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<h2><span class="refentrytitle">Class template multimap</span></h2>
<p>boost::container::multimap</p>
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<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../boost_container_header_reference.html#header.boost.container.map_hpp" title="Header &lt;boost/container/map.hpp&gt;">boost/container/map.hpp</a>&gt;

</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> Key<span class="special">,</span> <span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">typename</span> Compare <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">less</span><span class="special">&lt;</span><span class="identifier">Key</span><span class="special">&gt;</span><span class="special">,</span> 
         <span class="keyword">typename</span> Allocator <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">allocator</span><span class="special">&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span> <span class="keyword">const</span> <span class="identifier">Key</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&gt;</span><span class="special">,</span> 
         <span class="keyword">typename</span> MultiMapOptions <span class="special">=</span> <span class="identifier">tree_assoc_defaults</span><span class="special">&gt;</span> 
<span class="keyword">class</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
  <span class="comment">// types</span>
  <span class="keyword">typedef</span> <span class="identifier">Key</span>                                                              <a name="boost.container.multimap.key_type"></a><span class="identifier">key_type</span><span class="special">;</span>              
  <span class="keyword">typedef</span> <span class="identifier">T</span>                                                                <a name="boost.container.multimap.mapped_type"></a><span class="identifier">mapped_type</span><span class="special">;</span>           
  <span class="keyword">typedef</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span> <span class="keyword">const</span> <span class="identifier">Key</span><span class="special">,</span> <span class="identifier">T</span> <span class="special">&gt;</span>                                        <a name="boost.container.multimap.value_type"></a><span class="identifier">value_type</span><span class="special">;</span>            
  <span class="keyword">typedef</span> <a class="link" href="allocator_traits.html" title="Struct template allocator_traits">boost::container::allocator_traits</a><span class="special">&lt;</span> <span class="identifier">Allocator</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">pointer</span>         <a name="boost.container.multimap.pointer"></a><span class="identifier">pointer</span><span class="special">;</span>               
  <span class="keyword">typedef</span> <a class="link" href="allocator_traits.html" title="Struct template allocator_traits">boost::container::allocator_traits</a><span class="special">&lt;</span> <span class="identifier">Allocator</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">const_pointer</span>   <a name="boost.container.multimap.const_pointer"></a><span class="identifier">const_pointer</span><span class="special">;</span>         
  <span class="keyword">typedef</span> <a class="link" href="allocator_traits.html" title="Struct template allocator_traits">boost::container::allocator_traits</a><span class="special">&lt;</span> <span class="identifier">Allocator</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">reference</span>       <a name="boost.container.multimap.reference"></a><span class="identifier">reference</span><span class="special">;</span>             
  <span class="keyword">typedef</span> <a class="link" href="allocator_traits.html" title="Struct template allocator_traits">boost::container::allocator_traits</a><span class="special">&lt;</span> <span class="identifier">Allocator</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">const_reference</span> <a name="boost.container.multimap.const_reference"></a><span class="identifier">const_reference</span><span class="special">;</span>       
  <span class="keyword">typedef</span> <a class="link" href="allocator_traits.html" title="Struct template allocator_traits">boost::container::allocator_traits</a><span class="special">&lt;</span> <span class="identifier">Allocator</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">size_type</span>       <a name="boost.container.multimap.size_type"></a><span class="identifier">size_type</span><span class="special">;</span>             
  <span class="keyword">typedef</span> <a class="link" href="allocator_traits.html" title="Struct template allocator_traits">boost::container::allocator_traits</a><span class="special">&lt;</span> <span class="identifier">Allocator</span> <span class="special">&gt;</span><span class="special">::</span><span class="identifier">difference_type</span> <a name="boost.container.multimap.difference_type"></a><span class="identifier">difference_type</span><span class="special">;</span>       
  <span class="keyword">typedef</span> <span class="identifier">Allocator</span>                                                        <a name="boost.container.multimap.allocator_type"></a><span class="identifier">allocator_type</span><span class="special">;</span>        
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span>                                           <a name="boost.container.multimap.stored_allocator_type"></a><span class="identifier">stored_allocator_type</span><span class="special">;</span> 
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span>                                           <a name="boost.container.multimap.value_compare"></a><span class="identifier">value_compare</span><span class="special">;</span>         
  <span class="keyword">typedef</span> <span class="identifier">Compare</span>                                                          <a name="boost.container.multimap.key_compare"></a><span class="identifier">key_compare</span><span class="special">;</span>           
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span>                                           <a name="boost.container.multimap.iterator"></a><span class="identifier">iterator</span><span class="special">;</span>              
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span>                                           <a name="boost.container.multimap.const_iterator"></a><span class="identifier">const_iterator</span><span class="special">;</span>        
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span>                                           <a name="boost.container.multimap.reverse_iterator"></a><span class="identifier">reverse_iterator</span><span class="special">;</span>      
