| [/ |
| / Copyright (c) 2003-2021 Christopher M. Kohlhoff (chris at kohlhoff dot com) |
| / |
| / Distributed under the Boost Software License, Version 1.0. (See accompanying |
| / file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
| /] |
| |
| [section:ConstBufferSequence Constant buffer sequence requirements] |
| |
| A ['constant buffer sequence] represents a set of memory regions that may be |
| used as input to an operation, such as the `send` operation of a socket. |
| |
| A type `X` meets the `ConstBufferSequence` requirements if it satisfies the |
| requirements of `Destructible` (C++Std [destructible]) and |
| `CopyConstructible` (C++Std [copyconstructible]), as well as the additional |
| requirements listed below. |
| |
| In the table below, `x` denotes a (possibly const) value of type `X`, and `u` |
| denotes an identifier. |
| |
| [table ConstBufferSequence requirements |
| [[expression] [return type] [assertion/note[br]pre/post-condition]] |
| [ |
| [`asio::buffer_sequence_begin(x)`[br] |
| `asio::buffer_sequence_end(x)`] |
| [An iterator type meeting the requirements for bidirectional iterators |
| (C++Std \[bidirectional.iterators\]) whose value type is convertible to |
| `const_buffer`.] |
| [] |
| ] |
| [ |
| [`` |
| X u(x); |
| ``] |
| [] |
| [post:[br] |
| `` |
| equal( |
| asio::buffer_sequence_begin(x), |
| asio::buffer_sequence_end(x), |
| asio::buffer_sequence_begin(u), |
| asio::buffer_sequence_end(u), |
| [](const const_buffer& b1, |
| const const_buffer& b2) |
| { |
| return b1.data() == b2.data() |
| && b1.size() == b2.size(); |
| }) |
| ``] |
| ] |
| ] |
| |
| [endsect] |