Pattern Matchinb type tests

import scala.util.parsing.json.JSON

object Test extends App {
  val tree = JSON parseFull """[10, true, "ok", {"no":"yes"}]"""
  //val tree = JSON parseFull """{
  //     "x": 10,
  //     "xs": [ 1, 2, 3 ],
  //     "ys": { "a": "A", "b": "B" },
  //     10: 22}"""
  //> tree  : Option[Any] = Some(Map(x -> 10.0, xs -> List(1.0, 2.0, 3.0), ys -> M
  //| ap(a -> A, b -> B)))


  tree match {
    case Some(map : Map[String, Any]) => {
      val keyValues = for {
        k <- map.keySet
      } yield (k.toLowerCase, map(k))
      println(keyValues)
    }
    case Some(list: List[Any]) => {
      val values = for {
        e <- list
      } yield (e, e.getClass)
      println(values)
    }
    case _ => println("JSON object needed")
  }                                               //> Set((x,10.0), (xs,List(1.0, 2.0, 3.0)), (ys,Map(a -> A, b -> B)))

  println(matchTest("two"))
  println(matchTest("test"))
  println(matchTest(1))

  def matchTest(x: Any): Any = x match {
    case 1 => "one"
    case "two" => 2
    case y: Int => "scala.Int"
    case _ => "many"
  }

}