On Borrow Checking

[Richard (Rikki) Andrew Cattermole]

On 01/05/2025 2:28 PM, Richard (Rikki) Andrew Cattermole wrote:
> ```d
> void func(RC input) {
>      input.add; // elidable
>      scope(exit)
>          input.sub; // elidable
> 
>      if (condition) {
>          input.sub;
>          input = RC(...);
>          input.add;
>      }
> }
> ```

Ok that example is bad, no sub oops.

I came up with this optimization solution a long time ago and may have 
forgot a few things.