Measure twice, refactor once
Just a quick year end post for my loyal readers…
When you are looking to make performance improvements on your iOS app, no matter how well you think you know the code, fire up Instruments and run your code on a real device. Before the holiday break, I was not going to do this because I was certain where the code was slowing down, but on a lark I decided to profile it and needless to say it was a real eye opener. I saved myself a bundle of time by not chasing down phantom slow downs, made the code run super super fast, and got the girl in the end. (OK, maybe not that last one.)
Happy and prosperous New Year to one and all.