go_passby_ref_or_value.go

type Student struct {
    Name string
}

func (s Student) Display(prefix string) {
    fmt.Printf("[%s] I'm %s\n", prefix, s.Name)
}

func ChangeStudentV3(s *Student) {
    // s.Name = "Kane"
    s = &Student{"new name"}
    s.Display("Func")
}

func main() {
    s := Student{"Joe"}
    s.Display("Main")
    ChangeStudentV3(&s)
    s.Display("Main")
}

====== OUTPUT ======
[Main] I'm Joe
[Func] I'm new name
[Main] I'm Joe