...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::xpressive::null_regex_traits — stub regex_traits for non-char data
// In header: <boost/xpressive/xpressive_fwd.hpp> template<typename Elem> struct null_regex_traits { };