Marshaling in go

main.go

package main

import (
	"encoding/json"
	"fmt"
	"log"
	"time"
)

type User struct {
	Id       int64
	Name     string
	LastName string
	CFK      int64
	Card     CreditCard
}

type CreditCard struct {
	Serial int64
	Name   string
	Until  time.Time
	Code   string
}

func main() {
	//JSON ENCODE
	user := User{
		Id:       1,
		Name:     "Peter",
		LastName: "Preek",
		CFK:      12,
		Card: CreditCard{
			Serial: 1212871265128712,
			Name:   "Peter Preek",
			Until:  time.Now(),
			Code:   "064",
		},
	}
	u, err := json.Marshal(user)
	if err != nil {
		log.Fatal(err)
	}
	fmt.Printf("json string:%s\n", u)

	//JSON DECODE

	var oldUser User
	err = json.Unmarshal(u, &oldUser)
	fmt.Printf("%v", oldUser)
}