promise

README

Go Promise 🐰

Manage async flow as a javascript person

How to use

package main

import (
	"errors"
	"fmt"
	"net/http"

	"github.com/igorhalfeld/go-promise"
)

func main() {
	p := promise.New(func(resolve func(interface{}), reject func(error)) {
		resp, err := http.Get("http://gobyexample.com")
		if err != nil {
			panic(err)
		}
		defer resp.Body.Close()

		if resp.StatusCode == 200 {
			resolve(resp.Status)
		} else {
			reject(errors.New("ERRR"))
		}
	})

	p.Then(func(value interface{}) {
		fmt.Println("Success", value)
	}).Catch(func(err error) {
		fmt.Println("Error", err)
	})

	p.Wait()
}

Contributors

Breno Andrade	João Pedro

Documentation

Index

• type Promise
  • func New(fn func(func(interface{}), func(error))) *Promise
  • func (p *Promise) Catch(failure func(error)) *Promise
  • func (p *Promise) Then(success func(interface{})) *Promise
  • func (p *Promise) Wait()

Types

type Promise

type Promise struct {
	// contains filtered or unexported fields
}

Promise represents a promise struct

func New

func New(fn func(func(interface{}), func(error))) *Promise

New represents a new instance of Promise struct

func (*Promise) Catch

func (p *Promise) Catch(failure func(error)) *Promise

Catch represents a next chain of failure flow

func (*Promise) Then

func (p *Promise) Then(success func(interface{})) *Promise

Then represents a next chain of success flow

func (*Promise) Wait

func (p *Promise) Wait()