Kotlin Academy · Lesson

Enum Values and Ordinals

Iterate and index.

Listing All Constants

The generated values() function returns an array of every constant in declaration order.

enum class Suit { HEARTS, CLUBS }

fun main() {
    for (s in Suit.values()) println(s)
}

Modern Kotlin prefers entries, which returns an immutable list and avoids creating a new array each call.

enum class Suit { HEARTS, CLUBS }

fun main() {
    for (s in Suit.entries) println(s)
}