Kotlin function

In Kotlin, you can provide default values to parameters in function definition. If the function is called with arguments passed, those arguments are used as parameters . However, if the function is called without passing argument(s), default arguments are used.

Kotlin functions are first-class, which means they can be stored in variables and data structures, and can be passed as arguments to and returned from other higher-order functions .7 Eki 2021

You can pass a variable number of arguments to a function by declaring the function with a vararg parameter . In Kotlin, a vararg parameter of type T is internally represented as an array of type T ( Array<T> ) inside the function body.3 Mar 2018