People shipped with Swift 2. There were lots of source changes in 3. XCode converted many. 4 will have few changes but it should be an easy conversion. Personal

People shipped with Swift 2. There were lots of source changes in 3. XCode converted many. 4 will have few changes but it should be an easy conversion. Personally, I love Swift. Creating my own Swift Cookbook to help myself and others find solutions quickly. http://www.h4labs.com/dev/ios/swift_cookbook.html http://www.h4labs.com/dev/ios/swift_cookbook.html