Another Bug

By now you know that when I say something like “if all has gone well,” the app will crash. And so it has: The Debug navigator shows a trace back through an exception handler, and the console says

Click here to view code image

Terminating app due to uncaught exception 'NSInvalidArgumentException',    reason: '*** -[NSDictionary initWithObjects:forKeys:]:            count of objects (1) differs from count of keys (12)'

followed by a stack trace that last touched your code at -[SimpleCSVFile run:error:]. It would be nice to see what was going on in run:error:, but after the app ran through the exception handler, that information was lost. It would be nice if it weren’t.

Note

An exception is a signal by program code—your own or in the ...

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