This document discusses techniques for debugging iOS UIs without recompiling such as using breakpoints, the p command to print values, custom breakpoints, and LLDB commands like caflush, thread return, and wivar. It recommends the Chisel library and getting help within LLDB for additional debugging options.

1. iOS UI debugging
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2. NSLog + Recompile
• Objective-C books and classes cover NSLog
• Debugging requires lots of logging and
recompiling is slow

3. Print stuff w/o recompiling
• breakpoints pause execution and invoke the
debugger
• use the p command to print values

4. Custom breakpoints

5. LLDB without
breakpoints

6. • caflush - Flush the render server
• thread return - Return from the currently selected
frame with an optional return value
• wivar - Watch for changes to an instance
variable of an object

7. Recommended Reading
• github.com/facebook/chisel
• (lldb) help

8. iOS UI debugging
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