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|
module type S = sig
@BEGIN_FROM_4_08_0@
type 'a t = 'a option =
| None
| Some of 'a
@END_FROM_4_08_0@
@BEGIN_BEFORE_4_08_0@
type 'a t = 'a option =
| None
| Some of 'a
@END_BEFORE_4_08_0@
(** @since 4.08.0: type 'a t = 'a option =
| None
| Some of 'a
*)
val none : 'a option
(** @since 4.08.0: val none : 'a option *)
val some : 'a -> 'a option
(** @since 4.08.0: val some : 'a -> 'a option *)
val value : 'a option -> default:'a -> 'a
(** @since 4.08.0: val value : 'a option -> default:'a -> 'a *)
val get : 'a option -> 'a
(** @since 4.08.0: val get : 'a option -> 'a *)
val bind : 'a option -> ('a -> 'b option) -> 'b option
(** @since 4.08.0: val bind : 'a option -> ('a -> 'b option) -> 'b option *)
val join : 'a option option -> 'a option
(** @since 4.08.0: val join : 'a option option -> 'a option *)
val map : ('a -> 'b) -> 'a option -> 'b option
(** @since 4.08.0: val map : ('a -> 'b) -> 'a option -> 'b option *)
val fold : none:'a -> some:('b -> 'a) -> 'b option -> 'a
(** @since 4.08.0: val fold : none:'a -> some:('b -> 'a) -> 'b option -> 'a *)
val iter : ('a -> unit) -> 'a option -> unit
(** @since 4.08.0: val iter : ('a -> unit) -> 'a option -> unit *)
val is_none : 'a option -> bool
(** @since 4.08.0: val is_none : 'a option -> bool *)
val is_some : 'a option -> bool
(** @since 4.08.0: val is_some : 'a option -> bool *)
val equal : ('a -> 'a -> bool) -> 'a option -> 'a option -> bool
(** @since 4.08.0:
val equal : ('a -> 'a -> bool) -> 'a option -> 'a option -> bool *)
val compare : ('a -> 'a -> int) -> 'a option -> 'a option -> int
(** @since 4.08.0:
val compare : ('a -> 'a -> int) -> 'a option -> 'a option -> int *)
@BEGIN_FROM_4_08_0@
val to_result : none:'e -> 'a option -> ('a, 'e) result
@END_FROM_4_08_0@
@BEGIN_BEFORE_4_08_0@
val to_result : none:'e -> 'a option -> ('a, 'e) Stdcompat__pervasives.result
@END_BEFORE_4_08_0@
(** @since 4.08.0: val to_result : none:'e -> 'a option -> ('a, 'e) result
*)
val to_list : 'a option -> 'a list
(** @since 4.08.0: val to_list : 'a option -> 'a list *)
@BEGIN_FROM_4_08_0@
val to_seq : 'a option -> 'a Seq.t
@END_FROM_4_08_0@
@BEGIN_BEFORE_4_08_0@
val to_seq : 'a option -> 'a Stdcompat__seq.t
@END_BEFORE_4_08_0@
(** @since 4.08.0: val to_seq : 'a option -> 'a Seq.t
*)
end
|
