Count of chars in NSString or NSMutableString?

Question

I've tried this

NSCharacterSet *myCharSet = [NSCharacterSet characterSetWithCharactersInString: myString];
[myCharSet count];

But get a warning that NSCharacterSet may not respond to count. This is for desktop apps and not iPhone, which I think the above code works with.

Answer 1

That should not work on the iPhone either, as NSCharacterSet is not a subclass of NSSet on either platform.

If you really need to get a count why not subclass NSSet, add the value, then have a method that returns that as an NSCharacterSet on demand for use in anything that needs a character set?

Answer 2

I might be missing something here, but what's wrong with simply doing:

NSUInteger characterCount = [myString length];

To just get the number of characters in a string, I don't see any reason to mess around with NSCharacterSet.