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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-ptr-vector" name="class-ptr-vector">Class <tt class="docutils literal"><span class="pre">ptr_vector</span></tt></a></h1> |
| <p>A <tt class="docutils literal"><span class="pre">ptr_vector<T></span></tt> is a pointer container that uses an underlying <tt class="docutils literal"><span class="pre">std::vector<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><tt class="docutils literal"><span class="pre">ptr_vector</span></tt></li> |
| <li><a class="reference" href="ptr_list.html">ptr_list</a></li> |
| <li><a class="reference" href="ptr_deque.html">ptr_deque</a></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_vector : public ptr_sequence_adapter |
| < |
| T, |
| std::vector<void*,Allocator>, |
| CloneAllocator |
| > |
| { |
| public: // <a class="reference" href="#construction">construction</a> |
| explicit ptr_vector( size_type to_reserve ); |
| |
| public: // <a class="reference" href="#capacity">capacity</a> |
| size_type capacity() const; |
| void reserve( size_type n ); |
| |
| 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="#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; |
| |
| public: // <a class="reference" href="#c-array-support">C-array support</a> |
| void transfer( iterator before, T** from, size_type size, bool delete_from = true ); |
| T** c_array(); |
| |
| }; |
| |
| } // namespace 'boost' |
| </pre> |
| </div> |
| <div class="section"> |
| <h1><a id="semantics" name="semantics">Semantics</a></h1> |
| <div class="section"> |
| <h2><a id="semantics-construction" name="semantics-construction"><span id="construction"></span>Semantics: construction</a></h2> |
| <ul> |
| <li><p class="first"><tt class="docutils literal"><span class="pre">explicit</span> <span class="pre">ptr_vector(</span> <span class="pre">size_type</span> <span class="pre">to_reserve</span> <span class="pre">);</span></tt></p> |
| <blockquote> |
| <ul class="simple"> |
| <li>constructs an empty vector with a buffer |
| of size least <tt class="docutils literal"><span class="pre">to_reserve</span></tt></li> |
| </ul> |
| </blockquote> |
| </li> |
| </ul> |
| </div> |
| <div class="section"> |
| <h2><a id="semantics-capacity" name="semantics-capacity"><span id="capacity"></span>Semantics: capacity</a></h2> |
| <ul> |
| <li><p class="first"><tt class="docutils literal"><span class="pre">size_type</span> <span class="pre">capacity()</span> <span class="pre">const;</span></tt></p> |
| <blockquote> |
| <ul class="simple"> |
| <li>Effects: Returns the size of the allocated buffer</li> |
| <li>Throws: Nothing</li> |
| </ul> |
| </blockquote> |
| </li> |
| <li><p class="first"><tt class="docutils literal"><span class="pre">void</span> <span class="pre">reserve(</span> <span class="pre">size_type</span> <span class="pre">n</span> <span class="pre">);</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">max_size()</span></tt></li> |
| <li>Effects: Expands the allocated buffer</li> |
| <li>Postcondition: <tt class="docutils literal"><span class="pre">capacity()</span> <span class="pre">>=</span> <span class="pre">n</span></tt></li> |
| <li>Throws: <tt class="docutils literal"><span class="pre">std::length_error()</span></tt> if <tt class="docutils literal"><span class="pre">n</span> <span class="pre">></span> <span class="pre">max_size()</span></tt></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">>=</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> |
| </div> |
| <div class="section"> |
| <h2><a id="semantics-c-array-support" name="semantics-c-array-support"><span id="c-array-support"></span>Semantics: C-array support</a></h2> |
| <ul> |
| <li><p class="first"><tt class="docutils literal"><span class="pre">void</span> <span class="pre">transfer(</span> <span class="pre">iterator</span> <span class="pre">before,</span> <span class="pre">T**</span> <span class="pre">from,</span> <span class="pre">size_type</span> <span class="pre">size,</span> <span class="pre">bool</span> <span class="pre">delete_from</span> <span class="pre">=</span> <span class="pre">true</span> <span class="pre">);</span></tt></p> |
| <blockquote> |
| <ul class="simple"> |
| <li>Requirements: <tt class="docutils literal"><span class="pre">from</span> <span class="pre">!=</span> <span class="pre">0</span></tt></li> |
| <li>Effects: Takes ownership of the dynamic array <tt class="docutils literal"><span class="pre">from</span></tt></li> |
| <li>Exception safety: Strong guarantee if <tt class="docutils literal"><span class="pre">delete_from</span> <span class="pre">==</span> <span class="pre">true</span></tt>; if <tt class="docutils literal"><span class="pre">delete_from</span> <span class="pre">==</span> <span class="pre">false</span></tt>, |
| and an exception is thrown, the container fails to take ownership.</li> |
| <li>Remarks: Eventually calls <tt class="docutils literal"><span class="pre">delete[]</span> <span class="pre">from</span></tt> if <tt class="docutils literal"><span class="pre">delete_from</span> <span class="pre">==</span> <span class="pre">true</span></tt>.</li> |
| </ul> |
| </blockquote> |
| </li> |
| <li><p class="first"><tt class="docutils literal"><span class="pre">T**</span> <span class="pre">c_array();</span></tt></p> |
| <blockquote> |
| <ul class="simple"> |
| <li>Returns: <tt class="docutils literal"><span class="pre">0</span></tt> if the container is empty; otherwise a pointer to the first element of the stored array</li> |
| <li>Throws: Nothing</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 2004-2007. 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> |