Thanks for your answer - I'll check it out. Eric
On Wed, Jul 6, 2011 at 10:54 AM, Fritz Anderson <fri...@manoverboard.org> wrote: > On 6 Jul 2011, at 7:38 AM, Eric E. Dolecki wrote: > >> I am wondering if I need to recreate MPMediaQuery each time I want to >> use it and am changing grouping type and filter predicates... or can I >> simply create that once and then change filters, etc. on it. Wondering >> if it would speed my code up. > > MPMediaQuery seems to be mutable. You can add and remove filters. The ability > to remove filters doesn't make sense to me unless you can reuse the query. I > don't know from experience. Maybe if you tried it, and checked for accuracy, > leaks, and zombies, you'd know. > > But if you're wondering whether it would speed your code up, you can find out > for yourself: Have Instruments profile it as-is. If it turns out that the > alloc/init of queries takes up a significant part of your execution time (I'd > be surprised it it did), then you can try caching instances, and seeing for > yourself whether it helps. > > Don't waste your time guessing what your app needs. Measure. > > — F > > _______________________________________________ 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: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
