UIDebuggingInformationOverlay
Update, December 9, 2017: This overlay still exists, but this post’s instructions don’t work on iOS 11 and later. In an update to his excellent book, Advance...
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My first LLDB command - Using Python to customize your debugging experience
If you've ever used Xcode's console to debug, then you're probably familiar with at least a few LLDB commands. You can do things like print objects (using po...