Character class

[Michael Thaler-2]

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Hello,

I am trying to write a scientific calculator for GNUstep. The calculator should use a parser to parse formulars. For the parser I need a character class that has methods like IsDigit, IsLetter, IsWhitespace. I briefly looked at the gnustep-base documentation and couldn't find any. Is there a character class or do I have to write it myself?

Thanks for tips,

Michael

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[David Ayers-2]

Am Samstag, den 16.08.2008, 09:26 +0200 schrieb Michael Thaler:
> I am trying to write a scientific calculator for GNUstep. The
> calculator should use a parser to parse formulars. For the parser I
> need a character class that has methods like IsDigit, IsLetter,
> IsWhitespace. I briefly looked at the gnustep-base documentation and
> couldn't find any. Is there a character class or do I have to write it
> myself?

There is no class for single characters.  There is a unichar type and I
believe what you are looking for is:

http://www.gnustep.org/resources/documentation/Developer/Base/Reference/index.html
[http://tinyurl.com/5wm8kv]

http://developer.apple.com/documentation/Cocoa/Reference/Foundation/Classes/NSCharacterSet_Class/Reference/Reference.html
[http://tinyurl.com/6754gg]

which provide -characterIsMember: for special character sets.

Cheers,
David




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