pan name="f">f: (<span class="extype" name="react.core.ReactiveLibrary.SignalTrait.A">A</span>) ⇒ <span class="extype" name="scala.Unit">Unit</span></span>)</span><span class="result">: <a href="ReactiveLibrary$$Cancelable.html" class="extype" name="react.core.ReactiveLibrary.Cancelable">Cancelable</a></span>
      </span>
      </h4><span class="permalink">
      <a href="../../index.html#react.core.ReactiveLibrary$$SignalTrait@observe(f:A=&gt;Unit):react.core.ReactiveLibrary.Cancelable" title="Permalink