Nsfetchedresultscontroller not updating

Previously I touched on how to seed a Core Data database, and how to take that data and display it in a table view with an NSFetched Results Controller.As with the previous posts, I’m providing an example XCode project over at Git Hub, so feel free to follow along with the live working example: In this installment to the series, I want to answer the question, “How do I update the rows in a table view when I add or remove objects from the Core Data database?And, this is where the NSFetched Results Controller class comes to the picture!

It is fine and good for the app, but when you’ll have the complex amount of data to load, this process will be slower and it could have a detrimental impact on the users.

So, the general structure of the // MARK: NSFetched Results Controller Delegate methods public func controller Will Change Content(controller: NSFetched Results Controller) public func controller( controller: NSFetched Results Controller, did Change Object an Object: Any Object, at Index Path index Path: NSIndex Path?

) public func controller( controller: NSFetched Results Controller, did Change Section section Info: NSFetched Results Section Info, at Index section Index: Int, for Change Type type: NSFetched Results Change Type) public func controller(controller: NSFetched Results Controller, section Index Title For Section Name section Name: String) - This is the method that governs how we want to handle the rows in a table view when the synchronization would require inserting rows, updating existing ones, removing them, or reordering them.

I’ll give you the implementation and then point out a couple of “gotchas” and expound a little more.

Recall that we’re working with a sample app named “Zootastic”, so if you see references to public func controller( controller: NSFetched Results Controller, did Change Object an Object: Any Object, at Index Path index Path: NSIndex Path?

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