I was going through the release notes for Xcode 4.4 and noticed this: LLVM 4.0 Compiler Xcode now includes the Apple LLVM Compiler version 4.0, including the following newObjective-C language features: [...] - Objective-C literals: create literals for NSArray, NSDictionary, and NSNumber, just the same as the literals for NSString I'm intrigued about this feature. It's not entirely clear to me just