Is there sequential Future.find?

Question

I have some side-effectful function,

def f(): Future[Int] = {
  val n = Random.nextInt()
  println(s\"Generated $n\")
  Future(n)
}

and I

Answer 1

Instead of using Stream I suggest using another approach. Using The Future's filter and recoverWith recursively:

def findFirst[A](futureGen: => Future[A], predicate: A => Boolean): Future[A] = {
  futureGen.filter(predicate).recoverWith { case _ => findFirst(futureGen, predicate) }
}

findFirst(f, success)

This will call the Futures one after the other until 'success' will return true.