2 匹配类型

匹配前提必须是 case 中的子类或者父类

object Test3{
  def main(args: Array[String]): Unit = {
    def matchClass(x:Any):String={
      x match {
        case i:Array[Int] => "array"
        case i:List[Int] => "list"
        case _ => "Nothing"
      }
    }
    println(matchClass(Array(1, 2, 3)))
    println(matchClass(List(1, 2, 3)))
  }
}