Graphics Programs Reference
In-Depth Information
Figure 29.9 Adding a Core Data model file
In Nerdfeed.xcdatamodeld , add a new entity named Link and then add one String
attribute named urlString ( Figure 29.10 ).
Figure 29.10 The link entity
It will be BNRFeedStore 's job to manage interacting with Core Data (an external
source of data). In BNRFeedStore.h , import the header for Core Data and add a for-
ward declaration and a few new instance variables and methods.
#import <CoreData/CoreData.h>
@class RSSChannel;
 
 
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