">'a <a href="Belt_HashMapInt.html#TYPEt">t</a> -> (<a href="Belt_HashMapInt.html#TYPEkey">key</a> -> 'a -> 'a option) -> unit</code></pre>
<pre><span id="VALsize"><span class="keyword">val</span> size</span> : <code class="type">'a <a href="Belt_HashMapInt.html#TYPEt">t</a> -> int</code></pre>
<pre><span id="VALtoArray"><span class="keyword">val</span> toArray</span> : <code class="type">'a <a href="Belt_HashMapInt.html#TYPEt">t</a> -> (<a href="Belt_HashMapInt.html#TYPEkey">key</a> * 'a) array</code></pre