>::</span><span class="identifier">string</span><span class="special">&gt;()[</span><span class="identifier">a</span><span class="special">]</span></code>
                    </p>
                  </td>
</tr>
<tr>
<td>
                    <p>
                      <code class="computeroutput"><span class="identifier">as_wstring</span><span class="special">[</span><span class="identifier">a</span><span class="special">]</span></code>
                    </p>
                  </td>
<td>
                    