Le 9 sept. 2013 à 09:58, Tom Davie <tom.da...@gmail.com> a écrit :
> > On 9 Sep 2013, at 09:44, Kyle Sluder <k...@ksluder.com> wrote: > >> Thirded. I thought I wouldn't like it. As soon as I didn't have to manage >> retains and releases of temporary objects, the discipline completely left my >> mind. Now whenever I go back to non-ARC code I invariably make a ton of >> memory management errors, most of which are caught by the analyzer. >> >> --Kyle Sluder >> >> On Sep 8, 2013, at 11:18 PM, Alex Kac <a...@webis.net> wrote: >> >>> Bingo. We’ve been working with Cocoa/Obj-C for many years, and still we’d >>> find weird errors that would be caused by some over-released object. We cut >>> a ton of code with ARC, and in the end we saw reliability go up and >>> actually even some performance. >>> >>> ARC is a win. The only place it really got a bit hairy was CF objects. I >>> wish ARC would work with them a bit more. >>> >>> On September 8, 2013 at 11:56:10 PM, Jens Alfke (j...@mooseyard.com) wrote: >>> >>> They’re a _lot_ easier. It might not look that way when you’re reading >>> about all the details, or converting existing code, because then you’re >>> focusing on the rare edge cases. But for the most part when actually coding >>> you can simply ignore ref-counting. Your code becomes more compact and >>> readable, and you’re less likely to make mistakes. > > I *completely* agree with you with regards to memory management being hard to > get reliably right (not hard to get right, hard to get reliably right), and > weird errors all the time caused by memory management going wrong. ARC is a > major boon in this regard. > > However, I have to say, I have had the complete opposite experience with > regards to performance. Having measured various projects before and after > converting to ARC, I have seen numbers between 30% and 100% slowdown with > ARC. The average is probably around 50%. I have never seen performance > improve when using ARC. And does the profiler explicitly shows that ARC runtime code is the culprit ? -- Jean-Daniel _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
