Type 'AnyObject' does not conform to proto

问题:

I just installed Xcode 8 beta 2 and iOS 10 beta. I have an existing project where I updated from swift 2.3 to swift 3 based on a prompt from Xcode. I received an error with my code data code.

This was auto generated in the conversion from swift 2.3 to swift 3 by xcode

var fetchedResultsController: NSFetchedResultsController<AnyObject>!

the error I'm receiving is

 Type 'AnyObject' does not conform to protocol 'NSFetchRequestResult'

I tried to conform AnyObject

extension AnyObject: NSFetchRequestResult {}

But I receive another error

I am not sure what I need to do or if my fetchedResultsController needs to be changed in the first place.

ANSWER: var fetchedResultsController: NSFetchedResultsController<Content>!

回答1:

The Xcode converter likely was confused about what Entity you wanted to return in this fetched results controller. Replace AnyObject with the entity type you are fetching.

You should open a radar (bugreporter.apple.com) on this, since it should never suggest AnyObject here. At worst it should suggest NSManagedObject.