[cyber_kinetist]

Swift and Scala also uses the enum keyword to define sum types, and their history goes earlier than Rust, so now you have multiple languages to yell at!

[Karellen]

Are you sure about Scala? I'm not familiar with it, but looking at the documentation it seems that an enum is a set of values, not a set of types?

https://docs.scala-lang.org/scala3/reference/enums/enums.htm...