# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2017-09-29 19:04:44 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/913841993263935488) It's been a long slog, but my book on Swift 4 has finally been published! Amazon: US https://t.co/0FeqfFz5zS UK https://t.co/epVIyTStJl