trying to get last object of all arrays in an array

If I have:

NSArray *arr = @[
@[@"lol", @"omg"],
@[@"rofl", @"copter"],
...
];

I want to be able to do:

[arr valueForKey:@"lastObject"]

and get back:

@[@"omg", @"copter"]

However, when I try this, I keep getting bad access saying that the
object doesnt respond to lastObject... ?

What am I doing wrong?

Patrick J. Collins
http://collinatorstudios.com

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Objc-language mailing list (Objc-language@lists.apple.com)
Help/Unsubscribe/Update your Subscription:
https://lists.apple.com/mailman/options/objc-language/anirudha.k.cpp1%40blogger.com

This email sent to anirudha.k.cpp1@blogger.com