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<td colspan="2"> <table id="toc" class="toc"><tr><td><div id="toctitle"><h2>Contents</h2></div>
<ul>
<li class="toclevel-1"><a href="unordered_set.html#Includes"><span class="tocnumber">1</span> <span class="toctext">Includes</span></a></li>
<li class="toclevel-1"><a href="unordered_set.html#Classes"><span class="tocnumber">2</span> <span class="toctext">Classes</span></a></li>
<li class="toclevel-1"><a href="unordered_set.html#Functions"><span class="tocnumber">3</span> <span class="toctext">Functions</span></a></li>
<li class="toclevel-1 tocsection-1"><a href="unordered_set.html#Synopsis"><span class="tocnumber">4</span> <span class="toctext">Synopsis</span></a>
<ul>
<li class="toclevel-2 tocsection-2"><a href="unordered_set.html#Class_std::unordered_set"><span class="tocnumber">4.1</span> <span class="toctext">Class <span>std::unordered_set</span></span></a></li>
<li class="toclevel-2 tocsection-3"><a href="unordered_set.html#Class_std::unordered_multiset"><span class="tocnumber">4.2</span> <span class="toctext">Class <span>std::unordered_multiset</span></span></a></li>
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<h3> <span class="mw-headline" id="Includes">Includes</span></h3>
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<tr class="t-dsc">
<td colspan="2"> <a href="initializer_list.html" title="cpp/header/initializer list"><tt><initializer_list></tt></a> <span class="t-mark-rev t-since-cxx11">(C++11)</span>
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<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../container/unordered_set.html" title="cpp/container/unordered set"> <span class="t-lines"><span>unordered_set</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(since C++11)</span></span></span></div></div>
</td>
<td> collection of unique keys, hashed by keys <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/container/dsc_unordered_set&action=edit">[edit]</a></span>
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<td> <div class="t-dsc-member-div"><div><a href="../container/unordered_multiset.html" title="cpp/container/unordered multiset"> <span class="t-lines"><span>unordered_multiset</span></span></a></div><div><span class="t-lines"><span><span class="t-mark-rev t-since-cxx11">(since C++11)</span></span></span></div></div>
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<td> collection of keys, hashed by keys <br /> <span class="t-mark">(class template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/container/dsc_unordered_multiset&action=edit">[edit]</a></span>
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<td colspan="2"> <h3> <span class="mw-headline" id="Functions">Functions</span></h3>
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<tr class="t-dsc">
<td> <div class="t-dsc-member-div"><div><a href="../container/unordered_set/operator_cmp.html" title="cpp/container/unordered set/operator cmp"> <span class="t-lines"><span>operator==</span><span>operator!=</span></span></a></div></div>
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<td> compares the values in the unordered_set <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/container/dsc_operator_cmp_unord&action=edit">[edit]</a></span>
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<td> <div class="t-dsc-member-div"><div><a href="../container/unordered_set/swap2.html" title="cpp/container/unordered set/swap2"> <span class="t-lines"><span>std::swap<span class="t-dsc-small">(std::unordered_set)</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></div>
</td>
<td> specializes the <span class="t-lc"><a href="../algorithm/swap.html" title="cpp/algorithm/swap">std::swap</a></span> algorithm <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/container/dsc_swap2&action=edit">[edit]</a></span>
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<td> <div class="t-dsc-member-div"><div><a href="../container/unordered_multiset/operator_cmp.html" title="cpp/container/unordered multiset/operator cmp"> <span class="t-lines"><span>operator==</span><span>operator!=</span></span></a></div></div>
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<td> compares the values in the unordered_multiset <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/container/dsc_operator_cmp_unord&action=edit">[edit]</a></span>
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<td> <div class="t-dsc-member-div"><div><a href="../container/unordered_multiset/swap2.html" title="cpp/container/unordered multiset/swap2"> <span class="t-lines"><span>std::swap<span class="t-dsc-small">(std::unordered_multiset)</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></div>
</td>
<td> specializes the <span class="t-lc"><a href="../algorithm/swap.html" title="cpp/algorithm/swap">std::swap</a></span> algorithm <br /> <span class="t-mark">(function template)</span> <span class="editsection noprint plainlinks" title="Edit this template"><a rel="nofollow" class="external text" href="http://en.cppreference.com/mwiki/index.php?title=Template:cpp/container/dsc_swap2&action=edit">[edit]</a></span>
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<h3><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/header/unordered_set&action=edit&section=1" title="Edit section: Synopsis">edit</a>]</span> <span class="mw-headline" id="Synopsis">Synopsis</span></h3>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="co2">#include <initializer_list></span>
 
