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<title>Class template priority_queue</title>
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<a name="boost.heap.priority_queue"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle">Class template priority_queue</span></h2>
<p>boost::heap::priority_queue &#8212; priority queue, based on stl heap functions </p>
</div>
<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="../../heap/reference.html#header.boost.heap.priority_queue_hpp" title="Header &lt;boost/heap/priority_queue.hpp&gt;">boost/heap/priority_queue.hpp</a>&gt;

</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> T<span class="special">,</span> <span class="keyword">class</span><span class="special">...</span> Options<span class="special">&gt;</span> 
<span class="keyword">class</span> <a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
  <span class="comment">// <a class="link" href="priority_queue.html#boost.heap.priority_queuetypes">types</a></span>
  <span class="keyword">typedef</span> <span class="identifier">T</span>                                       <a name="boost.heap.priority_queue.value_type"></a><span class="identifier">value_type</span><span class="special">;</span>     
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">size_type</span>       <a name="boost.heap.priority_queue.size_type"></a><span class="identifier">size_type</span><span class="special">;</span>      
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">difference_type</span> <a name="boost.heap.priority_queue.difference_type"></a><span class="identifier">difference_type</span><span class="special">;</span>
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">value_compare</span>   <a name="boost.heap.priority_queue.value_compare"></a><span class="identifier">value_compare</span><span class="special">;</span>  
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">allocator_type</span>  <a name="boost.heap.priority_queue.allocator_type"></a><span class="identifier">allocator_type</span><span class="special">;</span> 
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">reference</span>       <a name="boost.heap.priority_queue.reference"></a><span class="identifier">reference</span><span class="special">;</span>      
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">const_reference</span> <a name="boost.heap.priority_queue.const_reference"></a><span class="identifier">const_reference</span><span class="special">;</span>
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">pointer</span>         <a name="boost.heap.priority_queue.pointer"></a><span class="identifier">pointer</span><span class="special">;</span>        
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">const_pointer</span>   <a name="boost.heap.priority_queue.const_pointer"></a><span class="identifier">const_pointer</span><span class="special">;</span>  
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">iterator</span>        <a class="link" href="priority_queue.html#boost.heap.priority_queue.iterator"><span class="identifier">iterator</span></a><span class="special">;</span>       
  <span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">const_iterator</span>  <a name="boost.heap.priority_queue.const_iterator"></a><span class="identifier">const_iterator</span><span class="special">;</span> 

  <span class="comment">// <a class="link" href="priority_queue.html#boost.heap.priority_queueconstruct-copy-destruct">construct/copy/destruct</a></span>
  <span class="keyword">explicit</span> <a class="link" href="priority_queue.html#idm45507101634000-bb"><span class="identifier">priority_queue</span></a><span class="special">(</span><span class="identifier">value_compare</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="special">=</span> <span class="identifier">value_compare</span><span class="special">(</span><span class="special">)</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="priority_queue.html#idm45507101630624-bb"><span class="identifier">priority_queue</span></a><span class="special">(</span><a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="priority_queue.html#idm45507101627568-bb"><span class="identifier">priority_queue</span></a><span class="special">(</span><a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="special">&amp;&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="special">&amp;</span> <a class="link" href="priority_queue.html#idm45507101623648-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="special">&amp;&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="special">&amp;</span> <a class="link" href="priority_queue.html#idm45507101619152-bb"><span class="keyword">operator</span><span class="special">=</span></a><span class="special">(</span><a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>

  <span class="comment">// <a class="link" href="priority_queue.html#idm45507105602576-bb">public member functions</a></span>
  <span class="keyword">bool</span> <a class="link" href="priority_queue.html#idm45507105602016-bb"><span class="identifier">empty</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">size_type</span> <a class="link" href="priority_queue.html#idm45507105598416-bb"><span class="identifier">size</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">size_type</span> <a class="link" href="priority_queue.html#idm45507105594816-bb"><span class="identifier">max_size</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="priority_queue.html#idm45507105591216-bb"><span class="identifier">clear</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">allocator_type</span> <a class="link" href="priority_queue.html#idm45507105587888-bb"><span class="identifier">get_allocator</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">const_reference</span> <a class="link" href="priority_queue.html#idm45507105584256-bb"><span class="identifier">top</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="priority_queue.html#idm45507105580656-bb"><span class="identifier">push</span></a><span class="special">(</span><span class="identifier">value_type</span> <span class="keyword">const</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">class</span><span class="special">...</span> Args<span class="special">&gt;</span> <span class="keyword">void</span> <a class="link" href="priority_queue.html#idm45507128668064-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">void</span> <a class="link" href="priority_queue.html#idm45507128663520-bb"><span class="identifier">pop</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="priority_queue.html#idm45507128660224-bb"><span class="identifier">swap</span></a><span class="special">(</span><a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="priority_queue.html#idm45507128656560-bb"><span class="identifier">begin</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="identifier">iterator</span> <a class="link" href="priority_queue.html#idm45507128652960-bb"><span class="identifier">end</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
