gistfile1.txt

package pspex

import psp.core._

object Main extends App {
  def double(x: Int) = {
    println(s"1# doubling $x")
    x * 2
  }
  def greaterThanSix(x: Int) =  {
    println(s"2# filtering $x")
    x > 6
  }
  def halve(x: Int) = {
    println(s"3# halving $x")
    x / 2
  }
  
  val arr: Array[Int] = Array(1, 2, 3, 4, 5, 6).map(double).filter(greaterThanSix).map(halve).take(2)
}

1# doubling 1
2# filtering 2
1# doubling 2
2# filtering 4
1# doubling 3
2# filtering 6
1# doubling 4
2# filtering 8
3# halving 8
1# doubling 5
2# filtering 10
3# halving 10