40056.scala

package ed

import concurrent.{Await, Future}
import concurrent.duration.Duration
import concurrent.ExecutionContext.Implicits.global

// Pro Tip: you can print the code generated by the Scala compiler after the
// translation of for-comprehensions by running:
//
// scala -Xprint:firstTransform src/main/scala/ed/40056.scala
@main def futuresForTranslation =
  val f1 = Future { 451 }
  val f2 = Future { 1984 }
  val f3 = for v1 <- f1; v2 <- f2 yield v1 + v2
  println(Await.result(f3, Duration.Inf))

  val f4 = Future { 451 }
  val f5 = Future { 1984 }
  val f6 = f4.flatMap(v4 => f5.map(v5 => v4 + v5))
  println(Await.result(f6, Duration.Inf))