diff options
Diffstat (limited to 'boost/asio/detail/type_traits.hpp')
| -rw-r--r-- | boost/asio/detail/type_traits.hpp | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/boost/asio/detail/type_traits.hpp b/boost/asio/detail/type_traits.hpp index 1556e597e0..a0d4cb4902 100644 --- a/boost/asio/detail/type_traits.hpp +++ b/boost/asio/detail/type_traits.hpp @@ -2,7 +2,7 @@ // detail/type_traits.hpp // ~~~~~~~~~~~~~~~~~~~~~~ // -// Copyright (c) 2003-2017 Christopher M. Kohlhoff (chris at kohlhoff dot com) +// Copyright (c) 2003-2018 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) @@ -54,7 +54,13 @@ using std::is_function; using std::is_same; using std::remove_pointer; using std::remove_reference; +#if defined(BOOST_ASIO_HAS_STD_INVOKE_RESULT) +template <typename> struct result_of; +template <typename F, typename... Args> +struct result_of<F(Args...)> : std::invoke_result<F, Args...> {}; +#else // defined(BOOST_ASIO_HAS_STD_INVOKE_RESULT) using std::result_of; +#endif // defined(BOOST_ASIO_HAS_STD_INVOKE_RESULT) using std::true_type; #else // defined(BOOST_ASIO_HAS_STD_TYPE_TRAITS) using boost::add_const; |