Boost your skills with a raywenderlich.com Beginner subscription. With over 60+ video courses and our core foundational programming books bundled in one subscription, it’s simply the best investment you can make in your development career.
Already a subscriber?
This video was last updated on Sep 26 2017
Learn how to unwrap optionals, force unwrap optionals, use optional binding, and use the guard statement.
A raywenderlich.com subscription is the best way to learn and master mobile development — plans start at just $19.99/month!
Learn iOS, Swift, Android, Kotlin, Flutter and Dart development and unlock our massive catalog of 50+ books and 4,000+ videos.