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<body>
<div class="document" id="boost-pointer-container-library">
<h1 class="title"><img alt="Boost" src="boost.png" /> Pointer Container Library</h1>
<div class="section">
<h1><a id="class-associative-ptr-container" name="class-associative-ptr-container">Class <tt class="docutils literal"><span class="pre">associative_ptr_container</span></tt></a></h1>
<p>This section describes all the common operations for all associative
pointer containers (in addition to <tt class="docutils literal"><span class="pre">reversible_ptr_container</span></tt>).</p>
<p><strong>Hierarchy:</strong></p>
<ul class="simple">
<li><a class="reference" href="reversible_ptr_container.html">reversible_ptr_container</a><ul>
<li><tt class="docutils literal"><span class="pre">associative_ptr_container</span></tt><ul>
<li><a class="reference" href="ptr_set_adapter.html">ptr_set_adapter</a></li>
<li><a class="reference" href="ptr_multiset_adapter.html">ptr_multiset_adapter</a></li>
<li><a class="reference" href="ptr_map_adapter.html">ptr_map_adapter</a></li>
<li><a class="reference" href="ptr_multimap_adapter.html">ptr_multi_map_adapter</a><ul>
<li><a class="reference" href="ptr_set.html">ptr_set</a></li>
<li><a class="reference" href="ptr_multiset.html">ptr_multi_set</a></li>
<li><a class="reference" href="ptr_map.html">ptr_map</a></li>
<li><a class="reference" href="ptr_multimap.html">ptr_multimap</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</li>
</ul>
<p><strong>See also:</strong></p>
<ul class="simple">
<li><a class="reference" href="http://www.boost.org/libs/range/doc/utility_class.html#iter_range">iterator_range</a></li>
</ul>
<p><strong>Navigate:</strong></p>
<ul class="simple">
<li><a class="reference" href="ptr_container.html">home</a></li>
<li><a class="reference" href="reference.html">reference</a></li>
</ul>
<p><strong>Synopsis:</strong></p>
<pre class="literal-block">
namespace boost
{
    template
    &lt; 
        class Key, 
        class CloneAllocator = heap_clone_allocator 
    &gt;
    class associative_ptr_container 
    {
    public: // <a class="reference" href="#typedefs">typedefs</a>
        typedef ...   key_type;
        typedef ...   key_compare;
        typedef ...   value_compare;

    public: // <a class="reference" href="#observers">observers</a>
        key_compare    key_comp() const;
        value_compare  value_comp() const;

    public: // <a class="reference" href="#modifiers">modifiers</a>         
        template&lt; typename InputIterator &gt;
        void       insert( InputIterator first, InputIterator last );     
        template&lt; class InputRange &gt;
        void       insert( const InputRange&amp; r );
        void       erase( iterator position ); 
        size_type  erase( const key_type&amp; x );
        template&lt; class Range &gt;
        void       erase( const Range&amp; r );
        void       erase( iterator first, iterator last );

    public: // <a class="reference" href="#algorithms">algorithms</a>
        iterator                        find( const key_type&amp; x );
        const_iterator                  find( const key_type&amp; x ) const;
        size_type                       count( const key_type&amp; x ) const;              
        iterator                        lower_bound( const key_type&amp; x );                     
        const_iterator                  lower_bound( const key_type&amp; x ) const;
        iterator                        upper_bound( const key_type&amp; x );                           
        const_iterator                  upper_bound( const key_type&amp; x ) const;
        iterator_range&lt;iterator&gt;        equal_range( const key_type&amp; x );                 
        iterator_range&lt;const_iterator&gt;  equal_range( const key_type&amp; x ) const;
     
    }; //  class 'associative_ptr_container'
    