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span>                                           <a name="boost.container.multimap.const_reverse_iterator"></a><span class="identifier">const_reverse_iterator</span><span class="special">;</span>
  <span class="keyword">typedef</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span> <span class="identifier">key_type</span><span class="special">,</span> <span class="identifier">mapped_type</span> <span class="special">&gt;</span>                               <a name="boost.container.multimap.nonconst_value_type"></a><span class="identifier">nonconst_value_type</span><span class="special">;</span>   
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span>                                           <a name="boost.container.multimap.movable_value_type"></a><span class="identifier">movable_value_type</span><span class="special">;</span>    

  <span class="comment">// <a class="link" href="multimap.html#boost.container.multimapconstruct-copy-destruct">construct/copy/destruct</a></span>
  <a class="link" href="multimap.html#idp38865280-bb"><span class="identifier">multimap</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">explicit</span> <a class="link" href="multimap.html#idp38867408-bb"><span class="identifier">multimap</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">Compare</span> <span class="special">&amp;</span><span class="special">,</span> 
                    <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">allocator_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">explicit</span> <a class="link" href="multimap.html#idp38871504-bb"><span class="identifier">multimap</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> InputIterator<span class="special">&gt;</span> 
    <a class="link" href="multimap.html#idp38874640-bb"><span class="identifier">multimap</span></a><span class="special">(</span><span class="identifier">InputIterator</span><span class="special">,</span> <span class="identifier">InputIterator</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">Compare</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">Compare</span><span class="special">(</span><span class="special">)</span><span class="special">,</span> 
             <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">allocator_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> InputIterator<span class="special">&gt;</span> 
    <a class="link" href="multimap.html#idp38881136-bb"><span class="identifier">multimap</span></a><span class="special">(</span><a class="link" href="ordered_range_t.html" title="Struct ordered_range_t">ordered_range_t</a><span class="special">,</span> <span class="identifier">InputIterator</span><span class="special">,</span> <span class="identifier">InputIterator</span><span class="special">,</span> 
             <span class="keyword">const</span> <span class="identifier">Compare</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">Compare</span><span class="special">(</span><span class="special">)</span><span class="special">,</span> 
             <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">allocator_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="multimap.html#idp38890208-bb"><span class="identifier">multimap</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">initializer_list</span><span class="special">&lt;</span> <span class="identifier">value_type</span> <span class="special">&gt;</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">Compare</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">Compare</span><span class="special">(</span><span class="special">)</span><span class="special">,</span> 
           <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">allocator_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="multimap.html#idp38895216-bb"><span class="identifier">multimap</span></a><span class="special">(</span><a class="link" href="ordered_range_t.html" title="Struct ordered_range_t">ordered_range_t</a><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">initializer_list</span><span class="special">&lt;</span> <span class="identifier">value_type</span> <span class="special">&gt;</span><span class="special">,</span> 
           <span class="keyword">const</span> <span class="identifier">Compare</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">Compare</span><span class="special">(</span><span class="special">)</span><span class="special">,</span> 
           <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">allocator_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="multimap.html#idp38898976-bb"><span class="identifier">multimap</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="multimap.html#idp38902240-bb"><span class="identifier">multimap</span></a><span class="special">(</span><a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="multimap.html#idp38906224-bb"><span class="identifier">multimap</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="multimap.html#idp38910176-bb"><span class="identifier">multimap</span></a><span class="special">(</span><a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;&amp;</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> <a class="link" href="multimap.html#idp38914784-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> <a class="link" href="multimap.html#idp38918624-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> <a class="link" href="multimap.html#idp38922288-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">initializer_list</span><span class="special">&lt;</span> <span class="identifier">value_type</span> <span class="special">&gt;</span><span class="special">)</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="multimap.html#idp38676320-bb">public member functions</a></span>
  <span class="identifier">allocator_type</span> <a class="link" href="multimap.html#idp38676880-bb"><span class="identifier">get_allocator</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">stored_allocator_type</span> <span class="special">&amp;</span> <a class="link" href="multimap.html#idp38679888-bb"><span class="identifier">get_stored_allocator</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">const</span> <span class="identifier">stored_allocator_type</span> <span class="special">&amp;</span> <a class="link" href="multimap.html#idp38684304-bb"><span class="identifier">get_stored_allocator</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38689008-bb"><span class="identifier">begin</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">const_iterator</span> <a class="link" href="multimap.html#idp38692576-bb"><span class="identifier">begin</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">const_iterator</span> <a class="link" href="multimap.html#idp38696432-bb"><span class="identifier">cbegin</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38700288-bb"><span class="identifier">end</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="identifier">const_iterator</span> <a class="link" href="multimap.html#idp38704112-bb"><span