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- <title>Sparse Storage</title>
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- <body>
- <h1><img src="../../../../boost.png" align="middle" />Sparse Storage</h1>
- <div class="toc" id="toc"></div>
- <h2><a name="map_std"></a>Default Standard Map</h2>
- <h4>Description</h4>
- <p>The templated class <code>map_std<I, T, ALLOC></code> provides a
- wrapper for the standard library associative container
- <code>std::map</code>. The wrapper has one simple purpose. It
- allows the definition of a default template parameter (for the
- adapted array) when declaring the sparse container types.</p>
- <h4>Example</h4>
- <pre>
- #include <boost/numeric/ublas/storage_sparse.hpp>
- int main () {
- using namespace boost::numeric::ublas;
- map_std<int, double> a (3);
- for (unsigned i = 0; i < a.size (); ++ i) {
- a [i] = i;
- std::cout << a [i] << std::endl;
- }
- }
- </pre>
- <h4>Definition</h4>
- <p>Defined in the header storage_sparse.hpp.</p>
- <h4>Template parameters</h4>
- <table border="1" summary="parameters">
- <tbody>
- <tr>
- <th>Parameter</th>
- <th>Description</th>
- <th>Default</th>
- </tr>
- <tr>
- <td><code>I</code></td>
- <td>The type of index stored in the array.</td>
- <td></td>
- </tr>
- <tr>
- <td><code>T</code></td>
- <td>The type of object stored in the array.</td>
- <td></td>
- </tr>
- <tr>
- <td><code>ALLOC</code></td>
- <td>An STL Allocator</td>
- <td>std::allocator</td>
- </tr>
- </tbody>
- </table>
- <h4>Model of</h4>
- <p>Reversible Container.</p>
- <h4>Type requirements</h4>
- <p>None, except for those imposed by the requirements of Reversible
- Container.</p>
- <h4>Public base classes</h4>
- <p>std::map</p>
- <h2><a name="map_array"></a>Map Array</h2>
- <h4>Description</h4>
- <p>The templated class <code>map_array<I, T, ALLOC></code> implements a <code>std::map</code> like associative container as a sorted array. It therefore some of the Associative Container interface without having the same semantics as an std::map.
- <p>At any time the <code>map_array</code> has a capacity up to which new element can be inserted.
- If <code>insert</code> would cause the size of the <code>map_array</code> to exceeds its capactity then it is <strong>reallocated</strong>. Iterators and reference are invalidated.
- The capacity can be directly control using the <code>reserve</code> member function.
- </p>
- <h4>Example</h4>
- <pre>
- #include <boost/numeric/ublas/storage_sparse.hpp>
- int main () {
- using namespace boost::numeric::ublas;
- map_array<int, double> a (3);
- for (unsigned i = 0; i < a.size (); ++ i) {
- a [i] = i;
- std::cout << a [i] << std::endl;
- }
- }
- </pre>
- <h4>Definition</h4>
- <p>Defined in the header storage_sparse.hpp.</p>
- <h4>Template parameters</h4>
- <table border="1" summary="parameters">
- <tbody>
- <tr>
- <th>Parameter</th>
- <th>Description</th>
- <th>Default</th>
- </tr>
- <tr>
- <td><code>I</code></td>
- <td>The type of index stored in the array.</td>
- <td></td>
- </tr>
- <tr>
- <td><code>T</code></td>
- <td>The type of object stored in the array.</td>
- <td></td>
- </tr>
- <tr>
- <td><code>ALLOC</code></td>
- <td>An STL Allocator</td>
- <td>std::allocator</td>
- </tr>
- </tbody>
- </table>
- <h4>Model of</h4>
- <p>Reversible Container.</p>
- <h4>Type requirements</h4>
- <p>None, except for those imposed by the requirements of Reversible
- Container.</p>
- <h4>Public base classes</h4>
- <p>None.</p>
- <h4>Members</h4>
- <table border="1" summary="members">
- <tbody>
- <tr>
- <th>Member</th>
- <th>Description</th>
- </tr>
- <tr>
- <td><code>map_array (ALLOC &a = ALLOC())</code></td>
- <td>Allocates a <code>map_array</code> that holds at most zero
- elements.</td>
- </tr>
- <tr>
- <td><code>map_array (const map_array &c)</code></td>
- <td>The copy constructor.</td>
- </tr>
- <tr>
- <td><code>~map_array ()</code></td>
- <td>Deallocates the <code>map_array</code> itself.</td>
- </tr>
- <tr>
- <td><code>void reserve (size_type capacity)</code></td>
- <td>
- Changes the<code>map_array</code> capacity. It can hold at most<code>capacity</code> elements without reallocation. The capacity can be reduced such that <code>capacity >= size()</code>. The content of the<code>map_array</code> is preserved.</td>
- </tr>
- <tr>
