go 指標變數操作即使不加 * ，似乎也可以直接運作...

func_with_point.go

package main

import("fmt")

type Student struct {
  id int64
  name string
}

func main() {
  s := Student { 123, "Yoda" }
  fmt.Printf("s value is %s, address is %p, and type is %T\n", s, &s, s)
  updateStudent(&s)
  fmt.Printf("s value is %s, address is %p, and type is %T\n", s, &s, s)
}
/* 輸出
s value is {%!s(int64=123) Yoda}, address is 0xc420096040, and type is main.Student
s value is 0xc420096040, address is 0xc42009a020, object is &{456 Vader}, and type is *main.Student
s value is {%!s(int64=456) Vader}, address is 0xc420096040, and type is main.Student
*/

func updateStudent(s *Student) {
  // 給他用正宗的指標取值方式
  (*s).name = "Vader"
  // OverHere!!!
  // 但這麼做實際上也可以直接操作地址參考的內容，而且大多的 go 範例都這樣寫，不明絕厲
  s.id = 456
  fmt.Printf("s value is %p, address is %p, object is %v, and type is %T\n", s, &s, s, s)
}