swift debuging

To effectively debug Swift code, Apple introduced several new features and techniques at WWDC 2024. Here are some highlights from the sessions:

1. Xcode 16 Enhancements:

   • In Xcode 16, you can view full backtraces in the editor, which helps in understanding how you reached a particular point in your code. This feature is accessible in the debug bar next to the memory and view debugger controls. Instead of using print statements, consider using os_log for more structured logging. Xcode essentials (21:17)

2. LLDB Debugging Techniques:

   • The session "Run, Break, Inspect: Explore effective debugging in LLDB" covers various debugging techniques using LLDB, the underlying debugger in Xcode. It introduces the @DebugDescription macro, which allows you to customize how data types appear in the debugger. This session also discusses the use of the p command, which has been reworked to save time by combining multiple tools under a single command. Run, Break, Inspect: Explore effective debugging in LLDB (01:02)

3. Swift Error Breakpoints:

   • Swift error breakpoints are a new feature that stops the application as soon as a Swift error is thrown, allowing you to quickly identify and fix issues. This can be particularly useful when dealing with high-firing breakpoints or when you need to focus on specific error conditions. Run, Break, Inspect: Explore effective debugging in LLDB (23:18)

These sessions provide a comprehensive overview of the new debugging tools and techniques available in Xcode 16 and LLDB, making it easier to debug Swift applications effectively.