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Programming language: Go
License: MIT License
Tags: Messaging    
Latest version: v0.2.0

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README

Event

Build Status codecov Go Report Card GoDoc

This is package implements pattern-observer

Fast example

import (
    "github.com/agoalofalife/event"
)

func main() {
    // create struct
    e := event.New()

    // subscriber 
    e.Add("push.email", func(text string){
        // some logic 
    }, "text")

    // init event
    e.Fire("push.email") // or e.Go("push.email")
}

let us consider an example:

  • You must first create the structure
  • Next, the first argument declares the name of the event (string type), second argument executes when the event occurs, the third argument is passed a list of arguments, which are substituted in the parameters of the second argument.
  • In the end you need to run the event. There are two methods available "Go" and his alias "Fire"

The subscriber function method

type Email struct {
    count int
}
func (e *Email) Push() {
    e.count += 1
    fmt.Printf("Push email again, count %d \n", e.count)
}
func main() {
    e := event.New()

    email := new(Email)

    e.Add(email, email.Push)
    e.Fire(email)
    e.Fire(email)
}
// output 
// Push email again, count 1 
// Push email again, count 2

Bench

// create struct and add new event handler
BenchmarkAdd-8           1000000              1482 ns/op

// create struct and add new event handler and N run this handler
BenchmarkGo-8            5000000               339 ns/op
  • In this example we sign the event method structure

Read more information in examples :+1: