# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2012-03-25 12:28:24 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/183893090954772480) “@joseph_carney: Handy Cheat Sheet For Using Objective-C Blocks (Closures) http://t.co/E180GhEx via @maniacdev” I really needed this!