drakbar/redux

redux implementation in Go

redux

This is a redux implementation in Go.

I hope this project can help you manage the complex update flow in Go.

Origin version

Install

$ go get github.com/dannypsnl/redux@v2.2.1

Usage

import (
    // must import, else go module would think following package is a module
    _ "github.com/dannypsnl/redux/v2"
    // v2 store
    "github.com/dannypsnl/redux/v2/store"
    // v2 rematch(optional)
    "github.com/dannypsnl/redux/v2/rematch"
)

Basic example

// As you can see, you don't need to checking nil or not now
// Now redux-go will initial the state with zero value of that type
func counter(state int, action string) int {
    switch action {
    case "INC":
        return state + 1
    case "DEC":
        return state - 1
    default:
        return state
    }
}

func main() {
    // redux/v2/store
    store := store.New(counter)
    store.Dispatch("INC")
    fmt.Printf("%d\n", store.StateOf(counter)) // should print out: 1
}

More stunning

func main() {
    counter := func(state, payload int) int {
        return state + payload
    }
    store := store.New(counter)
    store.Dispatch(100)
    store.Dispatch(-50)
    fmt.Printf("%d\n", store.StateOf(counter)) // should print out: 50
}

And more...

type CountingModel struct {
	rematch.Reducer
	State int
}

func (cm *CountingModel) Increase(s, payload int) int {
	return s + payload
}

func (cm *CountingModel) Decrease(s, payload int) int {
	return s - payload
}

func main() {
	c := &CountingModel{
		State: 0,
	}
	store := store.New(c)
	store.Dispatch(c.Action(c.Increase).With(100))
	store.Dispatch(c.Action(c.Decrease).With(50))

	fmt.Printf("result: %d\n", store.StateOf(c)) // expect: 50
}

Then let's have a party

type CountingModel struct {
	Reducer
	State int

	Increase *rematch.Action `action:"IncreaseImpl"`
}

func (c *CountingModel) IncreaseImpl(s, payload int) int {
	return s + payload
}

func main() {
	c := &CountingModel {
		State: 0,
	}
	store := store.New(c)
	store.Dispatch(c.Increase.With(30))
	store.Dispatch(c.Increase.With(20))

	fmt.Printf("result: %d\n", store.StateOf(c)) // expect: 50
}