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Finding next / previous characters in an alphabet?

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Finding next / previous characters in an alphabet?

Subject: Finding next / previous characters in an alphabet?
From: Jonathan del Strother <email@hidden>
Date: Sat, 20 Aug 2005 23:54:02 +0100

I have a unicode character in an NSString. I need to find the next character in the alphabet - eg if I have 'd', I want 'e'. I'd also like it to work with (for example) japanese characters.

There's clearly some character-ordering somewhere in Cocoa, since it must use that for the compare: methods, but I can't figure out how to get to it. Any suggestions?

Jon
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