<span class="kw1">namespace</span> std <span class="br0">{</span>
<span class="co1">// class template unordered_set:</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Key,
<span class="kw1">class</span> Hash <span class="sy1">=</span> hash<span class="sy1"><</span>Key<span class="sy1">></span>,
<span class="kw1">class</span> Pred <span class="sy1">=</span> <a href="../utility/functional/equal_to.html"><span class="kw909">std::<span class="me2">equal_to</span></span></a><span class="sy1"><</span>Key<span class="sy1">></span>,
<span class="kw1">class</span> Alloc <span class="sy1">=</span> <a href="../memory/allocator.html"><span class="kw601">std::<span class="me2">allocator</span></span></a><span class="sy1"><</span>Key<span class="sy1">></span> <span class="sy1">></span>
<span class="kw1">class</span> unordered_set<span class="sy4">;</span>
 
<span class="co1">// class template unordered_multiset:</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Key,
<span class="kw1">class</span> Hash <span class="sy1">=</span> hash<span class="sy1"><</span>Key<span class="sy1">></span>,
<span class="kw1">class</span> Pred <span class="sy1">=</span> <a href="../utility/functional/equal_to.html"><span class="kw909">std::<span class="me2">equal_to</span></span></a><span class="sy1"><</span>Key<span class="sy1">></span>,
<span class="kw1">class</span> Alloc <span class="sy1">=</span> <a href="../memory/allocator.html"><span class="kw601">std::<span class="me2">allocator</span></span></a><span class="sy1"><</span>Key<span class="sy1">></span> <span class="sy1">></span>
<span class="kw1">class</span> unordered_multiset<span class="sy4">;</span>
 
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Key, <span class="kw1">class</span> Hash, <span class="kw1">class</span> Pred, <span class="kw1">class</span> Alloc<span class="sy1">></span>
<span class="kw4">void</span> swap<span class="br0">(</span>unordered_set<span class="sy1"><</span>Key, Hash, Pred, Alloc<span class="sy1">></span><span class="sy3">&</span> x,
unordered_set<span class="sy1"><</span>Key, Hash, Pred, Alloc<span class="sy1">></span><span class="sy3">&</span> y<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Key, <span class="kw1">class</span> Hash, <span class="kw1">class</span> Pred, <span class="kw1">class</span> Alloc<span class="sy1">></span>
<span class="kw4">void</span> swap<span class="br0">(</span>unordered_multiset<span class="sy1"><</span>Key, Hash, Pred, Alloc<span class="sy1">></span><span class="sy3">&</span> x,
unordered_multiset<span class="sy1"><</span>Key, Hash, Pred, Alloc<span class="sy1">></span><span class="sy3">&</span> y<span class="br0">)</span><span class="sy4">;</span>
 
