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263 lines
7.5 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
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"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<meta name="generator" content=
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"HTML Tidy for Linux/x86 (vers 1st March 2004), see www.w3.org" />
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<meta http-equiv="Content-Type" content=
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"text/html; charset=us-ascii" />
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<link href="ublas.css" type="text/css" />
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<title>Sparse Storage</title>
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</head>
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<body>
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<h1><img src="c++boost.gif" alt="c++boost.gif" align="middle" />
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Sparse Storage</h1>
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<h2><a name="map_std" id="map_std"></a> Default Standard Map</h2>
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<h4>Description</h4>
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<p>The templated class <code>map_std<I, T></code> provides a
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wrapper for the standard library associative container
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<code>std::map</code>. The wrapper has one simple purpose. It
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allows the definition of a default template parameter (for the
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adapted array) when declaring the sparse container types.</p>
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<h4>Example</h4>
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<pre>
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#include <boost/numeric/ublas/storage_sparse.hpp><br />
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<br />
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int main () {<br />
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using namespace boost::numeric::ublas;<br />
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map_std<int, double> a (3);<br />
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for (unsigned i = 0; i < a.size (); ++ i) {<br />
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a [i] = i;<br />
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std::cout << a [i] << std::endl;<br />
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}<br />
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}<br />
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</pre>
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<h4>Definition</h4>
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<p>Defined in the header storage_sparse.hpp.</p>
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<h4>Template parameters</h4>
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<table border="1" summary="parameters">
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<tbody>
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<tr>
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<th>Parameter</th>
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<th>Description</th>
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<th>Default</th>
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</tr>
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<tr>
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<td><code>I</code></td>
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<td>The type of index stored in the array.</td>
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<td></td>
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</tr>
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<tr>
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<td><code>T</code></td>
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<td>The type of object stored in the array.</td>
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<td></td>
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</tr>
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</tbody>
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</table>
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<h4>Model of</h4>
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<p>Reversible Container.</p>
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<h4>Type requirements</h4>
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<p>None, except for those imposed by the requirements of Reversible
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Container.</p>
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<h4>Public base classes</h4>
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<p>std::map</p>
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<h2><a name="map_array" id="map_array"></a> Map Array</h2>
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<h4>Description</h4>
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<p>The templated class <code>map_array<I, T></code>
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implements a simple std::map-like associative container as a sorted
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array.</p>
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<h4>Example</h4>
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<pre>
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#include <boost/numeric/ublas/storage_sparse.hpp><br />
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<br />
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int main () {<br />
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using namespace boost::numeric::ublas;<br />
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map_array<int, double> a (3);<br />
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for (unsigned i = 0; i < a.size (); ++ i) {<br />
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a [i] = i;<br />
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std::cout << a [i] << std::endl;<br />
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}<br />
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}<br />
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</pre>
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<h4>Definition</h4>
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<p>Defined in the header storage_sparse.hpp.</p>
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<h4>Template parameters</h4>
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<table border="1" summary="parameters">
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<tbody>
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<tr>
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<th>Parameter</th>
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<th>Description</th>
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<th>Default</th>
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</tr>
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<tr>
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<td><code>I</code></td>
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<td>The type of index stored in the array.</td>
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<td></td>
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</tr>
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<tr>
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<td><code>T</code></td>
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<td>The type of object stored in the array.</td>
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<td></td>
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</tr>
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</tbody>
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</table>
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<h4>Model of</h4>
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<p>Reversible Container.</p>
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<h4>Type requirements</h4>
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<p>None, except for those imposed by the requirements of Reversible
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Container.</p>
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<h4>Public base classes</h4>
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<p>None.</p>
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<h4>Members</h4>
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<table border="1" summary="members">
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<tbody>
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<tr>
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<th>Member</th>
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<th>Description</th>
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</tr>
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<tr>
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<td><code>map_array ()</code></td>
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<td>Allocates a <code>map_array</code> that holds at most zero
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elements.</td>
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</tr>
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<tr>
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<td><code>map_array (size_type size)</code></td>
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<td>Allocates a <code>map_array</code> that holds at most
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<code>size</code> elements.</td>
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</tr>
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<tr>
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<td><code>map_array (const map_array &a)</code></td>
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<td>The copy constructor.</td>
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</tr>
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<tr>
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<td><code>~map_array ()</code></td>
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<td>Deallocates the <code>map_array</code> itself.</td>
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</tr>
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<tr>
