package bonsai

  1. Overview
  2. Docs
package bonsai
Legend:
Library
Module
Module type
Parameter
Class
Class type
type 'a t

A value of type 'a Value.t represents a value that may change during the lifetime of the program. For those familiar with the Incremental library, this type is conceptually very similar to Incr.t. The main method by which you acquire values of type Value.t is by using the let%sub syntax extension.

val c : int Computation.t

let%sub x = c in
(* [x] has type [int Value.t] here *)

In the example above, we run a computation c and store the result of that computation in x which has type Value.t.

Value.t is an applicative, which means that you can combine multiple Values into one by using Let_syntax:

val a : int Value.t
val b : int Value.t

let open Let_syntax in
let%map a = a and b = b in
a + b
include Core.Applicative.S with type 'a t := 'a t
val return : 'a -> 'a t
val map : 'a t -> f:('a -> 'b) -> 'b t
val both : 'a t -> 'b t -> ('a * 'b) t
val (<*>) : ('a -> 'b) t -> 'a t -> 'b t
val (<*) : 'a t -> unit t -> 'a t
val (*>) : unit t -> 'a t -> 'a t
val (>>|) : 'a t -> ('a -> 'b) -> 'b t
val apply : ('a -> 'b) t -> 'a t -> 'b t
val map2 : 'a t -> 'b t -> f:('a -> 'b -> 'c) -> 'c t
val all : 'a t list -> 'a list t
val all_unit : unit t list -> unit t
module Applicative_infix : sig ... end
val map3 : 'a1 t -> 'a2 t -> 'a3 t -> f:('a1 -> 'a2 -> 'a3 -> 'b) -> 'b t
val map4 : 'a1 t -> 'a2 t -> 'a3 t -> 'a4 t -> f:('a1 -> 'a2 -> 'a3 -> 'a4 -> 'b) -> 'b t
val map5 : 'a1 t -> 'a2 t -> 'a3 t -> 'a4 t -> 'a5 t -> f:('a1 -> 'a2 -> 'a3 -> 'a4 -> 'a5 -> 'b) -> 'b t
val map6 : 'a1 t -> 'a2 t -> 'a3 t -> 'a4 t -> 'a5 t -> 'a6 t -> f:('a1 -> 'a2 -> 'a3 -> 'a4 -> 'a5 -> 'a6 -> 'b) -> 'b t
val map7 : 'a1 t -> 'a2 t -> 'a3 t -> 'a4 t -> 'a5 t -> 'a6 t -> 'a7 t -> f:('a1 -> 'a2 -> 'a3 -> 'a4 -> 'a5 -> 'a6 -> 'a7 -> 'b) -> 'b t
val cutoff : equal:('a -> 'a -> bool) -> 'a t -> 'a t

A Value.t transformed by cutoff will only trigger changes on its dependents when the equality of the contained value has changed.

OCaml

Innovation. Community. Security.

GitHub Discord Twitter Peertube RSS
About
Changelog Releases Industrial Users Academic Users Why OCaml
Ecosystem
Packages Community Events OCaml Planet Jobs
Resources
Install OCaml Get Started Platform Tools Language Manual Standard Library API Books Exercises Papers OCaml Playground Logo
Policies
Carbon Footprint Governance Privacy Code of Conduct