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The boost::asio::buffer_copy
function is used to copy bytes from a source buffer (or buffer sequence)
to a target buffer (or buffer sequence).
Copies bytes from a source buffer sequence to a target buffer sequence.
template<
typename MutableBufferSequence,
typename ConstBufferSequence>
std::size_t buffer_copy(
const MutableBufferSequence & target,
const ConstBufferSequence & source);
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Copies a limited number of bytes from a source buffer sequence to a target buffer sequence.
template<
typename MutableBufferSequence,
typename ConstBufferSequence>
std::size_t buffer_copy(
const MutableBufferSequence & target,
const ConstBufferSequence & source,
std::size_t max_bytes_to_copy);
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The buffer_copy function is available in two forms:
buffer_copy(target, source)
buffer_copy(target, source, max_bytes_to_copy)
Both forms return the number of bytes actually copied. The number of bytes copied is the lesser of:
buffer_size(target)
buffer_size(source)
If specified, max_bytes_to_copy.
This prevents buffer overflow, regardless of the buffer sizes used in the copy operation.
Note that buffer_copy
is implemented in terms of memcpy, and consequently it cannot
be used to copy between overlapping memory regions.
Header: boost/asio/buffer.hpp
Convenience header: boost/asio.hpp