} // namespace 'boost'  
</pre>
</div>
<div class="section">
<h1><a id="semantics" name="semantics">Semantics</a></h1>
<div class="section">
<h2><a id="semantics-typedefs" name="semantics-typedefs"><span id="typedefs"></span>Semantics: typedefs</a></h2>
<ul>
<li><p class="first"><tt class="docutils literal"><span class="pre">typedef</span> <span class="pre">...</span> <span class="pre">key_type;</span></tt></p>
<blockquote>
<ul class="simple">
<li>if we are dealing with a map, then simply the key type</li>
<li>if we are dealing with a set, then the <em>indirected</em> key type, that is, 
given <tt class="docutils literal"><span class="pre">ptr_set&lt;T&gt;</span></tt>, <tt class="docutils literal"><span class="pre">key_type*</span></tt> will be <tt class="docutils literal"><span class="pre">T*</span></tt>.</li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">typedef</span> <span class="pre">...</span> <span class="pre">key_compare;</span></tt></p>
<blockquote>
<ul class="simple">
<li>comparison object type that determines the order of elements in the container</li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">typedef</span> <span class="pre">...</span> <span class="pre">value_compare;</span></tt></p>
<blockquote>
<ul class="simple">
<li>comparison object type that determines the order of elements in the container</li>
<li>if we are dealing with a map, then this comparison simply forwards to the <tt class="docutils literal"><span class="pre">key_compare</span></tt> comparison operation</li>
</ul>
</blockquote>
</li>
</ul>
</div>
<div class="section">
<h2><a id="semantics-observers" name="semantics-observers"><span id="observers"></span>Semantics: observers</a></h2>
<ul>
<li><p class="first"><tt class="docutils literal"><span class="pre">key_compare</span> <span class="pre">key_comp()</span> <span class="pre">const;</span></tt></p>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">value_compare</span> <span class="pre">value_comp()</span> <span class="pre">const;</span></tt></p>
<blockquote>
<ul class="simple">
<li>returns copies of objects used to determine the order of elements</li>
</ul>
</blockquote>
</li>
</ul>
</div>
<div class="section">
<h2><a id="semantics-modifiers" name="semantics-modifiers"><span id="modifiers"></span>Semantics: modifiers</a></h2>
<ul>
<li><p class="first"><tt class="docutils literal"><span class="pre">template&lt;</span> <span class="pre">typename</span> <span class="pre">InputIterator</span> <span class="pre">&gt;</span>
<span class="pre">void</span> <span class="pre">insert(</span> <span class="pre">InputIterator</span> <span class="pre">first,</span> <span class="pre">InputIterator</span> <span class="pre">last</span> <span class="pre">);</span></tt></p>
<blockquote>
<ul class="simple">
<li>Requirements: <tt class="docutils literal"><span class="pre">[first,last)</span></tt> is a valid range</li>
<li>Effects: Inserts a cloned range</li>
<li>Exception safety: Basic guarantee</li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">template&lt;</span> <span class="pre">class</span> <span class="pre">InputRange</span> <span class="pre">&gt;</span>
<span class="pre">void</span> <span class="pre">insert(</span> <span class="pre">const</span> <span class="pre">InputRange&amp;</span> <span class="pre">r</span> <span class="pre">);</span></tt></p>
<blockquote>
<ul class="simple">
<li>Effects: <tt class="docutils literal"><span class="pre">insert(</span> <span class="pre">boost::begin(r),</span> <span class="pre">boost::end(r)</span> <span class="pre">);</span></tt></li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">void</span> <span class="pre">erase(</span> <span class="pre">iterator</span> <span class="pre">position</span> <span class="pre">);</span></tt></p>
<blockquote>
<ul class="simple">
<li>Requirements: <tt class="docutils literal"><span class="pre">position</span></tt> is a valid iterator from the container</li>
<li>Effects: Removes the element defined by <tt class="docutils literal"><span class="pre">position</span></tt>.</li>
<li>Throws: Nothing</li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">size_type</span> <span class="pre">erase(</span> <span class="pre">const</span> <span class="pre">key_type&amp;</span> <span class="pre">x</span> <span class="pre">);</span></tt></p>
<blockquote>
<ul class="simple">
<li>Effects: Removes all the elements in the container with a key equivalent to <tt class="docutils literal"><span class="pre">x</span></tt> and returns the number of erased elements.</li>
<li>Throws: Nothing</li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">void</span> <span class="pre">erase(</span> <span class="pre">iterator</span> <span class="pre">first,</span> <span class="pre">iterator</span> <span class="pre">last</span> <span class="pre">);</span></tt></p>
<blockquote>
<ul class="simple">
<li>Requirements: <tt class="docutils literal"><span class="pre">[first,last)</span></tt> is a valid range</li>
<li>Effects: Removes the range of elements defined by <tt class="docutils literal"><span class="pre">[first,last)</span></tt>.</li>
