arrow">&#45;&gt;</span></span>
  <span><a href="../index.html#type-t">t</a> <span class="arrow">&#45;&gt;</span></span>
  <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>
    option</span></span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-exists_edge"><a href="#val-exists_edge" class="anchor">