pan class="constructor">Not_found</span></code> if no such binding exists.<br>
</div>

<pre><span id="VALfind_opt"><span class="keyword">val</span> find_opt</span> : <code class="type">('a, 'b) <a href="Hashtbl.html#TYPEt">t</a> -&gt; 'a -&gt; 'b option</code></pre><div class="info ">
<code class="code"><span class="constructor">Hashtbl</span>.find_opt&nbsp;tbl&nbsp;x</code> returns the current binding of <code class="code">x</code> in <code class="code">tbl</code>,
    or <code class="code"><span class="co