...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::proto::value — Return the value stored within the specified Proto terminal expression.
// In header: <boost/proto/traits.hpp> template<typename Expr> typename proto::result_of::value< Expr & >::type value(Expr & expr); template<typename Expr> typename proto::result_of::value< Expr const & >::type value(Expr const & expr);