On 29/05/2011, at 17:04, julius wrote:
> …
> The reason is that [zAry count] returns a result of type NSUInteger!!!!

Exactly.

> …
> Why might the Cocoa developers have chosen to do this?
> …

Not exactly Cocoa developers. In C, considering "uint" an unsigned int variable 
set to -1, a statement like "uint > 0" returns true.

When one of the literals is unsigned, the other is implicitly converted, and -1 
is the highest int possible.



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