Neither... NSPredicate and NSExpression are defined in Foundation - they simply describe a query. They evaluate on NSObjects (NSString, NSArray, NSNumber, NSDictionary etc.). A reference is http://cocoadevcentral.com/articles/000086.php (page 14).
Storage (Core Data) is not handled by Foundation. NSManagedObject* and NSPersistent* are part of a separate CoreData framework on MacOS X. At the moment I have not started to include anything from CoreData => http://developer.apple.com/documentation/Cocoa/Reference/CoreData_ObjC/index.html But if I would, I would use SQLite and XML since they are directly supported by the API (NSPersistentStoreCoordinator: NSSQLiteStoreType, NSXMLStoreType). -- hns _______________________________________________ Discuss-gnustep mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnustep
