Kotlin Programming Cookbook

How to do it...

First, let's create a file, name it whenWithRanges.kt, and follow these steps:

1. Let's try a basic when statement to understand how it works:

fun main(args: Array<String>) {     val x = 12     when(x){         12 -> println("x is equal to 12")         4 -> println("x is equal to 4")         else -> println ("no conditions match!")     } }

So basically, this code block works like a switch case statement, and it can also be implemented using an if statement.

2. Now, let's see if x lies between 1 to 10 or outside it:

fun main(args: Array<String>) {     val x = 12     when(x){         in (1..10) -> println("x lies between 1 to 10")         !in (1..10) -> println("x does not lie between 1 to 10")     } }

3. Let's see what else we can do. In the following example, we will work with different types ...