package main
import "fmt"
type User struct {
Name string
Age int
}
func (c User) GetAge() {
fmt.Println("Age:", c.Age)
}
func UpdateAge(c User, Age int) {
c.Age = Age
}
func main() {
c := User{"age", 20}
c.GetAge()
UpdateAge(c, 21)
c.GetAge()
}
但結果都是Age: 20 Age: 20
所以我們要用傳指標的方式，才會真正改變到原本的物件
package main
import "fmt"
type User struct {
Name string
Age int
}
func (c User) GetAge() {
fmt.Println("Age:", c.Age)
}
func UpdateAge(c *User, Age int) {
c.Age = Age
}
func main() {
c := User{"age", 20}
c.GetAge()
UpdateAge(&c, 21)
c.GetAge()
}
