fn test_main() { mut l_map := map[int]bool{} mut r_map := map[int]bool{} l_map[0] = false l_map[1] = false r_map[0] = true r_map[1] = true l_map, r_map = r_map.move(), l_map.move() assert l_map[0] == true assert l_map[0] == true assert r_map[0] == false assert r_map[0] == false }