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<td><code>void resize (size_type size)</code></td>
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<td>Reallocates a <code>map_array</code> to hold at most
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<code>size</code> elements. The content of the
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<code>map_array</code> is preserved.</td>
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</tr>
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<tr>
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<td><code>size_type size () const</code></td>
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<td>Returns the size of the <code>map_array</code>.</td>
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</tr>
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<tr>
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<td><code>data_reference operator [] (index_type i)</code></td>
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<td>Returns a reference of the element that is associated with a
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particular index. If the <code>map_array</code> does not already
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contain such an element, <code>operator[]</code> inserts the
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default <code>T ()</code>.</td>
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</tr>
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<tr>
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<td><code>map_array &operator = (const map_array
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&a)</code></td>
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<td>The assignment operator.</td>
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</tr>
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<tr>
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<td><code>map_array &assign_temporary (map_array
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&a)</code></td>
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<td>Assigns a temporary. May change the array <code>a</code>.</td>
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</tr>
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<tr>
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<td><code>void swap (map_array &a)</code></td>
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<td>Swaps the contents of the arrays.</td>
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</tr>
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<tr>
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<td><code>pointer insert (pointer it, const value_type
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&p)</code></td>
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<td>Inserts <code>p</code> into the array, using <code>it</code> as
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a hint to where it will be inserted.</td>
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</tr>
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<tr>
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<td><code>void erase (pointer it)</code></td>
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<td>Erases the value at <code>it</code>.</td>
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</tr>
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<tr>
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<td><code>void clear ()</code></td>
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<td>Clears the array.</td>
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</tr>
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<tr>
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<td><code>const_pointer find (index_type i) const</code></td>
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<td>Finds an element whose index is <code>i</code>.</td>
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</tr>
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<tr>
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<td><code>pointer find (index_type i)</code></td>
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<td>Finds an element whose index is <code>i</code>.</td>
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</tr>
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<tr>
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<td><code>const_pointer lower_bound (index_type i)
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const</code></td>
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<td>Finds the first element whose index is not less than
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<code>i</code> .</td>
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</tr>
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<tr>
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<td><code>pointer lower_bound (index_type i)</code></td>
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<td>Finds the first element whose index is not less than
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<code>i</code> .</td>
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</tr>
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<tr>
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<td><code>const_pointer upper_bound (index_type i)
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const</code></td>
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<td>Finds the first element whose index is greater than
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<code>i</code> .</td>
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</tr>
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<tr>
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<td><code>pointer upper_bound (index_type i)</code></td>
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<td>Finds the first element whose index is greater than
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<code>i</code> .</td>
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</tr>
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<tr>
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<td><code>const_iterator begin () const</code></td>
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<td>Returns a <code>const_iterator</code> pointing to the beginning
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of the <code>map_array</code>.</td>
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</tr>
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<tr>
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<td><code>const_iterator end () const</code></td>
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<td>Returns a <code>const_iterator</code> pointing to the end of
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the <code>map_array</code>.</td>
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</tr>
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<tr>
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<td><code>iterator begin ()</code></td>
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<td>Returns a <code>iterator</code> pointing to the beginning of
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the <code>map_array</code>.</td>
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</tr>
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<tr>
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<td><code>iterator end ()</code></td>
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<td>Returns a <code>iterator</code> pointing to the end of the
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<code>map_array</code>.</td>
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</tr>
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<tr>
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<td><code>const_reverse_iterator rbegin () const</code></td>
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<td>Returns a <code>const_reverse_iterator</code> pointing to the
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beginning of the reversed <code>map_array</code>.</td>
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</tr>
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<tr>
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<td><code>const_reverse_iterator rend () const</code></td>
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<td>Returns a <code>const_reverse_iterator</code> pointing to the
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end of the reversed <code>map_array</code>.</td>
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</tr>
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<tr>
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<td><code>reverse_iterator rbegin ()</code></td>
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<td>Returns a <code>reverse_iterator</code> pointing to the
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beginning of the reversed <code>map_array</code>.</td>
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</tr>
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<tr>
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<td><code>reverse_iterator rend ()</code></td>
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<td>Returns a <code>reverse_iterator</code> pointing to the end of
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the reversed <code>map_array</code>.</td>
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</tr>
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</tbody>
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</table>
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<hr />
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<p>Copyright (©) 2000-2002 Joerg Walter, Mathias Koch<br />
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Permission to copy, use, modify, sell and distribute this document
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is granted provided this copyright notice appears in all copies.
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This document is provided ``as is'' without express or implied
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warranty, and with no claim as to its suitability for any
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purpose.</p>
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<p>Last revised: 1/15/2003</p>
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</body>
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</html>
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