Measure time in Scala

time.scala

object Time {
 
  def time[A](a: => A) = {
       val now = System.nanoTime
       val result = a
       val micros = (System.nanoTime - now) / 1000
       println("%d microseconds".format(micros))
       result
  }
  
  // use it like: time { fn() }
}