What is Scala's yield?

Question

I understand Ruby and Python\'s yield. What does Scala\'s yield do?

Answer 1

The keyword yield in Scala is simply syntactic sugar which can be easily replaced by a map, as Daniel Sobral already explained in detail.

On the other hand, yield is absolutely misleading if you are looking for generators (or continuations) similar to those in Python. See this SO thread for more information: What is the preferred way to implement 'yield' in Scala?