Boost
C++ Libraries
...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
This is an older version of Boost and was released in 2018. The current version is 1.89.0.
Defined in header <boost/beast/core/flat_buffer.hpp>
template< class Alloc> friend void swap( basic_flat_buffer< Alloc >& lhs, basic_flat_buffer< Alloc >& rhs);
Convenience header <boost/beast/core.hpp>