On Mar 26, 2014, at 1:14 PM, Torsten Curdt <tcu...@vafer.org> wrote:

> There is really no other way?

Yes, if you’ve got a custom data model, then you’ll need to write custom code 
to navigate it with an index-path.
NSArrays-of-NSArrays aren’t really in common use in Cocoa, so they count as a 
custom data model IMHO.

—Jens
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