`restricted` member variables

[Mike Parker]

On Tuesday, 21 June 2022 at 01:17:14 UTC, Mike Parker wrote:
> On Tuesday, 21 June 2022 at 01:01:09 UTC, deadalnix wrote:
>
>> I'm pretty sure x can be encapsulated in some struct here.
>
> Yes, I did note that later in the post you just replied to :-) 
> Put it in a struct and then a different module. So `restricted` 
> is absolutely pointless because of that. It's the obvious 
> solution that I overlooked until I read your comment about two 
> classes bundled in one.

That said, spilling class internals out into a separate module is 
a bit "icky". Targeted invariants would be nice. Not a must have, 
probably a niche case, but definitely nice to have.