Function buffer_sequence_begin

include/boost/asio/buffer.hpp:369–375

/// Get an iterator to the first element in a buffer sequence.
template <typename MutableBuffer>
inline const mutable_buffer* buffer_sequence_begin(const MutableBuffer& b,
    constraint_t<
      is_convertible<const MutableBuffer*, const mutable_buffer*>::value
    > = 0) noexcept
{
  return static_cast<const mutable_buffer*>(detail::addressof(b));
}

/// Get an iterator to the first element in a buffer sequence.
template <typename ConstBuffer>