GoLang ⏱ setInterval alternative

setInterval.go

package main

import (
	"fmt"
	"reflect"
	"time"
)

// setInterval call p function every "interval" time
func setInterval(p interface{}, interval time.Duration) chan<- bool {
	ticker := time.NewTicker(interval)
	stopIt := make(chan bool)
	go func() {

		for {

			select {
			case <-stopIt:
				fmt.Println("stop setInterval")
				return
			case <-ticker.C:
				reflect.ValueOf(p).Call([]reflect.Value{})
			}
		}

	}()

  // return the bool channel to use it as a stopper
	return stopIt
}

func handler() {
	fmt.Printf("hello world \n")
}

func main() {
	fmt.Println("go sample started")

	// start the setInterval and call handler every 2 seconds
	stopper := setInterval(handler, 2*time.Second)
	fmt.Println("your go program ...")

  // avoid the unused variable warn:
	_ = stopper
  // to stop setInterval uncomment the next line:
	// stopper <- true

	// pause the console
	<-make(chan bool)

}

you can read more about it here https://safi-eddine-posts.herokuapp.com/2021-07-29_Go-setInterval-method-65ca8f8b69e6.html