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31 lines
1.1 KiB
C++
31 lines
1.1 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2015 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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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 SPROUT_FUNCTIONAL_HASH_STD_UTILITY_HPP
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#define SPROUT_FUNCTIONAL_HASH_STD_UTILITY_HPP
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#include <utility>
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#include <sprout/config.hpp>
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#include <sprout/workaround/std/cstddef.hpp>
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#include <sprout/functional/hash/hash_value_traits.hpp>
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#include <sprout/functional/hash/hash_values.hpp>
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namespace sprout {
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//
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// hash_value_traits
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//
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template<typename T1, typename T2>
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struct hash_value_traits<std::pair<T1, T2> > {
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public:
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static SPROUT_CONSTEXPR std::size_t
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hash_value(std::pair<T1, T2> const& v) {
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return sprout::hash_values(v.first, v.second);
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}
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};
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} // namespace sprout
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#endif // #ifndef SPROUT_FUNCTIONAL_HASH_STD_UTILITY_HPP
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