# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2013-01-01 08:47:00 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/286030753467342848) RT @aditya_herlamba: Seven Deadly Sins of Modern Objective-C http://t.co/2T1cdbD2