Why use scala's cake pattern rather than abstract fields?

Question

I have been reading about doing Dependency Injection in scala via the cake pattern. I think I understand it but I must have missed something because I still can\'t see the

Answer 1

In this example I think there is no big difference. Self-types can potentially bring more clarity in cases when a trait declares several abstract values, like

trait ThreadPool {
  val minThreads: Int
  val maxThreads: Int
}

Then instead of depending on several abstract values you just declare dependency on a ThreadPool. Self-types (as used in Cake pattern) for me are just a way to declare several abstract members at once, giving those a convenient name.