scala多值参数列表

今天一个同事问我多值列表，我就把给他演示的demo放出来吧，很简单的一个概念
直接上代码:

scala> def printelements(element:Int*)  = element.foreach(println)
printelements: (element: Int*)Unit

scala> val list = Seq(1,2,3,4,5)
list: Seq[Int] = List(1, 2, 3, 4, 5)

scala> printelements(1,2,3,4)
1
2
3
4

scala> printelements(list)
<console>:13: error: type mismatch;
 found   : Seq[Int]
 required: Int
       printelements(list)
                     ^

scala> printelements(list:_*)
1
2
3
4
5

scala>