- <td><code>size_type size () const</code></td>
- <td>Returns the size of the <code>map_array</code>.</td>
- </tr>
- <tr>
- <td><code>size_type size () const</code></td>
- <td>Returns the capacity of the <code>map_array</code>.</td>
- </tr>
- <tr>
- <td><code>data_reference operator [] (index_type i)</code></td>
- <td>Returns a reference of the element that is associated with a
- particular index. If the <code>map_array</code> does not already
- contain such an element, <code>operator[]</code> inserts the
- default <code>T ()</code>.</td>
- </tr>
- <tr>
- <td><code>map_array &operator = (const map_array
- &a)</code></td>
- <td>The assignment operator.</td>
- </tr>
- <tr>
- <td><code>map_array &assign_temporary (map_array
- &a)</code></td>
- <td>Assigns a temporary. May change the array <code>a</code>.</td>
- </tr>
- <tr>
- <td><code>void swap (map_array &a)</code></td>
- <td>Swaps the contents of the arrays.</td>
- </tr>
- <tr>
- <td><code>std::pair<iterator, bool> insert (const value_type
- &p)</code></td>
- <td>Inserts <code>p</code> into the array. The second part of the return value is <code>true</code>
- if <code>p</code> was inserted and <code>false</code> if was not inserted because it was aleady
- present.</td>
- </tr>
- <tr>
- <td><code>iterator insert (iterator it, const value_type
- &p)</code></td>
- <td>Inserts <code>p</code> into the array, using <code>it</code> as
- a hint to where it will be inserted.</td>
- </tr>
- <tr>
- <td><code>void erase (iterator it)</code></td>
- <td>Erases the value at <code>it</code>.</td>
- </tr>
- <tr>
- <td><code>void clear ()</code></td>
- <td>Clears the array.</td>
- </tr>
- <tr>
- <td><code>const_iterator find (index_type i) const</code></td>
- <td>Finds an element whose index is <code>i</code>.</td>
- </tr>
- <tr>
- <td><code>iterator find (index_type i)</code></td>
- <td>Finds an element whose index is <code>i</code>.</td>
- </tr>
- <tr>
- <td><code>const_iterator lower_bound (index_type i)
- const</code></td>
- <td>Finds the first element whose index is not less than
- <code>i</code> .</td>
- </tr>
- <tr>
- <td><code>iterator lower_bound (index_type i)</code></td>
- <td>Finds the first element whose index is not less than
- <code>i</code> .</td>
- </tr>
- <tr>
- <td><code>const_iterator upper_bound (index_type i)
- const</code></td>
- <td>Finds the first element whose index is greater than
- <code>i</code> .</td>
- </tr>
- <tr>
- <td><code>iterator upper_bound (index_type i)</code></td>
- <td>Finds the first element whose index is greater than
- <code>i</code> .</td>
- </tr>
- <tr>
- <td><code>const_iterator begin () const</code></td>
- <td>Returns a <code>const_iterator</code> pointing to the beginning
- of the <code>map_array</code>.</td>
- </tr>
- <tr>
- <td><code>const_iterator end () const</code></td>
- <td>Returns a <code>const_iterator</code> pointing to the end of
- the <code>map_array</code>.</td>
- </tr>
- <tr>
- <td><code>iterator begin ()</code></td>
- <td>Returns a <code>iterator</code> pointing to the beginning of
- the <code>map_array</code>.</td>
- </tr>
- <tr>
- <td><code>iterator end ()</code></td>
- <td>Returns a <code>iterator</code> pointing to the end of the
- <code>map_array</code>.</td>
- </tr>
- <tr>
- <td><code>const_reverse_iterator rbegin () const</code></td>
- <td>Returns a <code>const_reverse_iterator</code> pointing to the
- beginning of the reversed <code>map_array</code>.</td>
- </tr>
- <tr>
- <td><code>const_reverse_iterator rend () const</code></td>
- <td>Returns a <code>const_reverse_iterator</code> pointing to the
- end of the reversed <code>map_array</code>.</td>
- </tr>
- <tr>
- <td><code>reverse_iterator rbegin ()</code></td>
- <td>Returns a <code>reverse_iterator</code> pointing to the
- beginning of the reversed <code>map_array</code>.</td>
- </tr>
- <tr>
- <td><code>reverse_iterator rend ()</code></td>
- <td>Returns a <code>reverse_iterator</code> pointing to the end of
- the reversed <code>map_array</code>.</td>
- </tr>
- </tbody>
- </table>
- <hr />
- <p>Copyright (©) 2000-2002 Joerg Walter, Mathias Koch<br />
- Use, modification and distribution are subject to 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">
- http://www.boost.org/LICENSE_1_0.txt
- </a>).
- </p>
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