  <span class="keyword">void</span> <a class="link" href="priority_queue.html#idm45507128649360-bb"><span class="identifier">reserve</span></a><span class="special">(</span><span class="identifier">size_type</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">value_compare</span> <span class="keyword">const</span> <span class="special">&amp;</span> <a class="link" href="priority_queue.html#idm45507128645184-bb"><span class="identifier">value_comp</span></a><span class="special">(</span><span class="keyword">void</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">typename</span> HeapType<span class="special">&gt;</span> <span class="keyword">bool</span> <a class="link" href="priority_queue.html#idm45507089709376-bb"><span class="keyword">operator</span><span class="special">&lt;</span></a><span class="special">(</span><span class="identifier">HeapType</span> <span class="keyword">const</span> <span class="special">&amp;</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">typename</span> HeapType<span class="special">&gt;</span> <span class="keyword">bool</span> <a class="link" href="priority_queue.html#idm45507089704464-bb"><span class="keyword">operator</span><span class="special">&gt;</span></a><span class="special">(</span><span class="identifier">HeapType</span> <span class="keyword">const</span> <span class="special">&amp;</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">typename</span> HeapType<span class="special">&gt;</span> <span class="keyword">bool</span> <a class="link" href="priority_queue.html#idm45507089699552-bb"><span class="keyword">operator</span><span class="special">&gt;=</span></a><span class="special">(</span><span class="identifier">HeapType</span> <span class="keyword">const</span> <span class="special">&amp;</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">typename</span> HeapType<span class="special">&gt;</span> <span class="keyword">bool</span> <a class="link" href="priority_queue.html#idm45507089694640-bb"><span class="keyword">operator</span><span class="special">&lt;=</span></a><span class="special">(</span><span class="identifier">HeapType</span> <span class="keyword">const</span> <span class="special">&amp;</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">typename</span> HeapType<span class="special">&gt;</span> <span class="keyword">bool</span> <a class="link" href="priority_queue.html#idm45507089689728-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="identifier">HeapType</span> <span class="keyword">const</span> <span class="special">&amp;</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">typename</span> HeapType<span class="special">&gt;</span> <span class="keyword">bool</span> <a class="link" href="priority_queue.html#idm45507101639232-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="identifier">HeapType</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>

  <span class="comment">// public data members</span>
  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">bool</span> <span class="identifier">constant_time_size</span><span class="special">;</span>
  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">bool</span> <span class="identifier">has_ordered_iterators</span><span class="special">;</span>
  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">bool</span> <span class="identifier">is_mergable</span><span class="special">;</span>
  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">bool</span> <span class="identifier">is_stable</span><span class="special">;</span>
  <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">bool</span> <span class="identifier">has_reserve</span><span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idm45555343493952"></a><h2>Description</h2>
<p>The <a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> class is a wrapper for the stl heap functions.<br>
 The template parameter T is the type to be managed by the container. The user can specify additional options and if no options are provided default options are used.</p>
<p>The container supports the following options:</p>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem"><p><code class="computeroutput">boost::heap::compare&lt;&gt;</code>, defaults to <code class="computeroutput">compare&lt;std::less&lt;T&gt;</code> &gt;</p></li>
<li class="listitem"><p><code class="computeroutput">boost::heap::stable&lt;&gt;</code>, defaults to <code class="computeroutput">stable&lt;false&gt;</code> </p></li>
<li class="listitem"><p><code class="computeroutput">boost::heap::stability_counter_type&lt;&gt;</code>, defaults to <code class="computeroutput">stability_counter_type&lt;boost::uintmax_t&gt;</code> </p></li>
<li class="listitem"><p><code class="computeroutput">boost::heap::allocator&lt;&gt;</code>, defaults to <code class="computeroutput">allocator&lt;std::allocator&lt;T&gt;</code> &gt; </p></li>
</ul></div>
<p>
</p>
<div class="refsect2">
<a name="idm45555343484192"></a><h3>
<a name="boost.heap.priority_queuetypes"></a><code class="computeroutput">priority_queue</code> 
        public
       types</h3>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem">
<p>
<span class="keyword">typedef</span> <span class="identifier">implementation_defined</span><span class="special">::</span><span class="identifier">iterator</span> <a name="boost.heap.priority_queue.iterator"></a><span class="identifier">iterator</span><span class="special">;</span></p>
<p><span class="bold"><strong>Note:</strong></span> The iterator does not traverse the priority queue in order of the priorities. </p>
</li></ol></div>
</div>
<div class="refsect2">
