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
The boost::asio::buffer_size function determines the total
number of bytes in a buffer or buffer sequence.
std::size_t buffer_size( const mutable_buffer & b); » more... std::size_t buffer_size( const mutable_buffers_1 & b); » more... std::size_t buffer_size( const const_buffer & b); » more... std::size_t buffer_size( const const_buffers_1 & b); » more... template< typename BufferSequence> std::size_t buffer_size( const BufferSequence & b); » more...
Header: boost/asio/buffer.hpp
Convenience header: boost/asio.hpp