> Execute a fetch for the entity in which you're interested, and count the > returned array. > ________________ > > My question is: what is the most efficient fetch to pose given that every > fetch is IO.
Yes. > A given entity might have a lot of records so an array COULD be an > unnecessarily large transaction... Except that, unless you're accessing attributes (which causes the entire instance to be 'faulted in'), you're only getting an empty, unpopulated instance - a placeholder ... a fault. It's pretty damned quick, too (see the many previous 'Core Data performance' related threads in the list archives). Resist premature optimization (or 'optimisation' for our European friends) ... it is the root of all time-wasting evil and a brutal murderer of all that is precious. Unless of course you're at the optimization/optimisation faze (fase?) of your project ... -- I.S. _______________________________________________ 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 [EMAIL PROTECTED]
