The iPad Playgrounds uses a new bundle format called .playgroundbook I have been exploring it in the past week and am very impressed. https://mobile.twitter.c

The iPad Playgrounds uses a new bundle format called .playgroundbook I have been exploring it in the past week and am very impressed. https://mobile.twitter.com/ontouchstart/status/758432030036205569 https://mobile.twitter.com/ontouchstart/status/7584320300362... Since Swift3 feature list is now finalized (https://apple.github.io/swift-evolution/ https://apple.github.io/swift-evolution/), many of them will go into iPad playgrounds soon. I am sure it will become great tool to learn Swift language as well as UIKit at many different levels.