;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">

<p>Insert a key→value pair if the key is not present. </p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">m</td><td>Map to modify </td></tr>
    <tr><td class="paramname">key</td><td>Key to insert </td></tr>
    <tr><td class="paramname">value</td><td>Value to store </td></tr>
  </table>
  </dd>
<