FizzBuzzWhizz https://www.jinshuju.net/f/EGQL3D

gistfile1.scala

package fbw

object FizzBuzzWhizz {
  
  implicit class RichBoolean(bool: Boolean) {
    def option[T](value:T) = if(bool) Some(value) else None
  }
  implicit class RichOption[T](option:Option[T]) {
    def elseFlatMap(value: =>Option[T]) = option match {
      case Some(_) => option
      case None => value
    }
    def elseMap(value: T) = option match {
      case Some(_) => option
      case None => Some(value)
    }
  }
  
  def main(args: Array[String]) {
    val (a,b,c) = (3,5,7)
    
    (1 to 100).map { i =>
      (i.toString contains a.toString)
        .option("Fizz")
        .elseMap {
          List( (i % a == 0).option("Fizz"), 
        		(i % b == 0).option("Buzz"), 
        		(i % c == 0).option("Whizz") ).flatten.mkString
        }
        .flatMap(x => if(x=="") None else Some(x))
        .elseMap(i.toString)
      }.flatten.foreach(println)
    }
}