he 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 &lt;boost/numeric/ublas/storage_sparse.hpp&gt;

int main () {
    using namespace boost::numeric::ublas;
    map_std&lt;int, double&gt; a (3);
    for (unsigned i = 0; i &lt; a.size (); ++ i) {
        a [i] = i;
        std::cout &lt;&lt; a [i] &lt;&lt; std::endl;
    }
}
</pre>
<h4>Definition</h4>
<p>Defined in th