Hands-On Object-Oriented Programming with Kotlin

The downTo function

Neither the two-dots operator nor the rangeTo function can create a range in reverse order. We cannot, for example, write 5.rangeTo1 or 5..1. We can, however, use the downTo function to create a range in reverse order:

val range1 = 10.downTo(1)for(i in range1) {    println(i)} val range2 = 10 downTo 1for(i in range2) {    println(i)}

Both range1 and range2 consist of numbers from 10 to 1.