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NSNumberFormatter 10.0+ vs. 10.4+

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NSNumberFormatter 10.0+ vs. 10.4+

Subject: NSNumberFormatter 10.0+ vs. 10.4+
From: Jamie Phelps <email@hidden>
Date: Sat, 26 Jan 2008 16:14:48 -0600

I'm working through Hillegass's Cocoa Programming for Mac OS X and ran into a problem with NSNumberFormatter that clearly can't be covered in the text and I haven't been able to find any helpful information from Google.

There is an NSTableView object in MyDocument.nib, and one column has an NSNumberFormatter applied set to display percentages. If I set the version to 10.0+ and enter a value without % into the cell, the app happily adds a % to make the entered value conform to the expected format. If I change the version to 10.4+ and enter a value without %, I get a sheet that says the value does not conform to the expected format.

So, I have two questions:

1) What is the difference between 10.0+ and 10.4+? Since I'm just starting out, I don't intend to support anything earlier than Leopard.

2) Is there a graceful way to handle these errors?

Thanks,
Jamie
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