neat example, thanks. It gives you a generic Null type that has a bool is-valid field. Very similar to the sql.Null{String,Int} types, but you don't have to declare each one. Kinda the point of generics :)

Nice. But I need to retrain myself to read Go code again, because

  func Make(type T)(v T) Null(T) {
  }

looks really confusing and unreadable to me - too many brackets...

I agree. I assume they avoided the standard <> brackets to keep things simple, but really it just makes it harder to parse visually.

I consider the parens () syntax much more readable than the brackets < >

Well, you can try to craft a generic function that returns a function that takes T and returns something of type T, and see how many () you gotta get...