Mac Apps That Use Garbage Collection Must Move to ARC

[Martin Nowak via Digitalmars-d]

On 02/26/2015 05:08 AM, Walter Bright wrote:
> 
> A lot of benefit simply came from compacting all the remaining used
> allocations together, essentially defragging the memory.

Compacting is indeed easy once we have a precise GC, and can be done
partially, i.e. objects pointed to by the stack/register are pinned.