class="identifier">end</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="identifier">const_iterator</span> <a class="link" href="multimap.html#idp38707936-bb"><span class="identifier">cend</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="identifier">reverse_iterator</span> <a class="link" href="multimap.html#idp38711760-bb"><span class="identifier">rbegin</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="identifier">const_reverse_iterator</span> <a class="link" href="multimap.html#idp38715616-bb"><span class="identifier">rbegin</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="identifier">const_reverse_iterator</span> <a class="link" href="multimap.html#idp38719472-bb"><span class="identifier">crbegin</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="identifier">reverse_iterator</span> <a class="link" href="multimap.html#idp38723328-bb"><span class="identifier">rend</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="identifier">const_reverse_iterator</span> <a class="link" href="multimap.html#idp38727184-bb"><span class="identifier">rend</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="identifier">const_reverse_iterator</span> <a class="link" href="multimap.html#idp38731040-bb"><span class="identifier">crend</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="keyword">bool</span> <a class="link" href="multimap.html#idp38734896-bb"><span class="identifier">empty</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">size_type</span> <a class="link" href="multimap.html#idp38738720-bb"><span class="identifier">size</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">size_type</span> <a class="link" href="multimap.html#idp38742560-bb"><span class="identifier">max_size</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span><span class="special">...</span> Args<span class="special">&gt;</span> <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38746384-bb"><span class="identifier">emplace</span></a><span class="special">(</span><span class="identifier">Args</span> <span class="special">&amp;&amp;</span><span class="special">...</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span><span class="special">...</span> Args<span class="special">&gt;</span> <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38752000-bb"><span class="identifier">emplace_hint</span></a><span class="special">(</span><span class="identifier">const_iterator</span><span class="special">,</span> <span class="identifier">Args</span> <span class="special">&amp;&amp;</span><span class="special">...</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38758304-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38761728-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">nonconst_value_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38765200-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="identifier">nonconst_value_type</span> <span class="special">&amp;&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38768656-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="identifier">movable_value_type</span> <span class="special">&amp;&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38772112-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="identifier">const_iterator</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38777232-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="identifier">const_iterator</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">nonconst_value_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38782384-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="identifier">const_iterator</span><span class="special">,</span> <span class="identifier">nonconst_value_type</span> <span class="special">&amp;&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38787520-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="identifier">const_iterator</span><span class="special">,</span> <span class="identifier">movable_value_type</span> <span class="special">&amp;&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> InputIterator<span class="special">&gt;</span> <span class="keyword">void</span> <a class="link" href="multimap.html#idp38792656-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="identifier">InputIterator</span><span class="special">,</span> <span class="identifier">InputIterator</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="multimap.html#idp38798512-bb"><span class="identifier">insert</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">initializer_list</span><span class="special">&lt;</span> <span class="identifier">value_type</span> <span class="special">&gt;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38802000-bb"><span class="identifier">erase</span></a><span class="special">(</span><span class="identifier">const_iterator</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">size_type</span> <a class="link" href="multimap.html#idp38806368-bb"><span class="identifier">erase</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38810672-bb"><span class="identifier">erase</span></a><span class="special">(</span><span class="identifier">const_iterator</span><span class="special">,</span> <span class="identifier">const_iterator</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="multimap.html#idp38815648-bb"><span class="identifier">swap</span></a><span class="special">(</span><a class="link" href="flat_multiset.html" title="Class template flat_multiset">flat_multiset</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="multimap.html#idp38820160-bb"><span class="identifier">clear</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span>
  <span class="identifier">key_compare</span> <a class="link" href="multimap.html#idp38823968-bb"><span class="identifier">key_comp</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">value_compare</span> <a class="link" href="multimap.html#idp38826960-bb"><span class="identifier">value_comp</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38829968-bb"><span class="identifier">find</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">const_iterator</span> <a class="link" href="multimap.html#idp38833424-bb"><span class="identifier">find</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">size_type</span> <a class="link" href="multimap.html#idp38837168-bb"><span class="identifier">count</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38840832-bb"><span class="identifier">lower_bound</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">const_iterator</span> <a class="link" href="multimap.html#idp38844288-bb"><span class="identifier">lower_bound</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="multimap.html#idp38848032-bb"><span class="identifier">upper_bound</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">const_iterator</span> <a class="link" href="multimap.html#idp38851488-bb"><span class="identifier">upper_bound</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span> <span class="identifier">iterator</span><span class="special">,</span> <span class="identifier">iterator</span> <span class="special">&gt;</span> <a class="link" href="multimap.html#idp38855232-bb"><span class="identifier">equal_range</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span> <span class="identifier">const_iterator</span><span class="special">,</span> <span class="identifier">const_iterator</span> <span class="special">&gt;</span> 
