In Kotlin, when is already so powerful but did you know you can also use custom objects in when? Amazing, right? Let's go about implementing it.
You need to install a preferred development environment that compiles and runs Kotlin. You can also use the command line for this purpose, for which you need Kotlin compiler installed, along with JDK. I am using the command line to compile and run my Kotlin code for this recipe.
Create a file and name it whenWithObject.kt, and then, let's try when with a custom object. In this example, we will create an object with some properties and try to match it in a when statement:
fun main(args: Array<String>) {
val x = ob(2, true, 500)
when(x){
ob(2, true, 500) -> println("equals correct object")
ob(12, false, 800) -> {
println("equals wrong object")
}
else -> println("does not match any object")
}
}
data class ob(val value...