stdcompat

Compatibility module for OCaml standard library
Library stdcompat
Module Stdcompat . Stdlib . Option
type 'a t = 'a option =
| None
| Some of 'a
  • 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

val to_result : none:'e -> 'a option -> ( 'a, 'e ) result
  • 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
val to_seq : 'a option -> 'a Seq.t
  • since 4.08.0: val to_seq : 'a option -> 'a Seq.t