import scala.concurrent.{ Await, Future }
import scala.concurrent.duration._

object Main extends App {
  println("fooo")
  val futureRes = Await.result(Future.successful(1), 5.seconds)
  List(1, 2, 4, 5, 6) match {
    case h :: _ ⇒ println("not empty list")
    case Nil    ⇒ println("empty list")
  }

  List(1 → 2, 2 → 3, 3 → 4) match {
    case (1, 2) :: _   ⇒ 90 → 1
    case (22, 44) :: _ ⇒ 1  → 150
  }
}