On Aug 6, 2013, at 8:39 AM, Nick Rogers <roger...@mac.com> wrote: > Hi, > > Please look at the following situations: > > 1. Created a mutable array in main thread, can I read its values in a > secondary thread safely, while no other thread is modifying this mutable > array?
Yes, but the second half of that sentence is the tricky part. One typically uses a lock to ensure that no other threads are modifying the array. > > 2. I need to add objects to this mutable array from a secondary thread, and > no other thread is modifying it. Can I simply add an object like, [array > addObject:obj]; or if this is wrong how to achieve the same? The object to > add is mostly NSString or NSNumber or a mutable dictionary of NSString and > NSNumber. Yes, NSArray can be used from any thread, as long as if one thread is modifying the array it is the only thread accessing the array. Again, you need to use a synchronization primitive to ensure this is the case. --Kyle Sluder _______________________________________________ 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
