Ranges

In Kotlin they have a thing called a range that can be created like this:

1..4

This creates an object of type IntRange. There are some cool things you can do with an IntRange. You can use for looping:

for(n in 1..4){
println(n)
}
//prints:
//1
//2
//3
//4

And you can use it in an if:

if(x in 1..4){
println("x is OK"
}

Dave Ford is a developer, trainer and consultant specializing in Java, JavaScript, Kotlin and React. He is the author of Kotlin Quick Start for Java Developers , an online course published on Udemy. He offers instructor-led React and Kotlin training through his training company, Smart Soft.

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