Swift + CoreData: Cannot Automatically Set Optional Attribute On Generated NSManagedObject Subclass

Question

I have a coredata entity named Record and has a property dateUpdated. I noticed that the generated NSManagedObject subclass has no optional mark (?)

CoreData

Answer 1

Workaround:

Yes this seems like a bug / limitation. Use non-scalar types to workaround this problem.

Optional attributes

• Check the optional check box
• Uncheck scalar check box

Non-Optional attributes

• Uncheck the optional check box
• Check scalar check box

Probable reason:

The Swift code gets translated into Objective-C and Objective-C doesn't support nil values for non-class types.