...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
default_attribute_types
// In header: <boost/log/utility/type_dispatch/standard_types.hpp> typedef mpl::copy< string_types, mpl::back_inserter< numeric_types >>::type default_attribute_types;