I'm not entirely sure how I feel about this but I think I like it. It creates a new local scope for variables and is easier than the struct dance that we need to do to assign to things like frame and bounds properties. Interesting little technique.
It's easy to forget about the open source Omni Frameworks but there are some really useful bits of code in there. In this post, Amy Worrall looks into implementing their document picker which mirrors the style of the Apple document pickers in iWork for iOS.
If there were a layer you were not allowed to create directly but you could steal from an instance of a UIKit class, would that code be App Store legal? From the look of the code I would say yes so this is an intriguing hack from César Pinto Castillo.
This isn't directly related to iOS development but I couldn't resist linking to it as it is a fantastic piece of work. Get structured data out of PSD files as well as being able to read and write them. It would be wonderful if this was ported to Objective-C.