Effective Enums in Kotlin with reverse lookup?

Question

I\'m trying to find the best way to do a \'reverse lookup\' on an enum in Kotlin. One of my takeaways from Effective Java was that you introduce a static map inside the enum

Answer 1

Another option, that could be considered more "idiomatic", would be the following:

companion object {
    private val map = Type.values().associateBy(Type::value)
    operator fun get(value: Int) = map[value]
}

Which can then be used like Type[type].