Kotlin Programming Cookbook

How to do it...

In Kotlin, parameters of functions can have default values, and they are used when the corresponding argument is omitted. This, in turn, reduces the number of overloads. The preceding example with three different types of parameters can be resolved easily in Kotlin with a lot less code:

1. Let's add the mentioned code in the editor, run it, and check the output:

fun main(args: Array<String>) {    foo()        foo(1)    foo(1,0.1)    foo(1,0.1,"custom string")}fun foo(a:Int=0, b: Double =0.0, c:String="some default value"){    println("a=$a , b=$b ,c = $c")}

If you run the preceding code, you will see the following output:

Output:a=0 , b=0.0 ,c = some default valuea=1 , b=0.0 ,c = some default valuea=1 , b=0.1 ,c = some default valuea=1 , b=0.1 ...