future_sequence.scala

import scala.concurrent._
import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.duration._
 
object Main extends App {
    val futures = 1 to 1000 map { i => Future { i } }
    val seq = Future.sequence(futures)
    seq.onSuccess { case i => println(i) }
     
    // just because ideone will kill main thread otherwise
    Await.result(seq, Duration(100, "seconds"))
}