Rethinking the problem of how to display row numbers in a view based 
NSTableView from a different perspective:

I could use bindings if I could manage to make my row entities know their index 
within the table view content array.

As a solution I could device a delegate for my entities and make the entity 
order the delegate to send a query to the array controller about its own index 
in arranged objects.

Does this seem like a sane approach?

Thanks,

Peter
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