Having fun with Scala extractor objects. The && combinator can be used to merge multiple extractors into one MEGA extractor.

&&.scala

object && {
  def unapply[A](e: A) = Some(e -> e)

  def test() {
    val greaterThan10 = Find[Int](_ > 10)
    List(1, 2, 11, 3) match {
      // All must succeed
      case greaterThan10(ten) && Last(last) && Head(head) =>
        println(ten) // 11
        println(last) // 3
        println(head) // 1
      case _ => println("Sorry")
    }
  }
}

object Head { def unapply[T](lst: List[T]) = lst.headOption }
case class Find[T](f: T => Boolean) { def unapply(lst: List[T]) = lst.find(f) }
object Last { def unapply[T](lst: List[T]) = lst.lastOption }