How to create List from Range

To turn any sequence s into a list, use s.toList

I'm sure digitalross' is more efficient in this case, though.

There's an apply method on the List companion object which takes a range and returns a List:

scala> List.range(2, 11)
res0: List[Int] = List(2, 3, 4, 5, 6, 7, 8, 9, 10)

There are lots of useful List factory methods in the List collection documentation.