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Key, <span class="kw1">class</span> Hash, <span class="kw1">class</span> Pred, <span class="kw1">class</span> Alloc<span class="sy1">></span>
<span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span><span class="kw4">const</span> unordered_set<span class="sy1"><</span>Key, Hash, Pred, Alloc<span class="sy1">></span><span class="sy3">&</span> a,
<span class="kw4">const</span> unordered_set<span class="sy1"><</span>Key, Hash, Pred, Alloc<span class="sy1">></span><span class="sy3">&</span> b<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Key, <span class="kw1">class</span> Hash, <span class="kw1">class</span> Pred, <span class="kw1">class</span> Alloc<span class="sy1">></span>
<span class="kw4">bool</span> operator<span class="sy3">!</span><span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> unordered_set<span class="sy1"><</span>Key, Hash, Pred, Alloc<span class="sy1">></span><span class="sy3">&</span> a,
<span class="kw4">const</span> unordered_set<span class="sy1"><</span>Key, Hash, Pred, Alloc<span class="sy1">></span><span class="sy3">&</span> b<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Key, <span class="kw1">class</span> Hash, <span class="kw1">class</span> Pred, <span class="kw1">class</span> Alloc<span class="sy1">></span>
<span class="kw4">bool</span> operator<span class="sy1">==</span><span class="br0">(</span><span class="kw4">const</span> unordered_multiset<span class="sy1"><</span>Key, Hash, Pred, Alloc<span class="sy1">></span><span class="sy3">&</span> a,
<span class="kw4">const</span> unordered_multiset<span class="sy1"><</span>Key, Hash, Pred, Alloc<span class="sy1">></span><span class="sy3">&</span> b<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Key, <span class="kw1">class</span> Hash, <span class="kw1">class</span> Pred, <span class="kw1">class</span> Alloc<span class="sy1">></span>
<span class="kw4">bool</span> operator<span class="sy3">!</span><span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> unordered_multiset<span class="sy1"><</span>Key, Hash, Pred, Alloc<span class="sy1">></span><span class="sy3">&</span> a,
<span class="kw4">const</span> unordered_multiset<span class="sy1"><</span>Key, Hash, Pred, Alloc<span class="sy1">></span><span class="sy3">&</span> b<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span> <span class="co1">// namespace std</span></pre></div></div>
<p><br />
</p>
<h4><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/header/unordered_set&action=edit&section=2" title="Edit section: Class std::unordered set">edit</a>]</span> <span class="mw-headline" id="Class_std::unordered_set">Class <span class="t-lc"><a href="../container/unordered_set.html" title="cpp/container/unordered set">std::unordered_set</a></span></span></h4>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Key,
<span class="kw1">class</span> Hash <span class="sy1">=</span> hash<span class="sy1"><</span>Key<span class="sy1">></span>,
<span class="kw1">class</span> Pred <span class="sy1">=</span> <a href="../utility/functional/equal_to.html"><span class="kw909">std::<span class="me2">equal_to</span></span></a><span class="sy1"><</span>Key<span class="sy1">></span>,
<span class="kw1">class</span> Allocator <span class="sy1">=</span> <a href="../memory/allocator.html"><span class="kw601">std::<span class="me2">allocator</span></span></a><span class="sy1"><</span>Key<span class="sy1">></span> <span class="sy1">></span>
<span class="kw1">class</span> unordered_set
<span class="br0">{</span>
<span class="kw1">public</span><span class="sy4">:</span>
<span class="co1">// types</span>
<span class="kw1">typedef</span> Key key_type<span class="sy4">;</span>
<span class="kw1">typedef</span> Key value_type<span class="sy4">;</span>
<span class="kw1">typedef</span> Hash hasher<span class="sy4">;</span>
<span class="kw1">typedef</span> Pred key_equal<span class="sy4">;</span>
<span class="kw1">typedef</span> Allocator allocator_type<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="kw1">typename</span> allocator_type<span class="sy4">::</span><span class="me2">pointer</span> pointer<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="kw1">typename</span> allocator_type<span class="sy4">::</span><span class="me2">const_pointer</span> const_pointer<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="kw1">typename</span> allocator_type<span class="sy4">::</span><span class="me2">reference</span> reference<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="kw1">typename</span> allocator_type<span class="sy4">::</span><span class="me2">const_reference</span> const_reference<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*implementation-defined*/</span> size_type<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*implementation-defined*/</span> difference_type<span class="sy4">;</span>
 
<span class="kw1">typedef</span> <span class="coMULTI">/*implementation-defined*/</span> iterator<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*implementation-defined*/</span> const_iterator<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*implementation-defined*/</span> local_iterator<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*implementation-defined*/</span> const_local_iterator<span class="sy4">;</span>
 
