Introducing Nullable Reference Types in C#. Is there hope for D, too?

[Dukc]

On Monday, 20 November 2017 at 10:45:20 UTC, Dukc wrote:
> A type that wraps a reference type behaving like a value type. 
> Default initialized value and what to do on copy would be 
> passed as template parameters. Perhaps I should try...

Just realized Unique!T is already pretty close. A few 
(non-breaking) modifications on it could do the trick.