Golang Case

func TestGolang(t *testing.T) {
   fmt.Println(A())  // 0
   fmt.Println(*B()) // 1
   fmt.Println(C())  // 1
   fmt.Println(D())  // 0
}

func A() int {
   var result int
   defer func() {
      result++
   }()
   return result
}

func B() *int {
   var result int
   defer func() {
      result++
   }()
   return &result
}

func C() (result int) {
   defer func() {
      result++
   }()
   return result
}

func D() int {
   var result = 0
   defer func() {
      result++
   }()
   return result
}