On Sat, 26 Mar 2011 02:23:42 +0100, Peter Lübke said:

>To be more detailed: my custom class and its subclasses are wrapper
>classes containing file informations. They are based on FSRef rather
>than using paths - I do a lot of lengthy iterations so paths are much
>too fragile. I also heavily use NSSet to store instances, and I
>wanted -isEqual: to be as fast as possible. So I thought I could just
>return a unique hash value for each custom class and return
>(FSCompareFSRefs (&ownRef, &otherRef) == noErr) for -isEqual:, thus
>avoiding the need to *first* compare the objects' classes.

Are you aware that starting in 10.6, the OS provides 'file reference
URLs' which are much like FSRefs.  See:

<http://developer.apple.com/library/mac/#releasenotes/Cocoa/Foundation.html>

--
____________________________________________________________
Sean McBride, B. Eng                 s...@rogue-research.com
Rogue Research                        www.rogue-research.com
Mac Software Developer              Montréal, Québec, Canada


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