FizzBuzz.scala

def evenlyDivisibleBy(divider: Int): Int ^^ Int = Extractor {
  case n if n % divider == 0 => n
}

val evenlyDivisibleByFive = evenlyDivisibleBy(5)
val evenlyDivisibleByThree = evenlyDivisibleBy(3)
val evenlyDivisibleByFifteen = evenlyDivisibleBy(15)

def fizzbuzz(x: Int) = x match {
  case evenlyDivisibleByFifteen(_) => "fizzbuzz"
  case evenlyDivisibleByFive(_) => "buzz"
  case evenlyDivisibleByThree(_) => "fizz"
  case _ => x
}

(1 until 100).map(fizzbuzz).foreach(println)

Matcher.scala

class Extractor[A, R](val f: PartialFunction[A, R]) { 
  def unapply(x: A): Option[R] = f.lift(x)
  def |(other: Extractor[A, R]): Extractor[A, R] = new Extractor(f.orElse(other.f))
}

type ^^[A, R] = Extractor[A, R]

object Extractor { 
  def apply[A, R](f: PartialFunction[A, R]) = 
    new Extractor[A, R](f)
}