uence</code></a> and
<a href="../../../../libs/mpl/doc/refmanual/extensible-sequence.html">
<code>MPL Extensible Sequence</code></a> containing the types of the constant
iterators of the indices held by the <code>multi_index_container</code>, in the same order
as they were specified.
</blockquote>

<h4><a name="nested_templates">Nested class templates</a></h4>

<code>template&lt;int N> struct nth_index</code>

<blockquote>
<code>nth_index&lt;N>::type</code> yields the type of the
<code>N</code>-th (0-based)