$ go get github.com/thedevsaddam/retry

import "github.com/thedevsaddam/retry"

package main

import (
	"fmt"
	"time"

	"github.com/thedevsaddam/retry"
)

func main() {
	i := 1 // lets assume we expect i to be a value of 8
	err := retry.DoFunc(10, 1*time.Second, func() error {
		fmt.Printf("trying for: %dth time\n", i)
		i++
		if i > 7 {
			return nil
		}
		return fmt.Errorf("i = %d is still low value", i)
	})

	if err != nil {
		panic(err)
	}

	fmt.Println("Got our expected result: ", i)
}

package main

import (
	"errors"
	"log"
	"time"

	"github.com/thedevsaddam/retry"
)

func div(a, b float64) (float64, error) {
	if b == 0 {
		return 0, errors.New("Can not divide by zero")
	}
	return a / b, nil
}

func main() {
	a := 20.6
	b := 3.7 // if we assign 0.0 to b, it will cause an error and will retry for 3 times
	res, err := retry.Do(3, 5*time.Second, div, a, b)
	if err != nil {
		panic(err)
	}
	log.Println(res)
}