Mac Apps That Use Garbage Collection Must Move to ARC

[deadalnix via Digitalmars-d]

On Thursday, 26 February 2015 at 02:48:15 UTC, Walter Bright 
wrote:
> Writing a generational collector for D is possible right now 
> with no language changes, it's just that nobody has bothered to 
> do it. Don't need write barriers for it, either.
>

How are you planning to track assignment a pointer to the young 
generation in the old generation ? Because if you plan to rescan 
the whole old generation, this is not exactly a generational GC.