<span class="co1">// construct/destroy/copy</span>
<span class="kw1">explicit</span> unordered_set<span class="br0">(</span>size_type n <span class="sy1">=</span> implementation<span class="sy2">-</span>defined,
<span class="kw4">const</span> hasher<span class="sy3">&</span> hf <span class="sy1">=</span> hasher<span class="br0">(</span><span class="br0">)</span>,
<span class="kw4">const</span> key_equal<span class="sy3">&</span> eql <span class="sy1">=</span> key_equal<span class="br0">(</span><span class="br0">)</span>,
<span class="kw4">const</span> allocator_type<span class="sy3">&</span> a <span class="sy1">=</span> allocator_type<span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> InputIterator<span class="sy1">></span>
unordered_set<span class="br0">(</span>InputIterator f, InputIterator l,
size_type n <span class="sy1">=</span> see below,
<span class="kw4">const</span> hasher<span class="sy3">&</span> hf <span class="sy1">=</span> hasher<span class="br0">(</span><span class="br0">)</span>,
<span class="kw4">const</span> key_equal<span class="sy3">&</span> eql <span class="sy1">=</span> key_equal<span class="br0">(</span><span class="br0">)</span>,
<span class="kw4">const</span> allocator_type<span class="sy3">&</span> a <span class="sy1">=</span> allocator_type<span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
unordered_set<span class="br0">(</span><span class="kw4">const</span> unordered_set<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
unordered_set<span class="br0">(</span>unordered_set<span class="sy3">&&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">explicit</span> unordered_set<span class="br0">(</span><span class="kw4">const</span> Allocator<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
unordered_set<span class="br0">(</span><span class="kw4">const</span> unordered_set<span class="sy3">&</span>, <span class="kw4">const</span> Allocator<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
unordered_set<span class="br0">(</span>unordered_set<span class="sy3">&&</span>, <span class="kw4">const</span> Allocator<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
unordered_set<span class="br0">(</span>initializer_list<span class="sy1"><</span>value_type<span class="sy1">></span>,
size_type <span class="sy1">=</span> see below,
<span class="kw4">const</span> hasher<span class="sy3">&</span> hf <span class="sy1">=</span> hasher<span class="br0">(</span><span class="br0">)</span>,
<span class="kw4">const</span> key_equal<span class="sy3">&</span> eql <span class="sy1">=</span> key_equal<span class="br0">(</span><span class="br0">)</span>,
<span class="kw4">const</span> allocator_type<span class="sy3">&</span> a <span class="sy1">=</span> allocator_type<span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
~unordered_set<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
unordered_set<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> unordered_set<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
unordered_set<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span>unordered_set<span class="sy3">&&</span><span class="br0">)</span><span class="sy4">;</span>
unordered_set<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span>initializer_list<span class="sy1"><</span>value_type<span class="sy1">></span><span class="br0">)</span><span class="sy4">;</span>
allocator_type get_allocator<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">// size and capacity</span>
<span class="kw4">bool</span> empty<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
size_type size<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
size_type max_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="co1">// iterators</span>
iterator begin<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
const_iterator begin<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
iterator end<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
const_iterator end<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
const_iterator cbegin<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
const_iterator cend<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">// modifiers</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span> pair<span class="sy1"><</span>iterator, <span class="kw4">bool</span><span class="sy1">></span> emplace<span class="br0">(</span>Args<span class="sy3">&&</span>... <span class="me1">args</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span> iterator emplace_hint<span class="br0">(</span>const_iterator position, Args<span class="sy3">&&</span>... <span class="me1">args</span><span class="br0">)</span><span class="sy4">;</span>
pair<span class="sy1"><</span>iterator, <span class="kw4">bool</span><span class="sy1">></span> insert<span class="br0">(</span><span class="kw4">const</span> value_type<span class="sy3">&</span> obj<span class="br0">)</span><span class="sy4">;</span>
pair<span class="sy1"><</span>iterator, <span class="kw4">bool</span><span class="sy1">></span> insert<span class="br0">(</span>value_type<span class="sy3">&&</span> obj<span class="br0">)</span><span class="sy4">;</span>
iterator insert<span class="br0">(</span>const_iterator hint, <span class="kw4">const</span> value_type<span class="sy3">&</span> obj<span class="br0">)</span><span class="sy4">;</span>
iterator insert<span class="br0">(</span>const_iterator hint, value_type<span class="sy3">&&</span> obj<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> InputIterator<span class="sy1">></span> <span class="kw4">void</span> insert<span class="br0">(</span>InputIterator first, InputIterator last<span class="br0">)</span><span class="sy4">;</span>
<span class="kw4">void</span> insert<span class="br0">(</span>initializer_list<span class="sy1"><</span>value_type<span class="sy1">></span><span class="br0">)</span><span class="sy4">;</span>
 
iterator erase<span class="br0">(</span>const_iterator position<span class="br0">)</span><span class="sy4">;</span>
size_type erase<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span><span class="sy4">;</span>
iterator erase<span class="br0">(</span>const_iterator first, const_iterator last<span class="br0">)</span><span class="sy4">;</span>
<span class="kw4">void</span> clear<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
<span class="kw4">void</span> swap<span class="br0">(</span>unordered_set<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="co1">// observers</span>
hasher hash_function<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
key_equal key_eq<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
 
