CostKind.t</a> <span>&#45;&gt;</span> <a href="BasicCostWithReason/index.html#type-t">BasicCostWithReason.t</a>)</span></span> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dt class="spec value" id="val-zero_record"><a href="#val-zero_record" class="anchor"></a><code><span class="keyword">val</span> zero_record : <a href="index.html#type-t">t</a></code></dt><dd><p>Map representing cost record {OperationCost:0; AllocationCost:0; AutoreleasepoolSize:0}</p></dd></dl><dl><dt class="spec v