Collections

Set Basics

Check whether a set contains a value.

Set Basics

SetBasics.kt 
fun main() {
    val tag = 
    val allowed = setOf("red", "blue")
    val hasTag = tag in allowed
    val label = if (hasTag) "allowed" else "missing"

    println("tag=$tag")
    println("label=$label")
}

fun main() {
    val tag = 
    val allowed = setOf("red", "blue")
    val hasTag = tag in allowed
    val label = if (hasTag) "allowed" else "missing"

    println("tag=$tag")
    println("label=$label")
}

fun main() {
    val tag = 
    val allowed = setOf("red", "blue")
    val hasTag = tag in allowed
    val label = if (hasTag) "allowed" else "missing"

    println("tag=$tag")
    println("label=$label")
}
set A set keeps unique values and answers membership questions.