use std type t = struct	v1 : int	v2 : int	v3 : int;; const main = {	var v : t 	v.v1 = 2	v.v2 = 40	v.v3 = 10	match v	| [.v2 = x, .v1 = y, .v3 = 10]:			 std.exit(x + y)	| _:		std.die("Wat")	;;	std.exit(0)}