de">tbl</code>,
   a binding of <code class="code">x</code> to <code class="code">y</code> is added to <code class="code">tbl</code>.
   This is functionally equivalent to <a href="Hashtbl.html#VALremove"><code class="code"><span class="constructor">Hashtbl</span>.remove</code></a><code class="code">&nbsp;tbl&nbsp;x</code>
   followed by <a href="Hashtbl.html#VALadd"><code class="code"><span class="constructor">Hashtbl</span>.add</code></a><code class="code">&nbsp;tbl&nbsp;x&nbsp;y</code>.<br>
</div>

<pre>