template<class MutableBufferSequence, class ConstBufferSequence>
size_t buffer_copy(const MutableBufferSequence& dest,
const ConstBufferSequence& source) noexcept;
template<class MutableBufferSequence, class ConstBufferSequence>
size_t buffer_copy(const MutableBufferSequence& dest,
const ConstBufferSequence& source,
size_t max_size) noexcept;
Effects: Copies bytes from the buffer sequence source to the buffer sequence dest, as if by calls to memcpy.
The mutable buffer sequence dest specifies memory where the data should be placed. The operation always fills a buffer in the sequence completely before proceeding to the next.
The constant buffer sequence source specifies memory where the data to be written is located. The operation always copies a buffer in the sequence completely before proceeding to the next.
Returns: The number of bytes copied from source to dest.