Challenge: write a reference counted slice that works as much as possible like a built-in slice

[Ola Fosheim Grøstad]

On Wednesday, 10 November 2021 at 20:35:57 UTC, Stanislav Blinov 
wrote:
> It's a huge win as it allows the language to mandate rules for 
> destructor elision, which C++ can't and won't do.

How come? In order to know that something has been moved, you 
would also know the state of the object, so I don't see how D get 
any advantage over C++ here. Unless you in the type system 
distinguish between active and inactive objects.