Scala FizzBuzz using Either

FizzBuzzUsingEither.scala

object FizzBuzz extends App {

  def check[A](properties: (A ⇒ Boolean, String)*)(x: A): String =
    properties
      .foldLeft(Left(x.toString): Either[String, String]) {
        case (acc, (p, s)) ⇒
          if (p(x)) Right(acc.fold(_ ⇒ s, _ + s))
          else acc
      }
      .merge

  val fizzBuzz =
    1 to 100 map check(
      (_ % 3 == 0, "Fizz"),
      (_ % 5 == 0, "Buzz"))

  println(fizzBuzz.mkString(", "))

}