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Module Expression

Signature

include Core.Std.Applicative.S
type 'a t
val return : 'a -> 'a t
val apply : ('a -> 'b) t -> 'a t -> 'b t
val map : 'a t -> f:('a -> 'b) -> 'b t
val map2 : 'a t -> 'b t -> f:('a -> 'b -> 'c) -> 'c t
val map3 : 'a t -> 'b t -> 'c t -> f:('a -> 'b -> 'c -> 'd) -> 'd t
val all : 'a t list -> 'a list t
val both : 'a t -> 'b t -> ('a * 'b) t
module Applicative_infix : sig .. end
include module type of Applicative_infix
val (<*>) : ('a -> 'b) t -> 'a t -> 'b t

same as apply

val (<*) : 'a t -> unit t -> 'a t

same as apply

val (*>) : unit t -> 'a t -> 'a t
val field : 'a Field.t -> 'a t

Fails if it uses a field that is missing from the state.

val maybe_field : 'a Field.t -> 'a option t

Evaluates to None if the field is missing from the state. Never fails.

val variable : 'a Variable.t -> 'a t
module Args : Core.Std.Applicative.Args with type 'a arg := 'a t