store

An immutable store structure, with the ability to add subscribers. Subscribe with callbacks that will be called when a set or update is called on a store. Checkout the mutable version, mut_cell with a mutable store that changes the value in place.

Install

gleam add store@1

import store
import gleam/int
import gleam/io

pub fn main() {
  let cell = store.make(10)

  let #(cell, unsub) =
    cell
    |> store.subscribe(fn(value) {
      { "value: " <> value |> int.to_string } |> io.println
    })

  let cell = cell |> store.set(20)

  let cell = unsub(cell)

  let cell = cell |> store.set(30)

  cell
  |> store.get
  |> int.to_string
  |> io.println
}

Further documentation can be found at https://hexdocs.pm/store.