ef="../PulseValueHistory/index.html#type-t">PulseBasicInterface.ValueHistory.t</a></code></span></summary><dl><dt class="spec type" id="type-key"><a href="#type-key" class="anchor"></a><code><span class="keyword">type</span> key</code><code> = <a href="../../IR/Var/index.html#type-t">IR.Var.t</a></code></dt><dt class="spec type" id="type-value"><a href="#type-value" class="anchor"></a><code><span class="keyword">type</span> value</code><code> = <a href="../PulseAbstractValue/index.html#type-t">PulseBasicInt