Thanks, but I was just looking for a better way to convert a string to upper case, not an arbitrary collection of chars. I've never yet needed to upper-case anything other than a string and unless I get the urge to write a text editor (unlikely!) I doubt I ever will.
And yes it's trivial to wrap this in a function, but in my opinion it really shouldn't be necessary. It's such a simple and common-place operation, why isn't it in the standard library?