On Tue, Mar 6, 2012 at 1:51 PM, Jan E. Schotsman <jesc...@xs4all.nl> wrote: > I have an array of progress values (number objects) for subprojects, from > which I calculate the overall progress . > The array is an atomic property of the project class. > > Is it safe to access this array from multiple threads, using methods like > objectAtIndex and replaceObjectAtIndex?
This is an NSMutableArray? No. The atomic only means it's safe to access the *property* from multiple threads. But it doesn't say anything about the thread safety of what you do with the object stored in the property. If you limit your array accesses to only the methods contained in NSArray then things are okay. But as soon as you start mixing any NSMutableArray methods the whole thing becomes unsafe (including those previously safe NSArray methods). _______________________________________________ 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
