Example
package main
import (
"encoding/gob"
"fmt"
"log"
"os"
)
type User struct {
Username string
Password string
}
type Admin struct {
Username string
Password string
IsAdmin bool
}
type Deleter interface {
Delete()
}
func (u User) Delete() {
fmt.Println("User ==> Delete()")
}
func (a Admin) Delete() {
fmt.Println("Admin ==> Delete()")
}
func main() {
file, _ := os.Open("user.gob")
adminFile, _ := os.Open("admin.gob")
defer file.Close()
defer adminFile.Close()
gob.Register(User{}) // registering the type allows us to encode it
gob.Register(Admin{}) // registering the type allows us to encode it
var admin Deleter
var user Deleter
userDecoder := gob.NewDecoder(file)
adminDecoder := gob.NewDecoder(adminFile)
user = InterfaceDecode(userDecoder)
admin = InterfaceDecode(adminDecoder)
fmt.Println(user)
fmt.Println(admin)
}
func InterfaceDecode(decoder *gob.Decoder) Deleter {
var d Deleter
if err := decoder.Decode(&d); err != nil {
log.Fatal(err)
}
return d
}
