...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::value
// In header: <boost/xpressive/regex_actions.hpp> template<typename T> struct value : public proto::extends< proto::terminal< T >::type, value< T > > { // types typedef proto::extends< typename proto::terminal< T >::type, value< T > > base_type; // construct/copy/destruct value(); explicit value(T const &); // public member functions T & get(); T const & get() const; };