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#ifndef BOOST_HASH_IS_TUPLE_LIKE_HPP_INCLUDED #define BOOST_HASH_IS_TUPLE_LIKE_HPP_INCLUDED // Copyright 2017, 2022 Peter Dimov. // Distributed under the Boost Software License, Version 1.0. // https://www.boost.org/LICENSE_1_0.txt #include <type_traits> #include <utility> namespace boost { namespace hash_detail { template<class T, class E = std::true_type> struct is_tuple_like_: std::false_type { }; template<class T> struct is_tuple_like_<T, std::integral_constant<bool, std::tuple_size<T>::value == std::tuple_size<T>::value> >: std::true_type { }; } // namespace hash_detail namespace container_hash { template<class T> struct is_tuple_like: hash_detail::is_tuple_like_< typename std::remove_cv<T>::type > { }; } // namespace container_hash } // namespace boost #endif // #ifndef BOOST_HASH_IS_TUPLE_LIKE_HPP_INCLUDED