...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_FORWARD_LOGGER_CONSTRUCTORS_TEMPLATE
// In header: <boost/log/sources/basic_logger.hpp>
BOOST_LOG_FORWARD_LOGGER_CONSTRUCTORS_TEMPLATE(class_type)