Debugging Exceptions in Xcode

Natasha Murashev:

Just typepo $arg1 into the debug area to get the human-readable version of the error (in this case, the nib is invalid) […] Finally, you can add thepo $arg1 command to your Exception Breakpoint so it’s just automatic.

Whereas, otherwise Swift will crash with no useful information when there’s an uncaught exception.

DebuggingiOSMacProgrammingSwift Programming LanguageXcode

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