| data class A(val x: String, val y: String) | |
| fun foo(a: A, block: (Int, A, String) -> String): String = block(1, a, "#") | |
| fun box(): String { | |
| val x = foo(A("O", "K")) { i, (x, y), v -> i.toString() + x + y + v } | |
| if (x != "1OK#") return "fail 1: $x" | |
| return "OK" | |
| } |