Ref / NotNull struct

[Namespace]

> I think it's great! I'm planning on trying it out on a few 
> things and I'll let you know if I have any suggestions. I 
> _almost_ suggested Proxy earlier, but I had never used it and I 
> wasn't sure whether it was appropriate for the problem you were 
> having.

I would be glad if you will do this. :)

> Overall, I think a lot of people will get a lot of use out of 
> it. It's something I know people have been looking for, but I 
> think you'll have to save the link and when someone asks/talks 
> about NonNull references/pointers you can refer them here.

That's a good idea.