BOOST_LOG_EXPLICIT_OPERATOR_BOOL — The macro defines an explicit operator of conversion to bool.
bool
// In header: <boost/log/utility/explicit_operator_bool.hpp> BOOST_LOG_EXPLICIT_OPERATOR_BOOL()
The macro should be used inside the definition of a class that has to support the conversion. The class should also implement operator!, in terms of which the conversion operator will be implemented.
operator!
