Module `Ocsipersist_lib.Ref_json`

Type-safe persistent references using Deriving_Json for serialisation.

Parameters

module Functorial : Sigs.FUNCTORIAL

Signature

type 'a t

The type of (persistent or not) references

val ref : ?persistent:string -> 'a Deriving_Json.t -> 'a -> 'a t

ref ?persistent json default creates a reference. If optional parameter ?persistent is absent, the reference will not be persistent (implemented using OCaml references). Otherwise, the value of persistent will be used as key for the value in the persistent reference table. If the reference already exists, the current value is kept.

val get : 'a t -> 'a Lwt.t

Get the value of a reference

val set : 'a t -> 'a -> unit Lwt.t

Set the value of a reference