Why avoid subtyping?

Question

I have seen many people in the Scala community advise on avoiding subtyping \"like a plague\". What are the various reasons against the use of subtyping? What are the altern

Answer 1

I don't know Scala, but I think the mantra 'prefer composition over inheritance' applies for Scala exactly the way it does for every other OO programming language (and subtyping is often used with the same meaning as 'inheritance'). Here

Prefer composition over inheritance?

you will find some more information.