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<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-ptr-deque" name="class-ptr-deque">Class <tt class="docutils literal"><span class="pre">ptr_deque</span></tt></a></h1>
<p>A <tt class="docutils literal"><span class="pre">ptr_deque<T></span></tt> is a pointer container that uses an underlying <tt class="docutils literal"><span class="pre">std:deque<void*></span></tt>
to store the pointers.</p>
<p><strong>Hierarchy:</strong></p>
<ul class="simple">
<li><a class="reference" href="reversible_ptr_container.html">reversible_ptr_container</a><ul>
<li><a class="reference" href="ptr_sequence_adapter.html">ptr_sequence_adapter</a><ul>
<li><a class="reference" href="ptr_vector.html">ptr_vector</a></li>
<li><a class="reference" href="ptr_list.html">ptr_list</a></li>
<li><tt class="docutils literal"><span class="pre">ptr_deque</span></tt></li>
<li><a class="reference" href="ptr_array.html">ptr_array</a></li>
</ul>
</li>
</ul>
</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
<
class T,
class CloneAllocator = heap_clone_allocator
class Allocator = std::allocator<void*>
>
class ptr_deque : public ptr_sequence_adapter
<
T,
std::deque<void*,Allocator>,
CloneAllocator
>
{
public: // <a class="reference" href="#element-access">element access</a>
T& operator[]( size_type n );
const T& operator[]( size_type n ) const;
T& at( size_type n );
const T& at( size_type n ) const;
public: // <a class="reference" href="#modifiers">modifiers</a>
void push_front( T* x );
template< class U >
void push_front( std::auto_ptr<U> x );
auto_type pop_front();
public: // <a class="reference" href="#pointer-container-requirements">pointer container requirements</a>
auto_type replace( size_type idx, T* x );
template< class U >
auto_type replace( size_type idx, std::auto_ptr<U> x );
bool is_null( size_type idx ) const;
};
} // namespace 'boost'
</pre>
</div>
<div class="section">
<h1><a id="semantics" name="semantics">Semantics</a></h1>
<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">void</span> <span class="pre">push_front(</span> <span class="pre">T*</span> <span class="pre">x</span> <span class="pre">);</span></tt></p>
<blockquote>
<ul class="simple">
<li>Requirements: <tt class="docutils literal"><span class="pre">x</span> <span class="pre">!=</span> <span class="pre">0</span></tt></li>
<li>Effects: Inserts the pointer into container and takes ownership of it</li>
<li>Throws: <tt class="docutils literal"><span class="pre">bad_pointer</span></tt> if <tt class="docutils literal"><span class="pre">x</span> <span class="pre">==</span> <span class="pre">0</span></tt></li>
<li>Exception safety: Strong guarantee</li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">template<</span> <span class="pre">class</span> <span class="pre">U</span> <span class="pre">></span> <span class="pre">void</span> <span class="pre">push_front(</span> <span class="pre">std::auto_ptr<U></span> <span class="pre">x</span> <span class="pre">);</span></tt></p>
<blockquote>
<ul class="simple">
<li>Effects: <tt class="docutils literal"><span class="pre">push_front(</span> <span class="pre">x.release()</span> <span class="pre">);</span></tt></li>
</ul>
</blockquote>
</li>
</ul>
<!-- - ``void push_front( const T& x );``
- Effects: push_front( allocate_clone( x ) );
- Exception safety: Strong guarantee -->
<ul>
<li><p class="first"><tt class="docutils literal"><span class="pre">auto_type</span> <span class="pre">pop_front():</span></tt></p>
<blockquote>
<ul class="simple">
<li>Requirements:<tt class="docutils literal"><span class="pre">not</span> <span class="pre">empty()</span></tt></li>
<li>Effects: Removes the first element in the container</li>
<li>Postconditions: <tt class="docutils literal"><span class="pre">size()</span></tt> is one less</li>
<li>Throws: <tt class="docutils literal"><span class="pre">bad_ptr_container_operation</span></tt> if <tt class="docutils literal"><span class="pre">empty()</span> <span class="pre">==</span> <span class="pre">true</span></tt></li>
<li>Exception safety: Strong guarantee</li>
</ul>
</blockquote>
</li>
</ul>
</div>
<div class="section">
<h2><a id="semantics-element-access" name="semantics-element-access"><span id="element-access"></span>Semantics: element access</a></h2>
<ul>
