As you can read in the blog too, the developer documentation of dispatch_once states:
"The predicate must point to a variable stored in global or static scope. The result of using a predicate with automatic or dynamic storage is undefined." so, no, you can not. Actually it works most of the time, but you can not rely on it... Cheers, Jörg On Nov 12, 2012, at 3:33 PM, Tom Davie <tom.da...@gmail.com> wrote: > > On 12 Nov 2012, at 14:18, Joerg Simon <j_si...@mac.com> wrote: > >> You can use dispatch_sync. The blog post of oliver dobnigg (cocoanetics) >> summs that up quite nicely: >> http://www.cocoanetics.com/2012/02/threadsafe-lazy-property-initialization/ > > Or you can use dispatch_once, but make sure the once token is an ivar, unlike > I did. > > Tom Davie _______________________________________________ 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
