2014/10/15 下午 10:12:32

iphone Programming Glossary: performblock

Core Data could not fullfil fault for object after obtainPermanantIDs

http://stackoverflow.com/questions/11321717/core-data-could-not-fullfil-fault-for-object-after-obtainpermanantids

level MOC you should effectively have something like this with appropriate error handling of course ... backgroundMoc performBlock ^ backgroundMoc obtainPermanentIDsForObjects backgroundMoc.insertedObjects.allObjects error 0 backgroundMoc save 0 mainMoc.. obtainPermanentIDsForObjects backgroundMoc.insertedObjects.allObjects error 0 backgroundMoc save 0 mainMoc performBlock ^ mainMoc save 0 masterMoc performBlock ^ masterMoc save 0 There are some other games you can play if you want. Provide.. backgroundMoc.insertedObjects.allObjects error 0 backgroundMoc save 0 mainMoc performBlock ^ mainMoc save 0 masterMoc performBlock ^ masterMoc save 0 There are some other games you can play if you want. Provide a category on NSManagedObject similar..

NSManagedObjectContext performBlockAndWait: doesn't execute on background thread?

http://stackoverflow.com/questions/11831946/nsmanagedobjectcontext-performblockandwait-doesnt-execute-on-background-thread

performBlockAndWait doesn't execute on background thread I have an NSManagedObjectContext declared like so NSManagedObjectContext backgroundMOC.. so its tasks should be run on a background thread. I have the following code void testThreading ok self.backgroundMOC performBlock ^ assert NSThread isMainThread CRASH self.backgroundMOC performBlockAndWait ^ assert NSThread isMainThread Why does calling.. code void testThreading ok self.backgroundMOC performBlock ^ assert NSThread isMainThread CRASH self.backgroundMOC performBlockAndWait ^ assert NSThread isMainThread Why does calling performBlockAndWait execute the task on the main thread rather than..

Blocks instead of performSelector:withObject:afterDelay: [duplicate]

http://stackoverflow.com/questions/4007023/blocks-instead-of-performselectorwithobjectafterdelay

a new method every time. Is it possible to use blocks instead of this Basically I'm looking for a method like self performBlock ^ some code afterDelay 0.1 That would be really useful to me. iphone objective c cocoa touch ios objective c blocks share.. in way to do that but it's not too bad to add via a category @implementation NSObject PerformBlockAfterDelay void performBlock void ^ void block afterDelay NSTimeInterval delay block block copy autorelease self performSelector @selector fireBlockAfterDelay..

Crash when adding persistent store (iCloud enabled) in app delegate

http://stackoverflow.com/questions/8021753/crash-when-adding-persistent-store-icloud-enabled-in-app-delegate

moc self managedObjectContext if self.notificationArray.count 0 for NSNotification note in _notificationArray moc performBlock ^ self mergeiCloudChanges note forContext moc _notificationArray removeAllObjects moc performBlock ^ self mergeiCloudChanges.. moc performBlock ^ self mergeiCloudChanges note forContext moc _notificationArray removeAllObjects moc performBlock ^ self mergeiCloudChanges notification forContext moc else moc performBlock ^ self mergeiCloudChanges notification forContext.. removeAllObjects moc performBlock ^ self mergeiCloudChanges notification forContext moc else moc performBlock ^ self mergeiCloudChanges notification forContext moc else if _notificationArray nil _notificationArray NSMutableArray..

Core Data's NSPrivateQueueConcurrencyType and sharing objects between threads

http://stackoverflow.com/questions/8637921/core-datas-nsprivatequeueconcurrencytype-and-sharing-objects-between-threads

data on a background thread by initializing the MOC using NSPrivateQueueConcurrencyType and then doing the fetch in performBlock One of the rules of thumb of Core Data has been that you can not share a managed object between threads queues. Is it still.. thumb of Core Data has been that you can not share a managed object between threads queues. Is it still the case with performBlock Is the following context performBlock ^ fetch request code NSArray results context executeFetchRequest request error nil.. can not share a managed object between threads queues. Is it still the case with performBlock Is the following context performBlock ^ fetch request code NSArray results context executeFetchRequest request error nil dispatch_async dispatch_get_main_queue..

Possible to pass [self anyFunction] in blocks without __weak object (iOS 5 + ARC)

http://stackoverflow.com/questions/9003600/possible-to-pass-self-anyfunction-in-blocks-without-weak-object-ios-5-arc

The blocks which throw up the error are ones where you capture the objects that own the block. For example object performBlock ^ object performSomeAction Will raise a warning or self performBlock ^ self doSomething Will raise a warning but self performBlock.. objects that own the block. For example object performBlock ^ object performSomeAction Will raise a warning or self performBlock ^ self doSomething Will raise a warning but self performBlock ^ object doSomething No problem here Because an object retains.. ^ object performSomeAction Will raise a warning or self performBlock ^ self doSomething Will raise a warning but self performBlock ^ object doSomething No problem here Because an object retains its blocks and a block retains it's objects. So in both these..