Lab Coats and Toy Problems

Someone clever once said that modern analytical philosophers would wear lab coats to work if they thought they could get away with it. I think something similar could be said about software engineers.

Drawing on Top of Subviews

How do you implement a custom UIView class that needs to draw over its contents? A quick tutorial that uses custom CoreGraphics, a customizable content view, and a neat trick to preserve the drawing hierarchy and your sanity.