Kotlin: variable in enum class can't be changed after initialization-CodePudding

When writing this example into the IDE:

enum class EnumTest {
    FOO, BAR;

    lateinit var foobar: String
}

I get the message With old Native GC, variable in enum class can't be changed after initialization on the "foobar" variable. I can't find anything about this message online. Also everything seems to work just fine, so my question is:

When and how does this affect me?

Thank you!

CodePudding user response：

You could declare your values in a singleton object, set them there and reference it in the enum.

object Constants {
    var FOO_STR = "bla"
    var BAR_STR = "bar"
}

enum class EnumTest(val foobar: String) {
    FOO(Constants.FOO_STR),
    BAR(Constants.BAR_STR);
}

This code should work but also smells fishy. Since an enum has an immutable flavor by design, I would not recommend this approach. I feel bad about posting this... but if your main problem is the resource heavy loading of these constants, maybe you do not need an enum to store those properties. Maybe just think of a simple singleton container with simple (named) properties.