  <a class="link" href="multimap.html#idp38858672-bb"><span class="identifier">equal_range</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="multimap.html#idp38862400-bb"><span class="identifier">rebalance</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="multimap.html#idp38924848-bb">friend functions</a></span>
  <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="multimap.html#idp38925408-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="multimap.html#idp38930400-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="multimap.html#idp38935392-bb"><span class="keyword">operator</span><span class="special">&lt;</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="multimap.html#idp38940384-bb"><span class="keyword">operator</span><span class="special">&gt;</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="multimap.html#idp38945376-bb"><span class="keyword">operator</span><span class="special">&lt;=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="multimap.html#idp38950384-bb"><span class="keyword">operator</span><span class="special">&gt;=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">friend</span> <span class="keyword">void</span> <a class="link" href="multimap.html#idp38955392-bb"><span class="identifier">swap</span></a><span class="special">(</span><a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">,</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idp163579200"></a><h2>Description</h2>
<p>A multimap is a kind of associative container that supports equivalent keys (possibly containing multiple copies of the same key value) and provides for fast retrieval of values of another type T based on the keys. The multimap class supports bidirectional iterators.</p>
<p>A multimap satisfies all of the requirements of a container and of a reversible container and of an associative container. The <code class="computeroutput">value_type</code> stored by this container is the value_type is std::pair&lt;const Key, T&gt;.</p>
<p>
</p>
<div class="refsect2">
<a name="idp163581632"></a><h3>Template Parameters</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><span class="keyword">typename</span> Key</pre>
<p>is the key_type of the map </p>
</li>
<li class="listitem"><pre class="literallayout"><span class="keyword">typename</span> T</pre></li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">typename</span> Compare <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">less</span><span class="special">&lt;</span><span class="identifier">Key</span><span class="special">&gt;</span></pre>
<p>is the ordering function for Keys (e.g. <span class="emphasis"><em>std::less&lt;Key&gt;</em></span>). </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">typename</span> Allocator <span class="special">=</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">allocator</span><span class="special">&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span> <span class="keyword">const</span> <span class="identifier">Key</span><span class="special">,</span> <span class="identifier">T</span><span class="special">&gt;</span> <span class="special">&gt;</span></pre>
<p>is the allocator to allocate the <code class="computeroutput">value_type</code>s (e.g. <span class="emphasis"><em>allocator&lt; std::pair&lt;const Key, T&gt; &gt; </em></span>). </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">typename</span> MultiMapOptions <span class="special">=</span> <span class="identifier">tree_assoc_defaults</span></pre>
<p>is an packed option type generated using using <code class="computeroutput"><a class="link" href="tree_assoc_options.html" title="Struct template tree_assoc_options">boost::container::tree_assoc_options</a></code>. </p>
</li>
</ol></div>
</div>
<div class="refsect2">
<a name="idp163609536"></a><h3>
<a name="boost.container.multimapconstruct-copy-destruct"></a><code class="computeroutput">multimap</code> 
        public
       construct/copy/destruct</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><a name="idp38865280-bb"></a><span class="identifier">multimap</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Default constructs an empty multimap.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">explicit</span> <a name="idp38867408-bb"></a><span class="identifier">multimap</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">Compare</span> <span class="special">&amp;</span> comp<span class="special">,</span> 
                  <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span> a <span class="special">=</span> <span class="identifier">allocator_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Constructs an empty multimap using the specified allocator.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">explicit</span> <a name="idp38871504-bb"></a><span class="identifier">multimap</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span> a<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Constructs an empty multimap using the specified comparison object and allocator.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> InputIterator<span class="special">&gt;</span> 
  <a name="idp38874640-bb"></a><span class="identifier">multimap</span><span class="special">(</span><span class="identifier">InputIterator</span> first<span class="special">,</span> <span class="identifier">InputIterator</span> last<span class="special">,</span> 
           <span class="keyword">const</span> <span class="identifier">Compare</span> <span class="special">&amp;</span> comp <span class="special">=</span> <span class="identifier">Compare</span><span class="special">(</span><span class="special">)</span><span class="special">,</span> 
           <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span> a <span class="special">=</span> <span class="identifier">allocator_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Constructs an empty multimap using the specified comparison object and allocator, and inserts elements from the range [first ,last ).</p>
<p><span class="bold"><strong>Complexity</strong></span>: Linear in N if the range [first ,last ) is already sorted using comp and otherwise N logN, where N is last - first. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> InputIterator<span class="special">&gt;</span> 
  <a name="idp38881136-bb"></a><span class="identifier">multimap</span><span class="special">(</span><a class="link" href="ordered_range_t.html" title="Struct ordered_range_t">ordered_range_t</a><span class="special">,</span> <span class="identifier">InputIterator</span> first<span class="special">,</span> <span class="identifier">InputIterator</span> last<span class="special">,</span> 