<li>Throws: Nothing</li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">template&lt;</span> <span class="pre">class</span> <span class="pre">Range</span> <span class="pre">&gt;</span> <span class="pre">void</span> <span class="pre">erase(</span> <span class="pre">const</span> <span class="pre">Range&amp;</span> <span class="pre">r</span> <span class="pre">);</span></tt></p>
<blockquote>
<ul class="simple">
<li>Effects: <tt class="docutils literal"><span class="pre">erase(</span> <span class="pre">boost::begin(r),</span> <span class="pre">boost::end(r)</span> <span class="pre">);</span></tt></li>
</ul>
</blockquote>
</li>
</ul>
</div>
<div class="section">
<h2><a id="semantics-algorithms" name="semantics-algorithms"><span id="algorithms"></span>Semantics: algorithms</a></h2>
<ul>
<li><p class="first"><tt class="docutils literal"><span class="pre">iterator</span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <span class="pre">find(</span> <span class="pre">const</span> <span class="pre">Key&amp;</span> <span class="pre">x</span> <span class="pre">);</span></tt></p>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">const_iterator</span> <span class="pre">find(</span> <span class="pre">const</span> <span class="pre">Key&amp;</span> <span class="pre">x</span> <span class="pre">)</span> <span class="pre">const;</span></tt></p>
<blockquote>
<ul class="simple">
<li>Effects: Searches for the key and returns <tt class="docutils literal"><span class="pre">end()</span></tt> on failure.</li>
<li>Complexity: Logarithmic</li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">size_type</span> <span class="pre">count(</span> <span class="pre">const</span> <span class="pre">Key&amp;</span> <span class="pre">x</span> <span class="pre">)</span> <span class="pre">const;</span></tt></p>
<blockquote>
<ul class="simple">
<li>Effects: Counts the elements with a key equivalent to <tt class="docutils literal"><span class="pre">x</span></tt></li>
<li>Complexity: Logarithmic</li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">iterator</span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <span class="pre">lower_bound(</span> <span class="pre">const</span> <span class="pre">Key&amp;</span> <span class="pre">x</span> <span class="pre">);</span></tt></p>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">const_iterator</span> <span class="pre">lower_bound(</span> <span class="pre">const</span> <span class="pre">Key&amp;</span> <span class="pre">x</span> <span class="pre">)</span> <span class="pre">const;</span></tt></p>
<blockquote>
<ul class="simple">
<li>Effects: Returns an iterator pointing to the first element with a key not less than <tt class="docutils literal"><span class="pre">x</span></tt></li>
<li>Complexity: Logarithmic</li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">iterator</span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <span class="pre">upper_bound(</span> <span class="pre">const</span> <span class="pre">Key&amp;</span> <span class="pre">x</span> <span class="pre">);</span></tt></p>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">const_iterator</span> <span class="pre">upper_bound(</span> <span class="pre">const</span> <span class="pre">Key&amp;</span> <span class="pre">x</span> <span class="pre">)</span> <span class="pre">const;</span></tt></p>
<blockquote>
<ul class="simple">
<li>Effects: Returns an iterator pointing to the first element with a key greater than <tt class="docutils literal"><span class="pre">x</span></tt></li>
<li>Complexity: Logarithmic</li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">iterator_range&lt;iterator&gt;</span>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <span class="pre">equal_range(</span> <span class="pre">const</span> <span class="pre">Key&amp;</span> <span class="pre">x</span> <span class="pre">);</span></tt></p>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">iterator_range&lt;const_iterator&gt;</span> <span class="pre">equal_range(</span> <span class="pre">const</span> <span class="pre">Key&amp;</span> <span class="pre">x</span> <span class="pre">)</span> <span class="pre">const;</span></tt></p>
<blockquote>
<ul class="simple">
<li>Effects: <tt class="docutils literal"><span class="pre">return</span> <span class="pre">boost::make_iterator_range(</span> <span class="pre">lower_bound(</span> <span class="pre">x</span> <span class="pre">),</span> <span class="pre">upper_bound(</span> <span class="pre">x</span> <span class="pre">)</span> <span class="pre">);</span></tt></li>
<li>Complexity: Logarithmic</li>
</ul>
</blockquote>
</li>
</ul>
<!-- - ``reference       at( const key_type& key );``
- ``const_reference at( const key_type& key ) const;`` 

- Requirements: the key exists

- Effects: returns the object with key ``key``

- Throws: ``bad_ptr_container_operation`` if the key does not exist                                  -->
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<tbody valign="top">
<tr class="field"><th class="field-name">Copyright:</th><td class="field-body">Thorsten Ottosen 2004-2006. Use, modification and distribution is subject to the Boost Software License, Version 1.0 (see <a class="reference" href="http://www.boost.org/LICENSE_1_0.txt">LICENSE_1_0.txt</a>).</td>
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