<a name="idm45555343476624"></a><h3>
<a name="boost.heap.priority_queueconstruct-copy-destruct"></a><code class="computeroutput">priority_queue</code> 
        public
       construct/copy/destruct</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><span class="keyword">explicit</span> <a name="idm45507101634000-bb"></a><span class="identifier">priority_queue</span><span class="special">(</span><span class="identifier">value_compare</span> <span class="keyword">const</span> <span class="special">&amp;</span> cmp <span class="special">=</span> <span class="identifier">value_compare</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 priority queue.</p>
<p><span class="bold"><strong>Complexity:</strong></span> Constant. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="idm45507101630624-bb"></a><span class="identifier">priority_queue</span><span class="special">(</span><a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="keyword">const</span> <span class="special">&amp;</span> rhs<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects:</strong></span> copy-constructs priority queue from rhs.</p>
<p><span class="bold"><strong>Complexity:</strong></span> Linear. </p>
</li>
<li class="listitem">
<pre class="literallayout"><a name="idm45507101627568-bb"></a><span class="identifier">priority_queue</span><span class="special">(</span><a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="special">&amp;&amp;</span> rhs<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects:</strong></span> C++11-style move constructor.</p>
<p><span class="bold"><strong>Complexity:</strong></span> Constant.</p>
<p><span class="bold"><strong>Note:</strong></span> Only available, if BOOST_NO_CXX11_RVALUE_REFERENCES is not defined </p>
</li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="special">&amp;</span> <a name="idm45507101623648-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="special">&amp;&amp;</span> rhs<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects:</strong></span> C++11-style move assignment.</p>
<p><span class="bold"><strong>Complexity:</strong></span> Constant.</p>
<p><span class="bold"><strong>Note:</strong></span> Only available, if BOOST_NO_CXX11_RVALUE_REFERENCES is not defined </p>
</li>
<li class="listitem">
<pre class="literallayout"><a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="special">&amp;</span> <a name="idm45507101619152-bb"></a><span class="keyword">operator</span><span class="special">=</span><span class="special">(</span><a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="keyword">const</span> <span class="special">&amp;</span> rhs<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects:</strong></span> Assigns priority queue from rhs.</p>
<p><span class="bold"><strong>Complexity:</strong></span> Linear. </p>
</li>
</ol></div>
</div>
<div class="refsect2">
<a name="idm45555343429424"></a><h3>
<a name="idm45507105602576-bb"></a><code class="computeroutput">priority_queue</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem">
<pre class="literallayout"><span class="keyword">bool</span> <a name="idm45507105602016-bb"></a><span class="identifier">empty</span><span class="special">(</span><span class="keyword">void</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 priority queue contains no elements.</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="idm45507105598416-bb"></a><span class="identifier">size</span><span class="special">(</span><span class="keyword">void</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 elements contained in the priority queue.</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="idm45507105594816-bb"></a><span class="identifier">max_size</span><span class="special">(</span><span class="keyword">void</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 maximum number of elements the priority queue can contain.</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="idm45507105591216-bb"></a><span class="identifier">clear</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects:</strong></span> Removes all elements from the priority queue.</p>
<p><span class="bold"><strong>Complexity:</strong></span> Linear. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">allocator_type</span> <a name="idm45507105587888-bb"></a><span class="identifier">get_allocator</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects:</strong></span> Returns allocator.</p>
<p><span class="bold"><strong>Complexity:</strong></span> Constant. </p>
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<pre class="literallayout"><span class="identifier">const_reference</span> <a name="idm45507105584256-bb"></a><span class="identifier">top</span><span class="special">(</span><span class="keyword">void</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_reference to the maximum element.</p>
<p><span class="bold"><strong>Complexity:</strong></span> Constant. </p>
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<pre class="literallayout"><span class="keyword">void</span> <a name="idm45507105580656-bb"></a><span class="identifier">push</span><span class="special">(</span><span class="identifier">value_type</span> <span class="keyword">const</span> <span class="special">&amp;</span> v<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects:</strong></span> Adds a new element to the priority queue.</p>
<p><span class="bold"><strong>Complexity:</strong></span> Logarithmic (amortized). Linear (worst case). </p>
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<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="keyword">void</span> <a name="idm45507128668064-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> Adds a new element to the priority queue. The element is directly constructed in-place.</p>
<p><span class="bold"><strong>Complexity:</strong></span> Logarithmic (amortized). Linear (worst case). </p>
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<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idm45507128663520-bb"></a><span class="identifier">pop</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects:</strong></span> Removes the top element from the priority queue.</p>
<p><span class="bold"><strong>Complexity:</strong></span> Logarithmic (amortized). Linear (worst case). </p>
