542 lines
15 KiB
HTML
542 lines
15 KiB
HTML
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</head>
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<body>
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<div class="document" id="boost-pointer-container-library">
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<h1 class="title"><img alt="Boost" src="boost.png" /> Pointer Container Library</h1>
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<div class="section" id="class-ptr-deque">
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<h1>Class <tt class="docutils literal">ptr_deque</tt></h1>
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<p>A <tt class="docutils literal">ptr_deque<T></tt> is a pointer container that uses an underlying <tt class="docutils literal">std:deque<void*></tt>
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to store the pointers.</p>
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<p><strong>Hierarchy:</strong></p>
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<ul class="simple">
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<li><a class="reference external" href="reversible_ptr_container.html">reversible_ptr_container</a><ul>
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<li><a class="reference external" href="ptr_sequence_adapter.html">ptr_sequence_adapter</a><ul>
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<li><a class="reference external" href="ptr_vector.html">ptr_vector</a></li>
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<li><a class="reference external" href="ptr_list.html">ptr_list</a></li>
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<li><tt class="docutils literal">ptr_deque</tt></li>
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<li><a class="reference external" href="ptr_array.html">ptr_array</a></li>
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</ul>
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</li>
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</ul>
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</li>
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</ul>
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<p><strong>Navigate:</strong></p>
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<ul class="simple">
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<li><a class="reference external" href="ptr_container.html">home</a></li>
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<li><a class="reference external" href="reference.html">reference</a></li>
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</ul>
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<p><strong>Synopsis:</strong></p>
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<pre class="literal-block">
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namespace boost
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{
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template
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<
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class T,
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class CloneAllocator = heap_clone_allocator
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class Allocator = std::allocator<void*>
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>
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class ptr_deque : public ptr_sequence_adapter
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<
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T,
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std::deque<void*,Allocator>,
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CloneAllocator
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>
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{
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public: // <a class="reference internal" href="#element-access">element access</a>
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T& operator[]( size_type n );
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const T& operator[]( size_type n ) const;
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T& at( size_type n );
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const T& at( size_type n ) const;
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public: // <a class="reference internal" href="#modifiers">modifiers</a>
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void push_front( T* x );
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template< class U >
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void push_front( <a class="reference external" href="compatible_smart_ptr.html"><em>compatible-smart-ptr</em></a><U> x );
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auto_type pop_front();
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public: // <a class="reference internal" href="#pointer-container-requirements">pointer container requirements</a>
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auto_type replace( size_type idx, T* x );
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template< class U >
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auto_type replace( size_type idx, <a class="reference external" href="compatible_smart_ptr.html"><em>compatible-smart-ptr</em></a><U> x );
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bool is_null( size_type idx ) const;
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};
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} // namespace 'boost'
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</pre>
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</div>
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<div class="section" id="semantics">
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<h1>Semantics</h1>
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<div class="section" id="semantics-modifiers">
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<span id="modifiers"></span><h2>Semantics: modifiers</h2>
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<ul>
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<li><p class="first"><tt class="docutils literal">void push_front( T* x );</tt></p>
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<blockquote>
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<ul class="simple">
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<li>Requirements: <tt class="docutils literal">x != 0</tt></li>
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<li>Effects: Inserts the pointer into container and takes ownership of it</li>
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<li>Throws: <tt class="docutils literal">bad_pointer</tt> if <tt class="docutils literal">x == 0</tt></li>
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<li>Exception safety: Strong guarantee</li>
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</ul>
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</blockquote>
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</li>
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<li><p class="first"><tt class="docutils literal">template< class U > void push_front( <span class="pre"><a class="reference external" href="compatible_smart_ptr.html"><em>compatible-smart-ptr</em></a><U></span> x );</tt></p>
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<blockquote>
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<ul class="simple">
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<li>Effects: <tt class="docutils literal">push_front( x.release() );</tt></li>
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</ul>
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</blockquote>
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</li>
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</ul>
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<!-- - ``void push_front( const T& x );``
