What are the pros of using traits over abstract classes?

Question

Can someone please explain traits in Scala? What are the advantages of traits over extending an abstract class?

Answer 1

Traits are useful for mixing functionality into a class. Take a look at http://scalatest.org/. Note how you can mix in various domain-specific languages (DSL) into a test class. look at the quick start guide to look at some of the DSL's supported by Scalatest ( http://scalatest.org/quick_start )