How to pass Scala array into Scala vararg method?

问题

Consider the code below:

private def test(some:String*){

}

private def call () {
  val some = Array(\"asd\", \"zxc\")
  test(some)
}

It prints expect String, found Array[String] Why? Are Scala varargs not arrays?

Note

I found several questions on Stack Overflow about Scala varargs, but all of them are about calling Java varargs methods or about converting Scala lists to arrays.

回答1:

Append :_* to the parameter in test like this

test(some:_*)

And it should work as you expect.

If you wonder what that magical :_* does, please refer to this question.

回答2:

It is simple:

def test(some:String*){}

def call () {
  val some = Array("asd", "zxc")
  test(some: _*)
}

来源：https://stackoverflow.com/questions/31064753/how-to-pass-scala-array-into-scala-vararg-method