...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
boost::log::expressions::attribute_terminal::result<ThisT(ContextT)>
// In header: <boost/log/expressions/attr.hpp> template<typename ThisT, typename ContextT> struct result<ThisT(ContextT)> { // types typedef remove_cv< typename remove_reference< typename phoenix::result_of::env< ContextT >::type >::type >::type env_type; typedef env_type::args_type args_type; typedef unspecified cv_value_extractor_type; typedef boost::result_of< cv_value_extractor_type(attribute_name const &, typename fusion::result_of::at_c< args_type, 0 >::type) >::type type; };