This is package implements pattern-observer
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"
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 // 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 👍