golang json struct helper functions

pretty.go

// Prints objects into json pretty output
func PrettyStruct(data interface{}) (string, error) {
	val, err := json.MarshalIndent(data, "", "    ")
	if err != nil {
		return "", err
	}
	return string(val), nil
}

// pretty print coded byte in json format
func PrettyEncode(data interface{}, out io.Writer) error {
	enc := json.NewEncoder(out)
	enc.SetIndent("", "    ")
	if err := enc.Encode(data); err != nil {
		return err
	}
	return nil
}

// example usage: 
// printing a struct in json like format
res, err := PrettyStruct(mystruct)
if err != nil {
	log.Fatal(err)
}
fmt.Println(res)

// pretty print a []byte in json format
res, err := PrettyStruct(mybyte)
if err != nil {
	log.Fatal(err)
}
fmt.Println(res)