I wish NSDictionary (NSMutableDictionary actually) could handle arbitrary mappings of one type of object to another, without copying the keys. A string makes a good key most of the time but what about the case where you want to do the reverse mapping, to find the string which you have associated with a particular object? I'm accustomed to things like Qt and Java where hashtables can contain anything for both key and value. Is there an alternative which does work that way? I didn't try CFDictionary yet; is that appropriate for an iPhone app? _______________________________________________
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