# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2019-10-12 13:50:49 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/1183017177445818368) RT @cocoaphony: Interview questions I’ve asked many times: Tell me how you fixed a difficult bug. …how you improved performance. They’re g…