Functional Kotlin

Returning two values from a function

While, generally, a function can return only a single value, in Kotlin, by leveraging the benefits of the Pair type and destructuring declarations, we can return two variables from a function. Consider the following example:

fun getUser():Pair<Int,String> {//(1) 
    return Pair(1,"Rivu") 
} 
fun main(args: Array<String>) { 
    val (userID,userName) = getUser()//(2) 
     println("User ID: $userID t User Name: $userName") 
} 

In the preceding program, on comment (1), we created a function that would return a Pair<Int,String> value.

On comment (2), we used that function in a way that seems like it returns two variables. Actually, destructuring declarations allows you to destructure a data class/Pair and get its underlying ...