How to iterate over range with negative step?

Question

Is there a way to do something like:

0 to -10 map { i=>
...
}

repl gives me:

scala.collection.immutable.IndexedSeq[Unit] = Vector()

Answer 1

0 to (-10, -1)

or

0 to -10 by -1

Answer 2

Add the by clause:

0 to -10 by -1
res0: Range(0, -1, -2, -3, -4, -5, -6, -7, -8, -9, -10)