...) are handled here : given a function name and and a list of argument, it returns a possibly bottom result</p></dd></dl><dl><dt class="spec value" id="val-spawn"><a href="#val-spawn" class="anchor"></a><code><span class="keyword">val</span> spawn : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> float</code></dt><dd><p>generate a random float within the given interval</p></dd></dl></section></details></div></div></div><dl><dt class="spec value" id="val-filter_leq"><a href="#val-filter_leq" class