title: Scala: What is the difference between Traversable and Iterable traits in Scala collections?
body: <p>I have looked at <a href="https://stackoverflow.com/questions/2602379/in-scala-2-8-collections-why-was-the-traversable-type-added-above-iterable">this question</a> but still don't understand the difference between Iterable and Traversable traits. Can someone explain ?</p>