<li><p class="first"><tt class="docutils literal"><span class="pre">T&</span> <span class="pre">operator[](</span> <span class="pre">size_type</span> <span class="pre">n</span> <span class="pre">);</span></tt></p>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">const</span> <span class="pre">T&</span> <span class="pre">operator[](</span> <span class="pre">size_type</span> <span class="pre">n</span> <span class="pre">)</span> <span class="pre">const;</span></tt></p>
<blockquote>
<ul class="simple">
<li>Requirements: <tt class="docutils literal"><span class="pre">n</span> <span class="pre"><</span> <span class="pre">size()</span></tt></li>
<li>Effects: Returns a reference to the <tt class="docutils literal"><span class="pre">n</span></tt>'th element</li>
<li>Throws: Nothing</li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">T&</span> <span class="pre">at(</span> <span class="pre">size_type</span> <span class="pre">n</span> <span class="pre">);</span></tt></p>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">const</span> <span class="pre">T&</span> <span class="pre">at(</span> <span class="pre">size_type</span> <span class="pre">n</span> <span class="pre">)</span> <span class="pre">const;</span></tt></p>
<blockquote>
<ul class="simple">
<li>Requirements: <tt class="docutils literal"><span class="pre">n</span> <span class="pre"><</span> <span class="pre">size()</span></tt></li>
<li>Effects: Returns a reference to the <tt class="docutils literal"><span class="pre">n</span></tt>'th element</li>
<li>Throws: <tt class="docutils literal"><span class="pre">bad_index</span></tt> if <tt class="docutils literal"><span class="pre">n</span> <span class="pre">>=size()</span></tt></li>
</ul>
</blockquote>
</li>
</ul>
</div>
<div class="section">
<h2><a id="semantics-pointer-container-requirements" name="semantics-pointer-container-requirements"><span id="pointer-container-requirements"></span>Semantics: pointer container requirements</a></h2>
<ul>
<li><p class="first"><tt class="docutils literal"><span class="pre">auto_type</span> <span class="pre">replace(</span> <span class="pre">size_type</span> <span class="pre">idx,</span> <span class="pre">T*</span> <span class="pre">x</span> <span class="pre">);</span></tt></p>
<blockquote>
<ul class="simple">
<li>Requirements: `` x != 0 and idx < size()``</li>
<li>Effects: returns the object indexed by <tt class="docutils literal"><span class="pre">idx</span></tt> and replaces it with <tt class="docutils literal"><span class="pre">x</span></tt>.</li>
<li>Throws: <tt class="docutils literal"><span class="pre">bad_index</span></tt> if <tt class="docutils literal"><span class="pre">idx</span> <span class="pre">>=</span> <span class="pre">size()</span></tt> and <tt class="docutils literal"><span class="pre">bad_pointer</span></tt> if <tt class="docutils literal"><span class="pre">x</span> <span class="pre">==</span> <span class="pre">0</span></tt>.</li>
<li>Exception safety: Strong guarantee</li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">template<</span> <span class="pre">class</span> <span class="pre">U</span> <span class="pre">></span> <span class="pre">auto_type</span> <span class="pre">replace(</span> <span class="pre">size_type</span> <span class="pre">idx,</span> <span class="pre">std::auto_ptr<U></span> <span class="pre">x</span> <span class="pre">);</span></tt></p>
<blockquote>
<ul class="simple">
<li>Effects: <tt class="docutils literal"><span class="pre">return</span> <span class="pre">replace(</span> <span class="pre">idx,</span> <span class="pre">x.release()</span> <span class="pre">);</span></tt></li>
</ul>
</blockquote>
</li>
<li><p class="first"><tt class="docutils literal"><span class="pre">bool</span> <span class="pre">is_null(</span> <span class="pre">size_type</span> <span class="pre">idx</span> <span class="pre">)</span> <span class="pre">const;</span></tt></p>
<blockquote>
<ul class="simple">
<li>Requirements: <tt class="docutils literal"><span class="pre">idx</span> <span class="pre"><</span> <span class="pre">size()</span></tt></li>
<li>Effects: returns whether the pointer at index <tt class="docutils literal"><span class="pre">idx</span></tt> is null</li>
<li>Exception safety: Nothrow guarantee</li>
</ul>
</blockquote>
</li>
</ul>
<hr><table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<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>
</tr>
</tbody>
</table>
</div>
</div>
</div>
</body>
</html>
|
