nsdictionary

I'm trying to make sections in a table view based on the alphabet and sort my entries alphabetically under these sections. I have collected the first letter in every entry of bandsArray in bandsArrayIndex and I'm now trying to use NSPredicate to count how many of each letter there are. I'm doing this by following this guide . They are using an NSArray and I'm using an NSDictionary and can't seem to get it to work. Can anyone help me out? The application crashes when trying to show the view with the table view in it. In Debugger Console the following error is shown: * Terminating app due to

I have this simple loop in my program: for (Element *e in items) { NSDictionary *article = [[NSDictionary alloc] init]; NSLog([[e selectElement: @"title"] contentsText]); [article setValue: [[e selectElement: @"title"] contentsText] forKey: @"Title"]; [self.articles insertObject: article atIndex: [self.articles count]]; [article release]; } It is using the ElementParser library to make a dictionary of values from an RSS feed (there are other values besides "title" which I have omitted). self.articles is an NSMutableArray which is storing all of the dictionaries in the RSS document. In the end,

I'm trying to sort an array that would look something like this: (please ignore the fact these people are well past any living age! I just needed large numbers) NSDictionary *person1 = [NSDictionary dictionaryWithObjectsAndKeys:@"sam",@"name",@"28.00",@"age",nil]; NSDictionary *person2 = [NSDictionary dictionaryWithObjectsAndKeys:@"cody",@"name",@"100.00",@"age",nil]; NSDictionary *person3 = [NSDictionary dictionaryWithObjectsAndKeys:@"marvin",@"name",@"299.00",@"age",nil]; NSDictionary *person4 = [NSDictionary dictionaryWithObjectsAndKeys:@"billy",@"name",@"0.0",@"age",nil]; NSDictionary