Assume I only have a reflect.Type t:
fmt.Println(t) //prints lib.Counter
I would like to get pointer type to this type, such that:
fmt.Println(ptrT) //prints *lib.Counter
How can I do this? t can be of any type, not only lib.Counter.
Also, what if I want to do vice versa? Like getting lib.Counter from *lib.Counter?
>Solution :
You can use reflect.PointerTo.
To get the non-pointer type again, you can use Type.Elem().
thing := Thing{}
ptrThing := &Thing{}
thingType := reflect.TypeOf(thing)
fmt.Println(thingType) // main.Thing
thingTypeAsPtr := reflect.PointerTo(thingType)
fmt.Println(thingTypeAsPtr) // *main.Thing
ptrThingType := reflect.TypeOf(ptrThing)
fmt.Println(ptrThingType) // *main.Thing
ptrThingTypeAsNonPtr := ptrThingType.Elem()
fmt.Println(ptrThingTypeAsNonPtr) // main.Thing
Working example: https://go.dev/play/p/29eXtdgI9Xf