Saving

The next puzzle piece is a method called whenever you would like to save changes from the _context to the _store. This is as easy as sending the context a save: message, as shown in Listing 1.9. This method will be placed in a new SAVING section.

Listing 1.9 CoreDataHelper.m: SAVING

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#pragma mark - SAVING- (void)saveContext {if (debug==1) {    NSLog(@"Running %@ '%@'", self.class, NSStringFromSelector(_cmd));}    if ([_context hasChanges]) {        NSError *error = nil;        if ([_context save:&error]) {            NSLog(@"_context SAVED changes to persistent store");        } else {            NSLog(@"Failed to save _context: %@", error);        }    } else {        NSLog(@"SKIPPED _context save, there ...

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