Re: [boost] Interest in super string class?

Gennaro Prota wrote:

What I was hinting at is that not all languages have "uppercase" and/or "lowercase". And in those that have there's no guarantee of one-to-one mapping, so that to_lower or to_upper aren't in general invertible functions, or even left-invertible functions.

Or even possible functions: to_upper applied to the single German character ß ("sharp s") should yield "SS" ("SZ" a few decades ago) - an impossibility for the current interface. Sebastian Redl