, <span class="kw4">const</span> bitset<span class="sy1">&lt;</span>N<span class="sy1">&gt;</span><span class="sy3">&amp;</span> x<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
</div>
<h4><span class="mw-headline" id=".E7.B1.BB.E6.A8.A1.E6.9D.BF_std::bitset">&#31867;&#27169;&#26495; <span class="t-lc"><a href="cpp-utility-bitset.html">std::bitset</a></span></span></h4>
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<div class="cpp source-cpp">
<pre class="de1"><span class="kw1">namespace</span> std <span class="br0">{</span>
<span class="kw1">template</span><span class="sy1">&lt;</span>size_t N<span class="sy1">&gt;</span> <span class="kw1">class</span> bitset <span class="br0">{</span>
<span class="kw1">public</span><span class="sy4">:</span>
<span class="co1">// &#20301;&#24341;&#29992;</span>
<span class="kw1">class</span> reference <span class="br0">{</span>
<span class="kw1">friend</span> <span class="kw1">class</span> bitset<span class="sy4">;</span>
reference<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">public</span><span class="sy4">:</span>
reference<span class="br0">(</span><span class="kw4">const</span> reference<span class="sy3">&amp;</span><span class="br0">)</span> <span class="sy1">=</span> <span class="kw1">default</span><span class="sy4">;</span>
~reference<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
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 class="co1">// &#38024;&#23545; b[i] = x;</span>
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><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span> <span class="co1">// &#38024;&#23545; b[i] = b[j];</span>
<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 class="co1">// &#32763;&#36716;&#20301;</span>
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 class="co1">// &#38024;&#23545; x = b[i];</span>
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 class="co1">// &#38024;&#23545; b[i].flip();</span>
<span class="br0">}</span><span class="sy4">;</span>
<span class="co1">// &#26500;&#36896;&#20989;&#25968;</span>
<span class="kw4">constexpr</span> bitset<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw4">constexpr</span> bitset<span class="br0">(</span><span class="kw4">unsigned</span> <span class="kw4">long</span> <span class="kw4">long</span> val<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> CharT, <span class="kw1">class</span> Traits, <span class="kw1">class</span> Allocator<span class="sy1">&gt;</span>
<span class="kw1">explicit</span> bitset<span class="br0">(</span>
<span class="kw4">const</span> basic_string<span class="sy1">&lt;</span>CharT, Traits, Allocator<span class="sy1">&gt;</span><span class="sy3">&amp;</span> str,
<span class="kw1">typename</span> basic_string<span class="sy1">&lt;</span>CharT, Traits, Allocator<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">size_type</span> pos <span class="sy1">=</span> <span class="nu0">0</span>,
<span class="kw1">typename</span> basic_string<span class="sy1">&lt;</span>CharT, Traits, Allocator<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">size_type</span> n
<span class="sy1">=</span> basic_string<span class="sy1">&lt;</span>CharT, Traits, Allocator<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">npos</span>,
CharT zero <span class="sy1">=</span> CharT<span class="br0">(</span><span class="st0">&#39;0&#39;</span><span class="br0">)</span>,
CharT one <span class="sy1">=</span> CharT<span class="br0">(</span><span class="st0">&#39;1&#39;</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> CharT<span class="sy1">&gt;</span>
<span class="kw1">explicit</span> bitset<span class="br0">(</span>
<span class="kw4">const</span> charT<span class="sy2">*</span> str,
<span class="kw1">typename</span> basic_string<span class="sy1">&lt;</span>CharT<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">size_type</span> n <span class="sy1">=</span> basic_string<span class="sy1">&lt;</span>CharT<span class="sy1">&gt;</span><span class="sy4">::</span><span class="me2">npos</span>,
CharT zero <span class="sy1">=</span> CharT<span class="br0">(</span><span class="st0">&#39;0&#39;</span><span class="br0">)</span>,
CharT one <span class="sy1">=</span> CharT<span class="br0">(</span><span class="st0">&#39;1&#39;</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="co1">// bitset &#25805;&#20316;</span>
bitset<span class="sy3">&amp;</span> operator<span class="sy3">&amp;</span><span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> bitset<span class="sy3">&amp;</span> rhs<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
