ignature </h2>
<p>Given a <code>Hashable</code> <code>H</code>, the signature is \( \mathtt{hash} : H \to \mathtt{type\_tag} \)</p>
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">x</td><td>An object whose hash is to be computed.</td></tr>
  </table>
  </dd>
</dl>
<h2>Example </h2>
<div class="fragment"><div class="line"><span class="comment">// Copyright Louis Dionne 2013-2017</span></div><div class="line"><span class="comment">// Distributed under the Boos