Checking for a value of a Future

Question

I want to check whether or not a Future f is completed right now by looking at a value its holding. That is not about

f onComplete {

}

It's about checking a value it's holding currently without blocking.

Your thoughts?

Answer 1

f.value match {
  case Some(Success(x)) => println(s"the future is completed successfully with value $x")
  case Some(Failure(e)) => println(s"the future failed with an error: $e")
  case None => println("the future has not yet completed")
}

Answer 2

You can use value if it is None the Future is not completed. If it is Some some will contain the value.