Printing Errors to a File in Cocoa/ Objective-C

Question

Hello Fellow Computer People!

Anyone willing to help will have my gratitude ;)

Just wondering what is the best approach to printing errors to a file i.e. so that if my executable crashes I can have a record of what happened.

This would be in Cocoa, Objective-C or C.

Thanks,

Eric

PS. I hope my question is not too general or vague. Please let me know if you need clarification.

Answer 1

If your app crashes, it'll automatically write a crash log to ~/Library/Logs/CrashReporter. The crash log will include a lot of useful information, including a stack trace and the registry state. You don't need to do anything to enable this functionality.

For other error messages that don't cause crashes, you can use NSLog to write information to the application's log file, which is stored at ~/Library/Logs. The log messages will be prepended with a timestamp. By default NSLog writes to the global console log, but that behavior can be modified by setting STDERR_FILENO.