A somewhat common Scala idiom is to make an abstract type extend Product with Serializable. There isn’t an obvious reason to do this, and people have asked me a number of times why I’ve done this. While I don’t think that Product or Serializable are particularly good abstractions, there’s a reason that I extend them. Let’s say that I’m writing a simple enum-like Status type: object EnumExample1 { sealed abstract class Status case object Pending extends Status case object InProgres...
