usesuper::{helpers::filter,textuals::Filter};/// Match any character
pubconstfnany_char()-> Filter{filter(|_|true)}/// Match any alphabetic character
pubconstfnalphabetic()-> Filter{filter(|c|c.is_alphabetic())}/// Match any alphabetic or digit character
pubconstfnalphanumeric()-> Filter{filter(|c|c.is_alphanumeric())}