sig type ('a, 'e) t = ('a, 'e) Stdlib.result = Ok of 'a | Error of 'e val ok : 'a -> ('a, 'e) Stdlib.result val error : 'e -> ('a, 'e) Stdlib.result val value : ('a, 'e) Stdlib.result -> default:'a -> 'a val get_ok : ('a, 'e) Stdlib.result -> 'a val get_error : ('a, 'e) Stdlib.result -> 'e val bind : ('a, 'e) Stdlib.result -> ('a -> ('b, 'e) Stdlib.result) -> ('b, 'e) Stdlib.result val join : (('a, 'e) Stdlib.result, 'e) Stdlib.result -> ('a, 'e) Stdlib.result val map : ('a -> 'b) -> ('a, 'e) Stdlib.result -> ('b, 'e) Stdlib.result val map_error : ('e -> 'f) -> ('a, 'e) Stdlib.result -> ('a, 'f) Stdlib.result val fold : ok:('a -> 'c) -> error:('e -> 'c) -> ('a, 'e) Stdlib.result -> 'c val iter : ('a -> unit) -> ('a, 'e) Stdlib.result -> unit val iter_error : ('e -> unit) -> ('a, 'e) Stdlib.result -> unit val is_ok : ('a, 'e) Stdlib.result -> bool val is_error : ('a, 'e) Stdlib.result -> bool val equal : ok:('a -> 'a -> bool) -> error:('e -> 'e -> bool) -> ('a, 'e) Stdlib.result -> ('a, 'e) Stdlib.result -> bool val compare : ok:('a -> 'a -> int) -> error:('e -> 'e -> int) -> ('a, 'e) Stdlib.result -> ('a, 'e) Stdlib.result -> int val to_option : ('a, 'e) Stdlib.result -> 'a option val to_list : ('a, 'e) Stdlib.result -> 'a list val to_seq : ('a, 'e) Stdlib.result -> 'a Stdlib.Seq.t end