...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Defined in header <boost/beast/http/fields.hpp>
template< class Alloc> friend void swap( basic_fields< Alloc >& lhs, basic_fields< Alloc >& rhs);
Convenience header <boost/beast/http.hpp>