Question

Is there any way to access an NSArray element with valueForKeyPath? Google’s reverse geocoder service, for example, returns a very complex data structure. If I want to get the city, right now I have to break it into two calls, like this:

NSDictionary *address = [NSString stringWithString:[[[dictionary objectForKey:@"Placemark"] objectAtIndex:0] objectForKey:@"address"]];
NSLog(@"%@", [address valueForKeyPath:@"AddressDetails.Country.AdministrativeArea.SubAdministrativeArea.Locality.LocalityName"]);

Just wondering if there’s a way to shoehorn the objectAtIndex: call into the valueForKeyPath string. I tried a javascript-esque formulation like @”Placemark[0].address” but no dice.

Answer 1

Unfortunately, no. The full documentation for what’s allowed using Key-Value Coding is here. There are not, to my knowledge, any operators that allow you to grab a particular array or set object.