| 1 | import arrays |
| 2 | |
| 3 | fn test_main() { |
| 4 | mut rules := [][2]int{} |
| 5 | rules << [1, 2]! |
| 6 | rules << [2, 3]! |
| 7 | |
| 8 | common_rule := [1, 2]! |
| 9 | assert arrays.index_of_first(rules, fn [common_rule] (idx int, rule [2]int) bool { |
| 10 | return rule == common_rule |
| 11 | }) == 0 |
| 12 | |
| 13 | common_rule2 := [2, 3]! |
| 14 | assert arrays.index_of_first(rules, fn [common_rule2] (idx int, rule [2]int) bool { |
| 15 | return rule == common_rule2 |
| 16 | }) == 1 |
| 17 | } |
| 18 |