Why can't I use “description” as an attribute name for a Core Data entity?

Question

I have a simple Core Data entity that had a string attribute named \"description\". The program crashes when it hits:

valueForKey:@\"description\"
         


        

Answer 1

description isn't a reserved keyword in CoreData, but it's a property on all Objective-C objects inherently. It's part of the NSObject class.

http://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Protocols/NSObject_Protocol/Reference/NSObject.html#//apple_ref/occ/intfm/NSObject/description