           <span class="keyword">const</span> <span class="identifier">Compare</span> <span class="special">&amp;</span> comp <span class="special">=</span> <span class="identifier">Compare</span><span class="special">(</span><span class="special">)</span><span class="special">,</span> 
           <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span> a <span class="special">=</span> <span class="identifier">allocator_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Constructs an empty multimap using the specified comparison object and allocator, and inserts elements from the ordered range [first ,last). This function is more efficient than the normal range creation for ordered ranges.</p>
<p><span class="bold"><strong>Requires</strong></span>: [first ,last) must be ordered according to the predicate.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Linear in N.</p>
<p><span class="bold"><strong>Note</strong></span>: Non-standard extension. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="idp38890208-bb"></a><span class="identifier">multimap</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">initializer_list</span><span class="special">&lt;</span> <span class="identifier">value_type</span> <span class="special">&gt;</span> il<span class="special">,</span> 
         <span class="keyword">const</span> <span class="identifier">Compare</span> <span class="special">&amp;</span> comp <span class="special">=</span> <span class="identifier">Compare</span><span class="special">(</span><span class="special">)</span><span class="special">,</span> 
         <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span> a <span class="special">=</span> <span class="identifier">allocator_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Constructs an empty multimap using the specified comparison object and allocator, and inserts elements from the range [il.begin(), il.end()).</p>
<p><span class="bold"><strong>Complexity</strong></span>: Linear in N if the range [first ,last ) is already sorted using comp and otherwise N logN, where N is il.first() - il.end(). </p>
</li>
<li class="listitem"><pre class="literallayout"><a name="idp38895216-bb"></a><span class="identifier">multimap</span><span class="special">(</span><a class="link" href="ordered_range_t.html" title="Struct ordered_range_t">ordered_range_t</a><span class="special">,</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">initializer_list</span><span class="special">&lt;</span> <span class="identifier">value_type</span> <span class="special">&gt;</span> il<span class="special">,</span> 
         <span class="keyword">const</span> <span class="identifier">Compare</span> <span class="special">&amp;</span> comp <span class="special">=</span> <span class="identifier">Compare</span><span class="special">(</span><span class="special">)</span><span class="special">,</span> 
         <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span> a <span class="special">=</span> <span class="identifier">allocator_type</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span></pre></li>
<li class="listitem">
<pre class="literallayout"><a name="idp38898976-bb"></a><span class="identifier">multimap</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Copy constructs a multimap.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Linear in x.size(). </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="idp38902240-bb"></a><span class="identifier">multimap</span><span class="special">(</span><a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Move constructs a multimap. Constructs *this using x's resources.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant.</p>
<p><span class="bold"><strong>Postcondition</strong></span>: x is emptied. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="idp38906224-bb"></a><span class="identifier">multimap</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> x<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span> a<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Copy constructs a multimap.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Linear in x.size(). </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="idp38910176-bb"></a><span class="identifier">multimap</span><span class="special">(</span><a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;&amp;</span> x<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">allocator_type</span> <span class="special">&amp;</span> a<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Move constructs a multimap using the specified allocator. Constructs *this using x's resources. <span class="bold"><strong>Complexity</strong></span>: Constant if a == x.get_allocator(), linear otherwise.</p>
<p><span class="bold"><strong>Postcondition</strong></span>: x is emptied. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> <a name="idp38914784-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Makes *this a copy of x.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Linear in x.size(). </p>
</li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> <a name="idp38918624-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: this-&gt;swap(x.get()).</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> <a name="idp38922288-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">initializer_list</span><span class="special">&lt;</span> <span class="identifier">value_type</span> <span class="special">&gt;</span> il<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Assign content of il to *this. </p>
</li>
</ol></div>
</div>
<div class="refsect2">
<a name="idp163784320"></a><h3>
<a name="idp38676320-bb"></a><code class="computeroutput">multimap</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><span class="identifier">allocator_type</span> <a name="idp38676880-bb"></a><span class="identifier">get_allocator</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns a copy of the Allocator that was passed to the object's constructor.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">stored_allocator_type</span> <span class="special">&amp;</span> <a name="idp38679888-bb"></a><span class="identifier">get_stored_allocator</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns a reference to the internal allocator.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant.</p>
<p><span class="bold"><strong>Note</strong></span>: Non-standard extension. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">const</span> <span class="identifier">stored_allocator_type</span> <span class="special">&amp;</span> <a name="idp38684304-bb"></a><span class="identifier">get_stored_allocator</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns a reference to the internal allocator.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant.</p>
