[Biococoa-dev] finding characters in an NSString

[Koen van der Drift]

Hi,

Just spend over an hour trying to figure out how to determine if an 
NSString contains one or more characters from an NSCharacterSet. 
Aaaarrrggghhhh. There is no such thing in the Foundation Kit (at least, 
I couldn't find it).

How do I do this?

cheers,

- Koen.