Pass an Array to varargs parameter

Question

If I have a function header like:

fun addAttributes(vararg attributes: String) {
  ...
}

And I want to pass attributes in here:

val atts = arrayOf("1", "2", "3")
addAttributes(atts)

It gives a compilation error about incompatible types. What should I do?

Answer 1

you have two ways:

1. using named parameter
   addAttributes(attributes = arrayOf("1", "2", "3"))
2. using spread operator
   addAttributes(*arrayOf("1", "2", "3"))