// tupels

def divmod(x: Int, y: Int): (Int, Int) = (x / y, x % y)

//  ( 1 ,2) is  syntactic sugar for  Tuple2[Int,Int]( 1 ,2)

/*
try

divmod(x, y) match {
  case (n, d) => println("quotient: " + n + ", rest: " + d)
}
*/


// functions are objects as well, again with some syntactic sugar

// class for single-rgument functions

trait Function1[-A, +B] {
  def apply(x: A): B
}


val plus1: (Int => Int) = (x: Int) => x + 1

plus1(2)

// is a shortHand for 

val plus1: Function1[Int, Int] = new Function1[Int, Int] {
  def apply(x: Int): Int = x + 1
}

plus1.apply(2)