Use an inclusive range to check membership.

Ranges

Ranges.kt
fun main() {
    val value = 
    val range = 1..5
    val inside = value in range
    val label = if (inside) "inside" else "outside"

    println("value=$value")
    println("label=$label")
}
fun main() {
    val value = 
    val range = 1..5
    val inside = value in range
    val label = if (inside) "inside" else "outside"

    println("value=$value")
    println("label=$label")
}
fun main() {
    val value = 
    val range = 1..5
    val inside = value in range
    val label = if (inside) "inside" else "outside"

    println("value=$value")
    println("label=$label")
}
range The `..` operator builds an inclusive range.