bitset<span class="sy3">&amp;</span> operator<span class="sy3">|</span><span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> bitset<span class="sy3">&amp;</span> rhs<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
bitset<span class="sy3">&amp;</span> operator<span class="sy3">^</span><span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> bitset<span class="sy3">&amp;</span> rhs<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
bitset<span class="sy3">&amp;</span> operator<span class="sy1">&lt;&lt;=</span><span class="br0">(</span>size_t pos<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
bitset<span class="sy3">&amp;</span> operator<span class="sy1">&gt;&gt;=</span><span class="br0">(</span>size_t pos<span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
bitset<span class="sy3">&amp;</span> set<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
bitset<span class="sy3">&amp;</span> set<span class="br0">(</span>size_t pos, <span class="kw4">bool</span> val <span class="sy1">=</span> <span class="kw2">true</span><span class="br0">)</span><span class="sy4">;</span>
bitset<span class="sy3">&amp;</span> reset<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
bitset<span class="sy3">&amp;</span> reset<span class="br0">(</span>size_t pos<span class="br0">)</span><span class="sy4">;</span>
bitset operator~<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
bitset<span class="sy3">&amp;</span> flip<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
bitset<span class="sy3">&amp;</span> flip<span class="br0">(</span>size_t pos<span class="br0">)</span><span class="sy4">;</span>
<span class="co1">// &#20803;&#32032;&#35775;&#38382;</span>
<span class="kw4">constexpr</span> <span class="kw4">bool</span> operator<span class="br0">[</span><span class="br0">]</span><span class="br0">(</span>size_t pos<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span> <span class="co1">// &#38024;&#23545; b[i];</span>
reference operator<span class="br0">[</span><span class="br0">]</span><span class="br0">(</span>size_t pos<span class="br0">)</span><span class="sy4">;</span> <span class="co1">// &#38024;&#23545; b[i];</span>
<span class="kw4">unsigned</span> <span class="kw4">long</span> to_ulong<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
<span class="kw4">unsigned</span> <span class="kw4">long</span> <span class="kw4">long</span> to_ullong<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> CharT <span class="sy1">=</span> <span class="kw4">char</span>,
<span class="kw1">class</span> Traits <span class="sy1">=</span> char_Traits<span class="sy1">&lt;</span>CharT<span class="sy1">&gt;</span>,
<span class="kw1">class</span> Allocator <span class="sy1">=</span> allocator<span class="sy1">&lt;</span>CharT<span class="sy1">&gt;&gt;</span>
basic_string<span class="sy1">&lt;</span>CharT, Traits, Allocator<span class="sy1">&gt;</span>
to_string<span class="br0">(</span>CharT zero <span class="sy1">=</span> CharT<span class="br0">(</span><span class="st0">&#39;0&#39;</span><span class="br0">)</span>, CharT one <span class="sy1">=</span> CharT<span class="br0">(</span><span class="st0">&#39;1&#39;</span><span class="br0">)</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
size_t count<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw4">constexpr</span> size_t size<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span><span class="kw4">const</span> bitset<span class="sy3">&amp;</span> rhs<span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw4">bool</span> test<span class="br0">(</span>size_t pos<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
<span class="kw4">bool</span> all<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw4">bool</span> any<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="kw4">bool</span> none<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
bitset operator<span class="sy1">&lt;&lt;</span><span class="br0">(</span>size_t pos<span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
bitset operator<span class="sy1">&gt;&gt;</span><span class="br0">(</span>size_t pos<span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
<span class="br0">}</span><span class="sy4">;</span>
<span class="co1">// &#25955;&#21015;&#25903;&#25345;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span><span class="kw1">class</span> T<span class="sy1">&gt;</span> <span class="kw1">struct</span> hash<span class="sy4">;</span>
<span class="kw1">template</span><span class="sy1">&lt;</span>size_t N<span class="sy1">&gt;</span> <span class="kw1">struct</span> hash<span class="sy1">&lt;</span>bitset<span class="sy1">&lt;</span>N<span class="sy1">&gt;&gt;</span><span class="sy4">;</span>
<span class="br0">}</span></pre></div>
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