Chapter 24
Twice As Nice
This is the final chapter, and the last topic I wanted to cover in this book. Your apps are pretty much done. Localization and performance optimizations are typically the last details you address. The next step is to upload them to the App Store (see the “Submitting Your App to the App Store” sidebar) and start dreaming about your next project.
But I can’t let you go just yet. There’s a bug in one of your apps, you still have some performance issues, and they’re all wrapped around the topic of concurrency. Concurrency is when two or more sequences of code (called threads) are executing at the same time. This allows your iOS device to, literally, do more than one thing at a time. It also severely complicates your ...
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