iOS: Swift Swift (Swift is Confusing) First SWIFT Tutorial ever! (2 Part Series) Closures Swift Closures Quick Reference: Part 1 Swift Closures Quick Reference: Part 2 Swift Closures Quick Reference: Part 3 iOS : Swift : Blocks = Closures Saving HealthKit Data & Closures HealthKit for iOS8 – 7 Part Series Optionals Swift Optionals Quick Reference Why, oh Why, did Apple take away ARC just to give us Optionals!? Implicitly Unwrapped Optionals