Hey! :smile: Does Kotlin automatically use referen...

# announcements

[Edoardo Luppi]

Hey! 😄
Does Kotlin automatically use referential equality for Enum types?

[diesieben07]

If you use == it will result in a call to equals, which enums do not override. As such you get the default implementation, which is referentical equality.

TLDR: Yes.

[Edoardo Luppi]

@diesieben07 enum overrides equals and uses reference equality internally. So if an equals call gets generated it's a waste of a call 😄

[diesieben07]

Ah, it overrides it to make it final, you are correct.

[diesieben07]

Its not a waste of a call. the JVM will optimize it away 😉

[Edoardo Luppi]

@diesieben07 most probably, yes. It was just to understand quickly what bytecode gets generated. But I'll check myself just to be sure