<p>
                      Equivalent to <code class="computeroutput"><span class="identifier">as</span><span class="special">&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">wstring</span><span class="special">&gt;()[</span><span class="identifier">a</span><span class="special">]</span></code>
                    </p>
                  </td>
</tr>
</tbody>
</table></div>
<h6>
<a name="spirit.karma.reference.directive.as.h7"></a>
            <span class="p