range function:
Create a new list with items from 0 to the second argument. If the second argument is not a positive integer, return nothing. Be careful not to use large numbers.
Examples:
- running:
(range 4)will give:[0, 1, 2, 3]
- running:
(range -4)will return nothing
- running:
(range [1, 2, 3, 4])will return nothing