What this line means in Swift?

Question

I\'m now reading Swift 3 book and found this line there:

func sumOf(numbers: Int...) -> Int {

}

and there are just this description:

<

Answer 1

Example for using function with varidic arguments

func log(args: AnyObject ...) {
  var text = ""
  for arg in args {
    text += " \(arg)"
  }
  print("\(text)")
}

log("Arg1", "Arg2")

log("Arg1", "Arg2", "Arg3")