On May 25, 2014, at 2:07 AM, Jamie Ojomoh <jamie.ojo...@gmail.com> wrote:
> So if I use alloc/init then autoreleasepool doesn't work? No, I meant that the string hasn’t been autoreleased at all yet, so the pool isn’t going to release it when it exits. The pool “works”, it’s just not necessary. > Or don't I need autoreleasepool at all? You don’t need it. You only need an autorelease pool if (a) You’re running a lengthy loop that allocates/autoreleases objects on every iteration; wrapping the body in a pool, keeps those objects from building up (b) You’re implementing a C callback, i.e. from something like a CF or Unix API. > Is there any difference in memory releasing / ARC between a class and a > instance method? No. Those are totally unrelated concepts. > And why is it that memory automatically gets released properly when an > application quits, It’s part of the job of an operating system to clean up resources left behind by processes. > but when a class is released any memory that hasn't been > freed or released properly hangs around forever? Is this not something > that can be asked here? Classes don’t get released, objects do. I’m not quite sure what you’re asking. Within a process, individual memory blocks have to be explicitly freed. NSObject does this by keeping track of reference counts and freeing the memory when the ref-count drops to zero. If an object isn’t released enough times, it’ll stay around until the process quits. Releasing/freeing objects is kind of like cleaning up your room after you’re done using things; you have to remember to put each thing away. The process quitting is like your house getting bulldozed. Everything that was in it is gone, there’s nothing left until a new house gets built. Anyway, YOU ARE OVERTHINKING THIS. Stop trying to figure out when things are getting released — that’s ARC’s job. Just write your code. —Jens _______________________________________________ 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
