  to its initial size.<br>
<b>Since</b> 4.00.0<br>
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<pre><span id="VALcopy"><span class="keyword">val</span> copy</span> : <code class="type">('a, 'b) <a href="Hashtbl.html#TYPEt">t</a> -&gt; ('a, 'b) <a href="Hashtbl.html#TYPEt">t</a></code></pre><div class="info ">
Return a copy of the given hashtable.<br>
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<pre><span id="VALadd"><span class="keyword">val</span> add</span> : <code class="type">('a, 'b) <a href="Hashtbl.html#TYPEt">t</a> -&gt; 'a -&gt; 'b -&gt; unit</code></pre><div class="in