...I am an expert on the muscle groups and gaining mass and losing fat. I have played tennis for seven years. I have competed in several tournaments. (read more)
...I have worked in and taught about Objective-C with AppKit, later Swift and UIKit and now SwiftUI for a span of decades. I've taught about the Swift programming language since it was introduced in 2014 at Apple's WWDC. My focus is on the Foundation and both UIKit and SwiftUI frameworks for building iOS applications. (read more)