<a href="Belt_HashMapInt.html#TYPEt">t</a> -> 'c -> ('c -> <a href="Belt_HashMapInt.html#TYPEkey">key</a> -> 'b -> 'c) -> 'c</code></pre>
<pre><span id="VALkeepMapInPlaceU"><span class="keyword">val</span> keepMapInPlaceU</span> : <code class="type">'a <a href="Belt_HashMapInt.html#TYPEt">t</a> -><br>       (<a href="Belt_HashMapInt.html#TYPEkey">key</a> -> 'a -> 'a option [@bs]) -> unit</code></pre>
<pre><span id="VALkeepMapInPlace"><span class="keyword">val</span> keepMapInPlace</span> : <code class="type