[Pythonmac-SIG] Getting None in KVC objectInKeyAtIndex_

[Johan Rydberg]

David Hain skrev:
> I'm trying to use bindings to hook up my model to an NSOutlineView, and 
> I'm attempting to use the countOf<Key>, objectIn<Key>AtIndex_ methods to 
> do the KVC half. The problem I'm running into is that I'm getting None 
> for the index argument, and I can't figure out what to do with that. The 
> reference materials[1] say that the method corresponds to the NSArray 
> objectAtIndex: method, which takes an NSUInteger, but doesn't mention 
> anything about null or nil or whatever it is in objc-land.

Maybe this will help you:

http://jimmatthews.wordpress.com/2007/07/12/objcselector-and-objcsignature/