84 lines
2.7 KiB
C++
84 lines
2.7 KiB
C++
//
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// placeholders.hpp
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// ~~~~~~~~~~~~~~~~
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//
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// Copyright (c) 2003-2024 Christopher M. Kohlhoff (chris at kohlhoff dot com)
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//
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// Distributed under the Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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#ifndef BOOST_ASIO_PLACEHOLDERS_HPP
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#define BOOST_ASIO_PLACEHOLDERS_HPP
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#if defined(_MSC_VER) && (_MSC_VER >= 1200)
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# pragma once
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#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
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#include <boost/asio/detail/config.hpp>
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#include <boost/asio/detail/functional.hpp>
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#include <boost/asio/detail/push_options.hpp>
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namespace boost {
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namespace asio {
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namespace placeholders {
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#if defined(GENERATING_DOCUMENTATION)
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/// An argument placeholder, for use with std::bind() or boost::bind(), that
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/// corresponds to the error argument of a handler for any of the asynchronous
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/// functions.
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unspecified error;
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/// An argument placeholder, for use with std::bind() or boost::bind(), that
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/// corresponds to the bytes_transferred argument of a handler for asynchronous
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/// functions such as boost::asio::basic_stream_socket::async_write_some or
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/// boost::asio::async_write.
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unspecified bytes_transferred;
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/// An argument placeholder, for use with std::bind() or boost::bind(), that
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/// corresponds to the iterator argument of a handler for asynchronous functions
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/// such as boost::asio::async_connect.
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unspecified iterator;
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/// An argument placeholder, for use with std::bind() or boost::bind(), that
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/// corresponds to the results argument of a handler for asynchronous functions
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/// such as boost::asio::basic_resolver::async_resolve.
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unspecified results;
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/// An argument placeholder, for use with std::bind() or boost::bind(), that
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/// corresponds to the results argument of a handler for asynchronous functions
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/// such as boost::asio::async_connect.
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unspecified endpoint;
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/// An argument placeholder, for use with std::bind() or boost::bind(), that
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/// corresponds to the signal_number argument of a handler for asynchronous
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/// functions such as boost::asio::signal_set::async_wait.
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unspecified signal_number;
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#else
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static BOOST_ASIO_INLINE_VARIABLE constexpr auto& error
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= std::placeholders::_1;
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static BOOST_ASIO_INLINE_VARIABLE constexpr auto& bytes_transferred
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= std::placeholders::_2;
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static BOOST_ASIO_INLINE_VARIABLE constexpr auto& iterator
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= std::placeholders::_2;
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static BOOST_ASIO_INLINE_VARIABLE constexpr auto& results
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= std::placeholders::_2;
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static BOOST_ASIO_INLINE_VARIABLE constexpr auto& endpoint
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= std::placeholders::_2;
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static BOOST_ASIO_INLINE_VARIABLE constexpr auto& signal_number
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= std::placeholders::_2;
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#endif
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} // namespace placeholders
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} // namespace asio
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} // namespace boost
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#include <boost/asio/detail/pop_options.hpp>
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#endif // BOOST_ASIO_PLACEHOLDERS_HPP
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