PatternMatchingBasics.scala

  def typedPatternMatching(any: Any): String = {
    any match {
      case string: String => s"I'm a string. My value: $string"
      case integer: Int   => s"I'm an integer. My value: $integer"
      case double:Double  => s"$double"
      case list: List[Any] if (list.size <= 10) => "Guards"
      case List(0, _, _) => "a three-element list with 0 as the first element"
      case List(1, _*) => "a list beginning with 1, any number of elements"
      case Vector(1, _*) => "a vector starting with 1, any number of elements"
      case map: Map[_, _] => map.keys.toString()
      case (a, b) => s"got $a and $b"
      case _ => s"I'm from an unknown type. My value: $any"
    }
  }