<span class="co1">// lookup</span>
iterator find<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span><span class="sy4">;</span>
const_iterator find<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
size_type count<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
<a href="../utility/pair.html"><span class="kw936">std::<span class="me2">pair</span></span></a><span class="sy1"><</span>iterator, iterator<span class="sy1">></span> equal_range<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span><span class="sy4">;</span>
<a href="../utility/pair.html"><span class="kw936">std::<span class="me2">pair</span></span></a><span class="sy1"><</span>const_iterator, const_iterator<span class="sy1">></span> equal_range<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
 
<span class="co1">// bucket interface</span>
size_type bucket_count<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
size_type max_bucket_count<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
size_type bucket_size<span class="br0">(</span>size_type n<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
size_type bucket<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
local_iterator begin<span class="br0">(</span>size_type n<span class="br0">)</span><span class="sy4">;</span>
const_local_iterator begin<span class="br0">(</span>size_type n<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
local_iterator end<span class="br0">(</span>size_type n<span class="br0">)</span><span class="sy4">;</span>
const_local_iterator end<span class="br0">(</span>size_type n<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
const_local_iterator cbegin<span class="br0">(</span>size_type n<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
const_local_iterator cend<span class="br0">(</span>size_type n<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
 
<span class="co1">// hash policy</span>
<span class="kw4">float</span> load_factor<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">float</span> max_load_factor<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">void</span> max_load_factor<span class="br0">(</span><span class="kw4">float</span> z<span class="br0">)</span><span class="sy4">;</span>
<span class="kw4">void</span> rehash<span class="br0">(</span>size_type n<span class="br0">)</span><span class="sy4">;</span>
<span class="kw4">void</span> reserve<span class="br0">(</span>size_type n<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span><span class="sy4">;</span></pre></div></div>
<p><br />
</p>
<h4><span class="editsection">[<a href="http://en.cppreference.com/mwiki/index.php?title=cpp/header/unordered_set&action=edit&section=3" title="Edit section: Class std::unordered multiset">edit</a>]</span> <span class="mw-headline" id="Class_std::unordered_multiset">Class <span class="t-lc"><a href="../container/unordered_multiset.html" title="cpp/container/unordered multiset">std::unordered_multiset</a></span></span></h4>
<div dir="ltr" class="mw-geshi" style="text-align: left;"><div class="cpp source-cpp"><pre class="de1"><span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> Key,
<span class="kw1">class</span> Hash <span class="sy1">=</span> hash<span class="sy1"><</span>Key<span class="sy1">></span>,
<span class="kw1">class</span> Pred <span class="sy1">=</span> <a href="../utility/functional/equal_to.html"><span class="kw909">std::<span class="me2">equal_to</span></span></a><span class="sy1"><</span>Key<span class="sy1">></span>,
<span class="kw1">class</span> Allocator <span class="sy1">=</span> <a href="../memory/allocator.html"><span class="kw601">std::<span class="me2">allocator</span></span></a><span class="sy1"><</span>Key<span class="sy1">></span> <span class="sy1">></span>
<span class="kw1">class</span> unordered_multiset
<span class="br0">{</span>
<span class="kw1">public</span><span class="sy4">:</span>
<span class="co1">// types</span>
<span class="kw1">typedef</span> Key key_type<span class="sy4">;</span>
<span class="kw1">typedef</span> Key value_type<span class="sy4">;</span>
<span class="kw1">typedef</span> Hash hasher<span class="sy4">;</span>
<span class="kw1">typedef</span> Pred key_equal<span class="sy4">;</span>
<span class="kw1">typedef</span> Allocator allocator_type<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="kw1">typename</span> allocator_type<span class="sy4">::</span><span class="me2">pointer</span> pointer<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="kw1">typename</span> allocator_type<span class="sy4">::</span><span class="me2">const_pointer</span> const_pointer<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="kw1">typename</span> allocator_type<span class="sy4">::</span><span class="me2">reference</span> reference<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="kw1">typename</span> allocator_type<span class="sy4">::</span><span class="me2">const_reference</span> const_reference<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*implementation-defined*/</span> size_type<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*implementation-defined*/</span> difference_type<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*implementation-defined*/</span> iterator<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*implementation-defined*/</span> const_iterator<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*implementation-defined*/</span> local_iterator<span class="sy4">;</span>
<span class="kw1">typedef</span> <span class="coMULTI">/*implementation-defined*/</span> const_local_iterator<span class="sy4">;</span>
 
