A reverse linked-list, as an enumeration in Dotty: enum Tsil[+T] { case Lin case Snoc(init: Tsil[T], last: T) }
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because this one looks like what you'd normally do with a sealed trait / object / case class to me
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I'm just worried about the syntax that (judging by the sample) would only work inside an enum
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in Scala 2.x, basically every block of {} would allow the same stuff to be put inside (with minor exceptions) - defs, vals, classes etc
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