# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2015-06-06 12:59:31 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/607169949887565825) RT @Dev_4iOS: Swift tutorial: control your code with value types http://t.co/orthqp3T9B (via @soffes) #programming