<p><span class="bold"><strong>Note</strong></span>: Non-standard extension. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38689008-bb"></a><span class="identifier">begin</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns an iterator to the first element contained in the container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_iterator</span> <a name="idp38692576-bb"></a><span class="identifier">begin</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns a const_iterator to the first element contained in the container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_iterator</span> <a name="idp38696432-bb"></a><span class="identifier">cbegin</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns a const_iterator to the first element contained in the container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38700288-bb"></a><span class="identifier">end</span><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns an iterator to the end of the container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_iterator</span> <a name="idp38704112-bb"></a><span class="identifier">end</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns a const_iterator to the end of the container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_iterator</span> <a name="idp38707936-bb"></a><span class="identifier">cend</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns a const_iterator to the end of the container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">reverse_iterator</span> <a name="idp38711760-bb"></a><span class="identifier">rbegin</span><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns a reverse_iterator pointing to the beginning of the reversed container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_reverse_iterator</span> <a name="idp38715616-bb"></a><span class="identifier">rbegin</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns a const_reverse_iterator pointing to the beginning of the reversed container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_reverse_iterator</span> <a name="idp38719472-bb"></a><span class="identifier">crbegin</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns a const_reverse_iterator pointing to the beginning of the reversed container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">reverse_iterator</span> <a name="idp38723328-bb"></a><span class="identifier">rend</span><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns a reverse_iterator pointing to the end of the reversed container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_reverse_iterator</span> <a name="idp38727184-bb"></a><span class="identifier">rend</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns a const_reverse_iterator pointing to the end of the reversed container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_reverse_iterator</span> <a name="idp38731040-bb"></a><span class="identifier">crend</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns a const_reverse_iterator pointing to the end of the reversed container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">bool</span> <a name="idp38734896-bb"></a><span class="identifier">empty</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns true if the container contains no elements.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">size_type</span> <a name="idp38738720-bb"></a><span class="identifier">size</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns the number of the elements contained in the container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">size_type</span> <a name="idp38742560-bb"></a><span class="identifier">max_size</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns the largest possible size of the container.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span><span class="special">...</span> Args<span class="special">&gt;</span> <span class="identifier">iterator</span> <a name="idp38746384-bb"></a><span class="identifier">emplace</span><span class="special">(</span><span class="identifier">Args</span> <span class="special">&amp;&amp;</span><span class="special">...</span> args<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Inserts an object of type T constructed with std::forward&lt;Args&gt;(args)... in the container. p is a hint pointing to where the insert should start to search.</p>
<p><span class="bold"><strong>Returns</strong></span>: An iterator pointing to the element with key equivalent to the key of x.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic in general, but amortized constant if t is inserted right before p. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">class</span><span class="special">...</span> Args<span class="special">&gt;</span> 
  <span class="identifier">iterator</span> <a name="idp38752000-bb"></a><span class="identifier">emplace_hint</span><span class="special">(</span><span class="identifier">const_iterator</span> p<span class="special">,</span> <span class="identifier">Args</span> <span class="special">&amp;&amp;</span><span class="special">...</span> args<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Inserts an object of type T constructed with std::forward&lt;Args&gt;(args)... in the container. p is a hint pointing to where the insert should start to search.</p>
<p><span class="bold"><strong>Returns</strong></span>: An iterator pointing to the element with key equivalent to the key of x.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic in general, but amortized constant if t is inserted right before p. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38758304-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Inserts x and returns the iterator pointing to the newly inserted element.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38761728-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">nonconst_value_type</span> <span class="special">&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Inserts a new value constructed from x and returns the iterator pointing to the newly inserted element.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38765200-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="identifier">nonconst_value_type</span> <span class="special">&amp;&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Inserts a new value move-constructed from x and returns the iterator pointing to the newly inserted element.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38768656-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="identifier">movable_value_type</span> <span class="special">&amp;&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Inserts a new value move-constructed from x and returns the iterator pointing to the newly inserted element.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38772112-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="identifier">const_iterator</span> p<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">value_type</span> <span class="special">&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Inserts a copy of x in the container. p is a hint pointing to where the insert should start to search.</p>
