tring&nbsp;<span class="constructor">IntHashtbl</span>.t</code>.
</p><p>

    Note that the new type <code class="code"><span class="keywordsign">'</span>a&nbsp;<span class="constructor">IntHashtbl</span>.t</code> is not compatible with
    the type <code class="code">(<span class="keywordsign">'</span>a,<span class="keywordsign">'</span>b)&nbsp;<span class="constructor">Hashtbl</span>.t</code> of the generic interface. For
    example, <code class="code"><span class="constructor">Hashtbl</span>.length&nbsp