WWDC After Party 2017 @Ebisu - connpass
https://pre-wwdc.connpass.com/event/56731/
での発表資料です。
# 参考資料
What's New in Foundation - WWDC 2017 - Videos - Apple Developer
https://developer.apple.com/videos/play/wwdc2017/212/
Search · Codable repo:apple/swift path:stdlib
https://github.com/search?l=Swift&q=Codable+repo%3Aapple%2Fswift+path%3Astdlib&ref=advsearch&type=Code&utf8=%E2%9C%93