yword">val</span> improve_cost_with : <span><a href="#type-t">t</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="../../CostDomain/BasicCost/index.html#type-t">BasicCost.t</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="../../CostDomain/BasicCost/index.html#type-t">BasicCost.t</a> option</span></span></code></div></div></div></body></html>
