al</span> split : <span><span class="optlabel">?prec</span>:float <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-t">t</a> list</span></span></code></div><div class="spec-doc"><p>splits an abstract element according to an internal heuristic</p></div></div><h3 id="constraint-conversion"><a href="#constraint-conversion" class="anchor"></a>constraint conversion</h3><div class="odoc-spec"><div class="spec type anchored" i