Scala and Fibonacci

After doing a few neat one liners in Scala I wondered what was a slick way to calculate the Fibonacci numbers using Scala.

I found a great discussion on the subject at http://stackoverflow.com/questions/9864497/generate-a-sequence-of-fibonacci-number-in-scala [1]

The simplest solution was made by Luigi Plinge. And here it is

val fibs: Stream[Int] = 0 #:: fibs.scanLeft(1)(_ + _)

And if you want the first 20 Fibonacci numbers just call it like this..

fibs.take(20).foreach(println)

Which will return

0 1 1 2 3 5 8 13 21 34 55 89 144 233 377 610 987 1597 2584 4181

I just thought that was pretty cool.  I am really liking Scala for making complex one liners that are relatively easy to read (once you get up to speed)

References

[1]        Stackoverflow Fibonacci discssion

            http://stackoverflow.com/questions/9864497/generate-a-sequence-of-fibonacci-number-in-scala

                Accessed 06/2014