Because always moar.

fizzBuzzStream.scala

object fizzBuzzStream extends App {
  type FizzBuffer = (Int, String)
  def fb(b: FizzBuffer)(i:Int, s:String) = if (b._1 % i == 0) { new FizzBuffer(b._1, b._2 + s) } else { b }
  def fizz = fb(_:FizzBuffer)(3, "Fizz")
  def buzz = fb(_:FizzBuffer)(5, "Buzz")

  def fizzBuzz = fizz andThen buzz

  val naturals: Stream[Int] = 1 #:: naturals.map {n => n + 1}
  val fizzyStream = naturals.map(n => fizzBuzz(new FizzBuffer(n, "")))

  print(fizzyStream.take(100).toList)
}