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<li class="listitem">
<pre class="literallayout"><span class="keyword">void</span> <a name="idm45507128660224-bb"></a><span class="identifier">swap</span><span class="special">(</span><a class="link" href="priority_queue.html" title="Class template priority_queue">priority_queue</a> <span class="special">&amp;</span> rhs<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects:</strong></span> Swaps two priority queues.</p>
<p><span class="bold"><strong>Complexity:</strong></span> Constant. </p>
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<li class="listitem">
<pre class="literallayout"><span class="identifier">iterator</span> <a name="idm45507128656560-bb"></a><span class="identifier">begin</span><span class="special">(</span><span class="keyword">void</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 iterator to the first element contained in the priority queue.</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="idm45507128652960-bb"></a><span class="identifier">end</span><span class="special">(</span><span class="keyword">void</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 iterator to the end of the priority queue.</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="idm45507128649360-bb"></a><span class="identifier">reserve</span><span class="special">(</span><span class="identifier">size_type</span> element_count<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effects:</strong></span> Reserves memory for element_count elements</p>
<p><span class="bold"><strong>Complexity:</strong></span> Linear.</p>
<p><span class="bold"><strong>Node:</strong></span> Invalidates iterators </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="identifier">value_compare</span> <span class="keyword">const</span> <span class="special">&amp;</span> <a name="idm45507128645184-bb"></a><span class="identifier">value_comp</span><span class="special">(</span><span class="keyword">void</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Effect:</strong></span> Returns the value_compare object used by the priority queue </p>
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<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> HeapType<span class="special">&gt;</span> <span class="keyword">bool</span> <a name="idm45507089709376-bb"></a><span class="keyword">operator</span><span class="special">&lt;</span><span class="special">(</span><span class="identifier">HeapType</span> <span class="keyword">const</span> <span class="special">&amp;</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Returns:</strong></span> Element-wise comparison of heap data structures</p>
<p><span class="bold"><strong>Requirement:</strong></span> the <code class="computeroutput">value_compare</code> object of both heaps must match. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> HeapType<span class="special">&gt;</span> <span class="keyword">bool</span> <a name="idm45507089704464-bb"></a><span class="keyword">operator</span><span class="special">&gt;</span><span class="special">(</span><span class="identifier">HeapType</span> <span class="keyword">const</span> <span class="special">&amp;</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Returns:</strong></span> Element-wise comparison of heap data structures</p>
<p><span class="bold"><strong>Requirement:</strong></span> the <code class="computeroutput">value_compare</code> object of both heaps must match. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> HeapType<span class="special">&gt;</span> <span class="keyword">bool</span> <a name="idm45507089699552-bb"></a><span class="keyword">operator</span><span class="special">&gt;=</span><span class="special">(</span><span class="identifier">HeapType</span> <span class="keyword">const</span> <span class="special">&amp;</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Returns:</strong></span> Element-wise comparison of heap data structures</p>
<p><span class="bold"><strong>Requirement:</strong></span> the <code class="computeroutput">value_compare</code> object of both heaps must match. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> HeapType<span class="special">&gt;</span> <span class="keyword">bool</span> <a name="idm45507089694640-bb"></a><span class="keyword">operator</span><span class="special">&lt;=</span><span class="special">(</span><span class="identifier">HeapType</span> <span class="keyword">const</span> <span class="special">&amp;</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Returns:</strong></span> Element-wise comparison of heap data structures</p>
<p><span class="bold"><strong>Requirement:</strong></span> the <code class="computeroutput">value_compare</code> object of both heaps must match. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> HeapType<span class="special">&gt;</span> <span class="keyword">bool</span> <a name="idm45507089689728-bb"></a><span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><span class="identifier">HeapType</span> <span class="keyword">const</span> <span class="special">&amp;</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Equivalent comparison <span class="bold"><strong>Returns:</strong></span> True, if both heap data structures are equivalent. <p><span class="bold"><strong>Requirement:</strong></span> the <code class="computeroutput">value_compare</code> object of both heaps must match. </p>
</li>
<li class="listitem">
<pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> HeapType<span class="special">&gt;</span> <span class="keyword">bool</span> <a name="idm45507101639232-bb"></a><span class="keyword">operator</span><span class="special">!=</span><span class="special">(</span><span class="identifier">HeapType</span> <span class="keyword">const</span> <span class="special">&amp;</span> rhs<span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre>Equivalent comparison <span class="bold"><strong>Returns:</strong></span> True, if both heap data structures are not equivalent. <p><span class="bold"><strong>Requirement:</strong></span> the <code class="computeroutput">value_compare</code> object of both heaps must match. </p>
</li>
</ol></div>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2010, 2011 Tim Blechmann<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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