Cannot inherit from non-open class 'CoreDataStack' outside of its defining module

This is for version 3.0 of Core Data by Tutorials

On page 183, it tells us to run unit tests…

Xcode 8 gives the following error:

cannot inherit from non-open class ‘CoreDataStack’ outside of its defining module

It looks like the Starter project may have an error. If you change

public class CoreDataStack {

to

open class CoreDataStack {

then all is well.

Credit where credit is due… I googled the error and found this [SO post] (http://stackoverflow.com/questions/38979371/cannot-inherit-from-non-open-class-swift) about the error.

Thanks,
Del

1 Like

Thanks for the update Del - I fixed up your link.

Looks like this is still an error in the 3.1 starter project…