Clojure to Scala, cleaned up

clojure-to-scala-clean.scala

def slow = Thread.sleep(700)

def fast = Thread.sleep(100)

def threadDeliver[T](fun: => T, prom: SyncVar[T]) =
  actor { prom set fun }

def tryDeliver[T](promise: SyncVar[T], a: => T, timeout: Long)(otherwise: => T): T = {
  threadDeliver(a, promise)
  promise.get(timeout) match {
    case None => otherwise
    case Some(result) => result
  }
}

def main[T](a: => T, aw: Long, b: => T, overall: Long, default: T): T = {
  val promise = new SyncVar[T]
  tryDeliver(promise, a, aw) {
    tryDeliver(promise, b, overall - aw) { default }
  }
}