On Mar 16, 2009, at 7:37 AM, Michael Ash wrote:
On Mon, Mar 16, 2009 at 10:26 AM, Adam R. Maxwell <amaxw...@mac.com> wrote:On Mar 16, 2009, at 7:02 AM, Roland King wrote:Any good ideas for doing a key-case-insensitive NSDictionary of NSString to NSString? I have some HTTP headers I want to stick in a dictionary andlook up later. HTTP headers have case-insensitive keys.Use a CFDictionary with custom key callbacks that have a case- insensitive hash and equality function. You can then cast it to an NSDictionary foreasier access.Alas, toll-free bridging doesn't work properly when custom callbacks are in effect. It *might* work for something as simple as this, but you may have to use only the CF functions on it.
In the case of strings (or when pointer equality isn't used), toll- free bridging does work. Your custom callbacks will be invoked, and - [NSMutableDictionary setObject:forKey:] key-copying doesn't hurt anything.
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