How to generate the power set of a set in Scala

Question

I have a Set of items of some type and want to generate its power set.

I searched the web and couldn\'t find any Scala code that adresses this specific task.

Answer 1

Looks like no-one knew about it back in July, but there's a built-in method: subsets.

scala> Set(1,2,3).subsets foreach println
Set()
Set(1)
Set(2)
Set(3)
Set(1, 2)
Set(1, 3)
Set(2, 3)
Set(1, 2, 3)