Place a unicode character in NS_ENUM

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When I try to place a unicode character in an NS_ENUM list I receive a warning:

NSLog(@"H\u2082O");

        typedef NS_ENUM(NSInteger, Gas) {
            Ar,
            CO,
            NO\u2082,
            H\u2082O
        };

Note that H\u2082O and NO\u2082 represent H2O and NO2 where 2 is a subscript. This works fine in an NSString but it doesn't work in an NS_ENUM.

Is it possible include a unicode character or are enums restricted to strings?

asked 40 secs ago

Gavin

962