FizzBuzz.scala

object FizzBuzz extends App {

  val nones = Stream.continually(None)
  val fizzes: Stream[Option[String]] = nones.take(2) ++ Some("Fizz") #:: fizzes
  val buzzes: Stream[Option[String]] = nones.take(4) ++ Some("Buzz") #:: buzzes

  for (((fizz, buzz), n) <- fizzes zip buzzes zip (1 to 100)) {
    println(fizz.map(_ + buzz.getOrElse("")).orElse(buzz).getOrElse(n))
  }

}