<p><span class="bold"><strong>Returns</strong></span>: An iterator pointing to the element with key equivalent to the key of x.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic in general, but amortized constant if t is inserted right before p. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38777232-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="identifier">const_iterator</span> p<span class="special">,</span> <span class="keyword">const</span> <span class="identifier">nonconst_value_type</span> <span class="special">&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Inserts a new value constructed from x in the container. p is a hint pointing to where the insert should start to search.</p>
<p><span class="bold"><strong>Returns</strong></span>: An iterator pointing to the element with key equivalent to the key of x.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic in general, but amortized constant if t is inserted right before p. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38782384-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="identifier">const_iterator</span> p<span class="special">,</span> <span class="identifier">nonconst_value_type</span> <span class="special">&amp;&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Inserts a new value move constructed from x in the container. p is a hint pointing to where the insert should start to search.</p>
<p><span class="bold"><strong>Returns</strong></span>: An iterator pointing to the element with key equivalent to the key of x.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic in general, but amortized constant if t is inserted right before p. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38787520-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="identifier">const_iterator</span> p<span class="special">,</span> <span class="identifier">movable_value_type</span> <span class="special">&amp;&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Inserts a new value move constructed from x in the container. p is a hint pointing to where the insert should start to search.</p>
<p><span class="bold"><strong>Returns</strong></span>: An iterator pointing to the element with key equivalent to the key of x.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic in general, but amortized constant if t is inserted right before p. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> InputIterator<span class="special">&gt;</span> 
  <span class="keyword">void</span> <a name="idp38792656-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="identifier">InputIterator</span> first<span class="special">,</span> <span class="identifier">InputIterator</span> last<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Requires</strong></span>: first, last are not iterators into *this.</p>
<p><span class="bold"><strong>Effects</strong></span>: inserts each element from the range [first,last) .</p>
<p><span class="bold"><strong>Complexity</strong></span>: At most N log(size()+N) (N is the distance from first to last) </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp38798512-bb"></a><span class="identifier">insert</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">initializer_list</span><span class="special">&lt;</span> <span class="identifier">value_type</span> <span class="special">&gt;</span> il<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: inserts each element from the range [il.begin(), il.end().</p>
<p><span class="bold"><strong>Complexity</strong></span>: At most N log(size()+N) (N is the distance from il.begin() to il.end()) </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38802000-bb"></a><span class="identifier">erase</span><span class="special">(</span><span class="identifier">const_iterator</span> p<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Erases the element pointed to by p.</p>
<p><span class="bold"><strong>Returns</strong></span>: Returns an iterator pointing to the element immediately following q prior to the element being erased. If no such element exists, returns end().</p>
<p><span class="bold"><strong>Complexity</strong></span>: Amortized constant time </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">size_type</span> <a name="idp38806368-bb"></a><span class="identifier">erase</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Erases all elements in the container with key equivalent to x.</p>
<p><span class="bold"><strong>Returns</strong></span>: Returns the number of erased elements.</p>
<p><span class="bold"><strong>Complexity</strong></span>: log(size()) + count(k) </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38810672-bb"></a><span class="identifier">erase</span><span class="special">(</span><span class="identifier">const_iterator</span> first<span class="special">,</span> <span class="identifier">const_iterator</span> last<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Erases all the elements in the range [first, last).</p>
<p><span class="bold"><strong>Returns</strong></span>: Returns last.</p>
<p><span class="bold"><strong>Complexity</strong></span>: log(size())+N where N is the distance from first to last. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp38815648-bb"></a><span class="identifier">swap</span><span class="special">(</span><a class="link" href="flat_multiset.html" title="Class template flat_multiset">flat_multiset</a> <span class="special">&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Swaps the contents of *this and x.</p>
<p><span class="bold"><strong>Throws</strong></span>: Nothing.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp38820160-bb"></a><span class="identifier">clear</span><span class="special">(</span><span class="special">)</span> <span class="keyword">noexcept</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: erase(a.begin(),a.end()).</p>
<p><span class="bold"><strong>Postcondition</strong></span>: size() == 0.</p>
<p><span class="bold"><strong>Complexity</strong></span>: linear in size(). </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">key_compare</span> <a name="idp38823968-bb"></a><span class="identifier">key_comp</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns the comparison object out of which a was constructed.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">value_compare</span> <a name="idp38826960-bb"></a><span class="identifier">value_comp</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns an object of value_compare constructed out of the comparison object.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38829968-bb"></a><span class="identifier">find</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Returns</strong></span>: An iterator pointing to an element with the key equivalent to x, or end() if such an element is not found.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_iterator</span> <a name="idp38833424-bb"></a><span class="identifier">find</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span> x<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Returns</strong></span>: Allocator const iterator pointing to an element with the key equivalent to x, or end() if such an element is not found.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">size_type</span> <a name="idp38837168-bb"></a><span class="identifier">count</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span> x<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Returns</strong></span>: The number of elements with key equivalent to x.</p>
