          <td></td>
        </tr>
      </table>
  </td>
  <td class="mlabels-right">
<span class="mlabels"><span class="mlabel">inline</span></span>  </td>
  </tr>
</table>
</div><div class="memdoc">

<p></p>
<p>Erase all the elements which have 'prefix' as prefix. Return the number of erase elements. </p>

</div>
</div>
<a class="anchor" id="ad3e6af6e817a9de1cae296c4c67b811d"></a>
<div class="memitem">
<div class="memproto">
<div class="memtemplate">
template&lt;class CharT, class T, class Hash = tsl::ah: