tt>Index</tt></font>

        </td>

        <td>&nbsp;

          

        </td>

        <td>

          The container's index type.

        </td>

        <td>

          <tt>Container::size_type</tt>

        </td>

      </tr>

    </table>

    <pre>

    template &lt;<br>          class Container

        , class DerivedPolicies

        , bool NoProxy = false

        , class Element = typename Container::value_type

        , class Key = typename Container::value_type

        