...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::swap
// In header: <boost/log/utility/setup/settings.hpp> template<typename CharT> void swap(basic_settings_section< CharT > & left, basic_settings_section< CharT > & right);