<span class="co1">// construct/destroy/copy</span>
<span class="kw1">explicit</span> unordered_multiset<span class="br0">(</span>size_type n <span class="sy1">=</span> <span class="coMULTI">/*implementation-defined*/</span>,
<span class="kw4">const</span> hasher<span class="sy3">&</span> hf <span class="sy1">=</span> hasher<span class="br0">(</span><span class="br0">)</span>,
<span class="kw4">const</span> key_equal<span class="sy3">&</span> eql <span class="sy1">=</span> key_equal<span class="br0">(</span><span class="br0">)</span>,
<span class="kw4">const</span> allocator_type<span class="sy3">&</span> a <span class="sy1">=</span> allocator_type<span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> InputIterator<span class="sy1">></span>
unordered_multiset<span class="br0">(</span>InputIterator f, InputIterator l,
size_type n <span class="sy1">=</span> see below,
<span class="kw4">const</span> hasher<span class="sy3">&</span> hf <span class="sy1">=</span> hasher<span class="br0">(</span><span class="br0">)</span>,
<span class="kw4">const</span> key_equal<span class="sy3">&</span> eql <span class="sy1">=</span> key_equal<span class="br0">(</span><span class="br0">)</span>,
<span class="kw4">const</span> allocator_type<span class="sy3">&</span> a <span class="sy1">=</span> allocator_type<span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
unordered_multiset<span class="br0">(</span><span class="kw4">const</span> unordered_multiset<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
unordered_multiset<span class="br0">(</span>unordered_multiset<span class="sy3">&&</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">explicit</span> unordered_multiset<span class="br0">(</span><span class="kw4">const</span> Allocator<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
unordered_multiset<span class="br0">(</span><span class="kw4">const</span> unordered_multiset<span class="sy3">&</span>, <span class="kw4">const</span> Allocator<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
unordered_multiset<span class="br0">(</span>unordered_multiset<span class="sy3">&&</span>, <span class="kw4">const</span> Allocator<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
unordered_multiset<span class="br0">(</span>initializer_list<span class="sy1"><</span>value_type<span class="sy1">></span>,
size_type <span class="sy1">=</span> see below,
<span class="kw4">const</span> hasher<span class="sy3">&</span> hf <span class="sy1">=</span> hasher<span class="br0">(</span><span class="br0">)</span>,
<span class="kw4">const</span> key_equal<span class="sy3">&</span> eql <span class="sy1">=</span> key_equal<span class="br0">(</span><span class="br0">)</span>,
<span class="kw4">const</span> allocator_type<span class="sy3">&</span> a <span class="sy1">=</span> allocator_type<span class="br0">(</span><span class="br0">)</span><span class="br0">)</span><span class="sy4">;</span>
~unordered_multiset<span class="br0">(</span><span class="br0">)</span><span class="sy4">;</span>
unordered_multiset<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span><span class="kw4">const</span> unordered_multiset<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
unordered_multiset operator<span class="sy1">=</span><span class="br0">(</span>unordered_multiset<span class="sy3">&&</span><span class="br0">)</span><span class="sy4">;</span>
unordered_multiset<span class="sy3">&</span> operator<span class="sy1">=</span><span class="br0">(</span>initializer_list<span class="sy1"><</span>value_type<span class="sy1">></span><span class="br0">)</span><span class="sy4">;</span>
allocator_type get_allocator<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">// size and capacity</span>
<span class="kw4">bool</span> empty<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
size_type size<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
size_type max_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="co1">// iterators</span>
iterator begin<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
const_iterator begin<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
iterator end<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
const_iterator end<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
const_iterator cbegin<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
const_iterator cend<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">// modifiers</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span> iterator emplace<span class="br0">(</span>Args<span class="sy3">&&</span>... <span class="me1">args</span><span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span>... <span class="me1">Args</span><span class="sy1">></span> iterator emplace_hint<span class="br0">(</span>const_iterator position, Args<span class="sy3">&&</span>... <span class="me1">args</span><span class="br0">)</span><span class="sy4">;</span>
iterator insert<span class="br0">(</span><span class="kw4">const</span> value_type<span class="sy3">&</span> obj<span class="br0">)</span><span class="sy4">;</span>
iterator insert<span class="br0">(</span>value_type<span class="sy3">&&</span> obj<span class="br0">)</span><span class="sy4">;</span>
iterator insert<span class="br0">(</span>const_iterator hint, <span class="kw4">const</span> value_type<span class="sy3">&</span> obj<span class="br0">)</span><span class="sy4">;</span>
iterator insert<span class="br0">(</span>const_iterator hint, value_type<span class="sy3">&&</span> obj<span class="br0">)</span><span class="sy4">;</span>
<span class="kw1">template</span> <span class="sy1"><</span><span class="kw1">class</span> InputIterator<span class="sy1">></span> <span class="kw4">void</span> insert<span class="br0">(</span>InputIterator first, InputIterator last<span class="br0">)</span><span class="sy4">;</span>
<span class="kw4">void</span> insert<span class="br0">(</span>initializer_list<span class="sy1"><</span>value_type<span class="sy1">></span><span class="br0">)</span><span class="sy4">;</span>
 