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- Effects: push_front( allocate_clone( x ) );
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- Exception safety: Strong guarantee -->
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<ul>
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<li><p class="first"><tt class="docutils literal">auto_type <span class="pre">pop_front():</span></tt></p>
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<blockquote>
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<ul class="simple">
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<li>Requirements:<tt class="docutils literal">not empty()</tt></li>
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<li>Effects: Removes the first element in the container</li>
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<li>Postconditions: <tt class="docutils literal">size()</tt> is one less</li>
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<li>Throws: <tt class="docutils literal">bad_ptr_container_operation</tt> if <tt class="docutils literal">empty() == true</tt></li>
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<li>Exception safety: Strong guarantee</li>
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</ul>
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</blockquote>
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</li>
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</ul>
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</div>
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<div class="section" id="semantics-element-access">
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<span id="element-access"></span><h2>Semantics: element access</h2>
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<ul>
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<li><p class="first"><tt class="docutils literal">T& <span class="pre">operator[](</span> size_type n );</tt></p>
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</li>
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<li><p class="first"><tt class="docutils literal">const T& <span class="pre">operator[](</span> size_type n ) const;</tt></p>
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<blockquote>
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<ul class="simple">
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<li>Requirements: <tt class="docutils literal">n < size()</tt></li>
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<li>Effects: Returns a reference to the <tt class="docutils literal">n</tt>'th element</li>
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<li>Throws: Nothing</li>
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</ul>
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</blockquote>
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</li>
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<li><p class="first"><tt class="docutils literal">T& at( size_type n );</tt></p>
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</li>
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<li><p class="first"><tt class="docutils literal">const T& at( size_type n ) const;</tt></p>
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<blockquote>
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<ul class="simple">
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<li>Requirements: <tt class="docutils literal">n < size()</tt></li>
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<li>Effects: Returns a reference to the <tt class="docutils literal">n</tt>'th element</li>
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<li>Throws: <tt class="docutils literal">bad_index</tt> if <tt class="docutils literal">n >=size()</tt></li>
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</ul>
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</blockquote>
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</li>
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</ul>
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</div>
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<div class="section" id="semantics-pointer-container-requirements">
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<span id="pointer-container-requirements"></span><h2>Semantics: pointer container requirements</h2>
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<ul>
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<li><p class="first"><tt class="docutils literal">auto_type replace( size_type idx, T* x );</tt></p>
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<blockquote>
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<ul class="simple">
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<li>Requirements: `` x != 0 and idx < size()``</li>
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<li>Effects: returns the object indexed by <tt class="docutils literal">idx</tt> and replaces it with <tt class="docutils literal">x</tt>.</li>
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<li>Throws: <tt class="docutils literal">bad_index</tt> if <tt class="docutils literal">idx >= size()</tt> and <tt class="docutils literal">bad_pointer</tt> if <tt class="docutils literal">x == 0</tt>.</li>
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<li>Exception safety: Strong guarantee</li>
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</ul>
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</blockquote>
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</li>
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<li><p class="first"><tt class="docutils literal">template< class U > auto_type replace( size_type idx, <span class="pre"><a class="reference external" href="compatible_smart_ptr.html"><em>compatible-smart-ptr</em></a><U></span> x );</tt></p>
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<blockquote>
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<ul class="simple">
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<li>Effects: <tt class="docutils literal">return replace( idx, x.release() );</tt></li>
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</ul>
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</blockquote>
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</li>
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<li><p class="first"><tt class="docutils literal">bool is_null( size_type idx ) const;</tt></p>
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<blockquote>
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<ul class="simple">
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<li>Requirements: <tt class="docutils literal">idx < size()</tt></li>
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<li>Effects: returns whether the pointer at index <tt class="docutils literal">idx</tt> is null</li>
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<li>Exception safety: Nothrow guarantee</li>
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</ul>
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</blockquote>
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</li>
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</ul>
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<hr><table class="docutils field-list" frame="void" rules="none">
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<col class="field-name" />
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<col class="field-body" />
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<tbody valign="top">
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<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 external" href="http://www.boost.org/LICENSE_1_0.txt">LICENSE_1_0.txt</a>).</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div>
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</div>
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</body>
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</html>
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