> ARC has neither of those disadvantages and so provides convincing alternative to GC, and AFAIK is the first and unique to do so. I love what Apple has done w

> ARC has neither of those disadvantages and so provides convincing alternative to GC, and AFAIK is the first and unique to do so. I love what Apple has done with ARC: they've taken a very inefficient approach to garbage collection, one which has repeatedly shown to be the "worst case" algorithm with the worst performance characteristics, and then proceeded to convince legions of developers that that same approach is actually the best one.