Re: [Boost-users] Interest in a Unicode library for Boost?

On 01.11.19 22:22, Zach Laine via Boost-users wrote:

Moreover, I don't know of a great use case for a boost::text::is_alpha(). Specifically, it seams that if you are looking for alphabetical characters, you are usually doing something like word-breaking, for which there is already an algorithm, doing a regex match, for which is_alpha() is insufficient, etc. I'm open to hearing about such use cases, of course.

Filtering text input. Parsing programming languages or data description languages. Gathering statistics on a piece of text. My own codebase has has four instances of #include <cctype> and three instances of #include , but that's an artificially low number because character classification is trivial to do by hand for ASCII and because cctype doesn't support Unicode. Exactly zero of these instances can be replaced by any algorithm provided by the proposed library. All of them could technically be replaced by regular expressions, but only in the sense that it is possible to (inefficiently) implement the cctype interface in terms of regular expressions. -- Rainer Deyke (rainerd@eldwood.com)