Given a registration function that can execute an asynchronous process, executes it and builds a CancelableFuture value out of it.

The given registration function can return a Cancelable reference that can be used to cancel the executed async process. This reference can be empty.

def delayedResult[A](f: => A)(implicit s: Scheduler): CancelableFuture[A] =
  CancelableFuture.async { complete =>
    val task = s.scheduleOnce(10.seconds) { complete(Try(f)) }

    Cancelable { () =>
      println("Cancelling!")
      task.cancel()
    }
  }

This is much like working with Scala's Promise, only safer.