DIP1000

[Ola Fosheim Grøstad]

On Thursday, 23 June 2022 at 19:38:12 UTC, ag0aep6g wrote:
> ```d
> void connect(ref scope node a, return scope node* b)
> ```

Thanks, so the `return scope` means «allow escape», not 
necessarily return?

> But that only works for this very special case. It falls apart 
> when you try to add a third node. As far as I understand, 
> `scope` cannot handle linked lists. A `scope` pointer cannot 
> point to another `scope` pointer.

One can do two levels, but not three. Got it. Works for some 
basic data-structures.