so I try this code
(for [x (range 1 8) y (range 1 8) :while (and (< x y) (even? x))] [x y])
and get back ()
but I try this:
(for [x (range 1 8) y (range 1 8) :while (and (< y x) (even? x))] [x y])
and I get the desired result. What effect did changing the positions of x and y have? The first snippet shouldn't return an empty list.. after all there have to be some even x's smaller than y