 class="spec value anchored" id="val-invalidate"><a href="#val-invalidate" class="anchor"></a><code><span><span class="keyword">val</span> invalidate : 
  <span><span>(<a href="../../PulseAbstractValue/index.html#type-t">Pulselib.PulseBasicInterface.AbstractValue.t</a>
   * <a href="../../PulseValueHistory/index.html#type-t">Pulselib.PulseBasicInterface.ValueHistory.t</a>)</span> <span class="arrow">&#45;&gt;</span></span>
  <span><a href="../../PulseInvalidation/index.html#type-t">Pulselib.PulseBasicInterf