<dd>
  <table class="params">
    <tr><td class="paramname">m</td><td>Map to query </td></tr>
    <tr><td class="paramname">key</td><td>Key to look up </td></tr>
    <tr><td class="paramname">out_value</td><td>Optional; if non-NULL, receives the found value </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>1 if found (out_value set), 0 if not found </dd></dl>

</div>
</div>
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