관리-도구

편집 파일: placeholders.hpp

// // placeholders.hpp // ~~~~~~~~~~~~~~~~ // // Copyright (c) 2003-2024 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) // #ifndef BOOST_ASIO_PLACEHOLDERS_HPP #define BOOST_ASIO_PLACEHOLDERS_HPP #if defined(_MSC_VER) && (_MSC_VER >= 1200) # pragma once #endif // defined(_MSC_VER) && (_MSC_VER >= 1200) #include <boost/asio/detail/config.hpp> #include <boost/asio/detail/functional.hpp> #include <boost/asio/detail/push_options.hpp> namespace boost { namespace asio { namespace placeholders { #if defined(GENERATING_DOCUMENTATION) /// An argument placeholder, for use with std::bind() or boost::bind(), that /// corresponds to the error argument of a handler for any of the asynchronous /// functions. unspecified error; /// An argument placeholder, for use with std::bind() or boost::bind(), that /// corresponds to the bytes_transferred argument of a handler for asynchronous /// functions such as boost::asio::basic_stream_socket::async_write_some or /// boost::asio::async_write. unspecified bytes_transferred; /// An argument placeholder, for use with std::bind() or boost::bind(), that /// corresponds to the iterator argument of a handler for asynchronous functions /// such as boost::asio::async_connect. unspecified iterator; /// An argument placeholder, for use with std::bind() or boost::bind(), that /// corresponds to the results argument of a handler for asynchronous functions /// such as boost::asio::basic_resolver::async_resolve. unspecified results; /// An argument placeholder, for use with std::bind() or boost::bind(), that /// corresponds to the results argument of a handler for asynchronous functions /// such as boost::asio::async_connect. unspecified endpoint; /// An argument placeholder, for use with std::bind() or boost::bind(), that /// corresponds to the signal_number argument of a handler for asynchronous /// functions such as boost::asio::signal_set::async_wait. unspecified signal_number; #else static constexpr auto& error = std::placeholders::_1; static constexpr auto& bytes_transferred = std::placeholders::_2; static constexpr auto& iterator = std::placeholders::_2; static constexpr auto& results = std::placeholders::_2; static constexpr auto& endpoint = std::placeholders::_2; static constexpr auto& signal_number = std::placeholders::_2; #endif } // namespace placeholders } // namespace asio } // namespace boost #include <boost/asio/detail/pop_options.hpp> #endif // BOOST_ASIO_PLACEHOLDERS_HPP