On Tue, Jul 20, 2010 at 11:04 AM, Charlie Dickman <3tothe...@comcast.net> wrote: > You should be able to accomplish what you want using NSPredicate.
NSPredicate will just wind up falling through to the same sorting methods Roland can call directly. > You can also use the C functions topper and tolower to detect and distinguish > case differences. Don't do this. 1. These functions are ASCII only. (Although the man page mentions they extend the standard and support multibyte characters, but that support could go away.) 2. C wide-character support is not as correct as CFString's. Since you already have an NSString, it's trivial to use the CFStringUppercase/CFStringLowercase/CFStringCapitalize API to correctly change case depending on language: http://lists.apple.com/archives/cocoa-dev/2009/May/msg00234.html 3. Why convert case when you can compare case- (and diacritic-)insensitive directly using the CFStringCompareWithOptions API? In short, Core Foundation is more correct than your code, unless you are or plan on hiring a linguistic scholar. --Kyle Sluder _______________________________________________ Cocoa-dev mailing list (Cocoa-dev@lists.apple.com) Please do not post admin requests or moderator comments to the list. Contact the moderators at cocoa-dev-admins(at)lists.apple.com Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com This email sent to arch...@mail-archive.com