<p><span class="bold"><strong>Complexity</strong></span>: log(size())+count(k) </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38840832-bb"></a><span class="identifier">lower_bound</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Returns</strong></span>: An iterator pointing to the first element with key not less than k, or a.end() if such an element is not found.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_iterator</span> <a name="idp38844288-bb"></a><span class="identifier">lower_bound</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span> x<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Returns</strong></span>: Allocator const iterator pointing to the first element with key not less than k, or a.end() if such an element is not found.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idp38848032-bb"></a><span class="identifier">upper_bound</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Returns</strong></span>: An iterator pointing to the first element with key not less than x, or end() if such an element is not found.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">const_iterator</span> <a name="idp38851488-bb"></a><span class="identifier">upper_bound</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span> x<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Returns</strong></span>: Allocator const iterator pointing to the first element with key not less than x, or end() if such an element is not found.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span> <span class="identifier">iterator</span><span class="special">,</span> <span class="identifier">iterator</span> <span class="special">&gt;</span> <a name="idp38855232-bb"></a><span class="identifier">equal_range</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span> x<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Equivalent to std::make_pair(this-&gt;lower_bound(k), this-&gt;upper_bound(k)).</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span> <span class="identifier">const_iterator</span><span class="special">,</span> <span class="identifier">const_iterator</span> <span class="special">&gt;</span> 
<a name="idp38858672-bb"></a><span class="identifier">equal_range</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">key_type</span> <span class="special">&amp;</span> x<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Equivalent to std::make_pair(this-&gt;lower_bound(k), this-&gt;upper_bound(k)).</p>
<p><span class="bold"><strong>Complexity</strong></span>: Logarithmic </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idp38862400-bb"></a><span class="identifier">rebalance</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Rebalances the tree. It's a no-op for Red-Black and AVL trees.</p>
<p><span class="bold"><strong>Complexity</strong></span>: Linear </p>
</li>
</ol></div>
</div>
<div class="refsect2">
<a name="idp164194624"></a><h3>
<a name="idp38924848-bb"></a><code class="computeroutput">multimap</code> friend functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="idp38925408-bb"></a><span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> x<span class="special">,</span> <span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> y<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns true if x and y are equal</p>
<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements in the container. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="idp38930400-bb"></a><span class="keyword">operator</span><span class="special">!=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> x<span class="special">,</span> <span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> y<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns true if x and y are unequal</p>
<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements in the container. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="idp38935392-bb"></a><span class="keyword">operator</span><span class="special">&lt;</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> x<span class="special">,</span> <span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> y<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns true if x is less than y</p>
<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements in the container. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="idp38940384-bb"></a><span class="keyword">operator</span><span class="special">&gt;</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> x<span class="special">,</span> <span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> y<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns true if x is greater than y</p>
<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements in the container. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="idp38945376-bb"></a><span class="keyword">operator</span><span class="special">&lt;=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> x<span class="special">,</span> <span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> y<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns true if x is equal or less than y</p>
<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements in the container. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="idp38950384-bb"></a><span class="keyword">operator</span><span class="special">&gt;=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> x<span class="special">,</span> <span class="keyword">const</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> y<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: Returns true if x is equal or greater than y</p>
<p><span class="bold"><strong>Complexity</strong></span>: Linear to the number of elements in the container. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">void</span> <a name="idp38955392-bb"></a><span class="identifier">swap</span><span class="special">(</span><a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> x<span class="special">,</span> <a class="link" href="multimap.html" title="Class template multimap">multimap</a> <span class="special">&amp;</span> y<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects</strong></span>: x.swap(y)</p>
<p><span class="bold"><strong>Complexity</strong></span>: Constant. </p>
</li>
</ol></div>
</div>
</div>
</div>
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        Distributed under the Boost Software License, Version 1.0. (See accompanying
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