ref: debd13efe12eaca072229e9859aaa6df8708a09f
dir: /lib/iter/test/reverse.myr/
use std
use iter
const main = {
	var n
	n = 0
	for x : iter.byreverse([3, 2, 1, 0][:])
		std.assert(x == n, "invalid reversed value {}, expected {}", x, n)
		n++
	;;
}