...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_EXPLICIT_OPERATOR_BOOL — The macro defines an explicit operator of conversion to bool
.
// In header: <boost/log/utility/explicit_operator_bool.hpp>
BOOST_LOG_EXPLICIT_OPERATOR_BOOL()