iterator erase<span class="br0">(</span>const_iterator position<span class="br0">)</span><span class="sy4">;</span>
size_type erase<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span><span class="sy4">;</span>
iterator erase<span class="br0">(</span>const_iterator first, const_iterator last<span class="br0">)</span><span class="sy4">;</span>
<span class="kw4">void</span> clear<span class="br0">(</span><span class="br0">)</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
 
<span class="kw4">void</span> swap<span class="br0">(</span>unordered_multiset<span class="sy3">&</span><span class="br0">)</span><span class="sy4">;</span>
 
<span class="co1">// observers</span>
hasher hash_function<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
key_equal key_eq<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
 
<span class="co1">// lookup</span>
iterator find<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span><span class="sy4">;</span>
const_iterator find<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
size_type count<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
<a href="../utility/pair.html"><span class="kw936">std::<span class="me2">pair</span></span></a><span class="sy1"><</span>iterator, iterator<span class="sy1">></span> equal_range<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span><span class="sy4">;</span>
<a href="../utility/pair.html"><span class="kw936">std::<span class="me2">pair</span></span></a><span class="sy1"><</span>const_iterator, const_iterator<span class="sy1">></span> equal_range<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
 
<span class="co1">// bucket interface</span>
size_type bucket_count<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
size_type max_bucket_count<span class="br0">(</span><span class="br0">)</span> <span class="kw4">const</span> <span class="kw1">noexcept</span><span class="sy4">;</span>
size_type bucket_size<span class="br0">(</span>size_type n<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
size_type bucket<span class="br0">(</span><span class="kw4">const</span> key_type<span class="sy3">&</span> k<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
local_iterator begin<span class="br0">(</span>size_type n<span class="br0">)</span><span class="sy4">;</span>
const_local_iterator begin<span class="br0">(</span>size_type n<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
local_iterator end<span class="br0">(</span>size_type n<span class="br0">)</span><span class="sy4">;</span>
const_local_iterator end<span class="br0">(</span>size_type n<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
const_local_iterator cbegin<span class="br0">(</span>size_type n<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
const_local_iterator cend<span class="br0">(</span>size_type n<span class="br0">)</span> <span class="kw4">const</span><span class="sy4">;</span>
 
<span class="co1">// hash policy</span>
<span class="kw4">float</span> load_factor<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">float</span> max_load_factor<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">void</span> max_load_factor<span class="br0">(</span><span class="kw4">float</span> z<span class="br0">)</span><span class="sy4">;</span>
<span class="kw4">void</span> rehash<span class="br0">(</span>size_type n<span class="br0">)</span><span class="sy4">;</span>
<span class="kw4">void</span> reserve<span class="br0">(</span>size_type n<span class="br0">)</span><span class="sy4">;</span>
<span class="br0">}</span><span class="sy4">;</span></pre></div></div>
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