Xcode のやつは "Swift" という言葉は含まないと思います。 https://help.apple.com/xcode/mac/current/#/dev188e45167 https://developer.apple.com/videos/play/wwdc2018/402/

Getting the Most out of Playgrounds in Xcode - WWDC 2018 - Videos -...

Discover major advancements in Xcode playgrounds. Learn advanced tips and techniques, hear about new and often overlooked workflows, and...