Core Data Concurrency on iOS 9

Question

If I create a NSManagedObjectContext on the main thread with NSMainQueueConcurrencyType must I use performBlock() method for all the save and performFetch methods. IE is it possible to do the following:

do {
    managedObjectContext.save()
} catch let error as NSError {
    print(error)
}

or should I always do this:

managedObjectContext.performBlock({
    do {
        managedObjectContext.save()
    } catch let error as NSError {
        print(error)
    }
})

If I understand the documentation correctly I always have to use performBlock() or performBlockAndWait() but in the template code from XCode 7 they are not using blocks. Any help is appreciated!

Answer 1

如果您已经在主线程中，有一个NSMainQueueConcurrencyType情况下，你不需要使用performBlock 。