package main

import (
	"fmt"
	"time"
	"errors"
)

type Func func() error

func Retry(n int, between time.Duration, f Func){
	var i int = 1

	for {
		err := f()
		if err == nil {
			return
		}

		if i == n {
			return
		}

		<-time.After(between)

		i++
	}
}

func main() {
	f := func() error {
		fmt.Println("Hello, playground")
		return errors.New("")
	}

	Retry(5, 3 * time.Second, f)
}