Efficient Debugging: Printing Method Names and Line Numbers in Xcode

Efficient Debugging: Printing Method Names and Line Numbers in Xcode

28 February 2025 Stephan Petzl Leave a comment Xcode

Debugging in Xcode can be a challenging task, especially when you want to track down specific method calls or line numbers in your code. This guide will provide you with techniques to enhance your debugging process by printing out method names and line numbers, as well as conditionally disabling logs when compiling for release.

Printing Method Names and Line Numbers

To print the current method’s name and the line number in your logs, you can use macros. The following macro can be a great addition to your debugging toolkit:

#ifdef DEBUG
#   define DLog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)
#else
#   define DLog(...)
#endif

#define ALog(fmt, ...) NSLog((@"%s [Line %d] " fmt), __PRETTY_FUNCTION__, __LINE__, ##__VA_ARGS__)

The DLog macro will output logs only when the DEBUG variable is set, which is ideal for development environments. In contrast, the ALog macro will always display logs, regardless of the DEBUG setting, making it useful for critical alerts.

Disabling Logs in Release Builds

To ensure that your production builds are not cluttered with debug logs, you can conditionally disable them using the macros mentioned above. By wrapping your logging statements with these macros, you can control the visibility of logs based on the build configuration.

Advanced Logging Techniques

For those who need more advanced logging features, consider implementing a custom logging class. This allows you to add priority flags for different log levels, send logs to a file or database, and customize the log format to suit your needs.

Enhancing Your Testing with Repeato

While efficient logging is crucial for debugging, automated testing is equally important for ensuring code quality. Repeato, a no-code test automation tool, can streamline your testing process. With Repeato, you can create, run, and maintain automated tests for iOS, Android, and web apps using a test recorder. Its computer vision and AI capabilities make it particularly fast and efficient.

For developers looking to integrate test automation into their workflow, Repeato offers features like data-driven and keyword-driven testing, and supports command line scripts or JavaScript code for complex tasks. All tests and workspace data are saved in text and JSON format, making version control straightforward.

To learn more about how Repeato can enhance your development and testing processes, visit our Getting Started Guide.

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