Hands-On Object-Oriented Programming with Kotlin

Functions and vararg

Kotlin allows programmers to pass arguments separated by commas to the function. These arguments are automatically converted into an array. This is called a vararg, a variable argument. Declare a vararg along with its type in the function declaration:

fun varargString(vararg list : String){    for (item in list){        println(item)     }}fun main (args: Array<String>) {    varargString("ett","tva","tre")    varargString("Sat","Sun","Mon")}

As another example, write a function that takes an integer vararg as a parameter, adds it, and displays the total on the screen:

fun addVararg(vararg list: Int){  var total = 0  for (item in list){    total += item  }  println("Total $total")} fun main (args: Array<String>) { addVararg(1,2,3,4,5,6,7,8,9,10) ...