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boost::xpressive::regex_traits
// In header: <boost/xpressive/regex_traits.hpp> template<typename Char, typename Impl> struct regex_traits : public Impl { // types typedef Impl::locale_type locale_type; // public member functions regex_traits(); explicit regex_traits(locale_type const &); };
Thin wrapper around the default regex_traits implementation, either cpp_regex_traits or c_regex_traits