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33 lines
890 B
C++
33 lines
890 B
C++
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#ifndef SPROUT_WEED_DETAIL_IS_ELEM_AND_TUPLE_HPP
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#define SPROUT_WEED_DETAIL_IS_ELEM_AND_TUPLE_HPP
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/weed/traits/type/is_tuple.hpp>
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#include <sprout/weed/traits/type/is_unused.hpp>
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namespace sprout {
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namespace weed {
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namespace detail {
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template<typename T, typename U, typename = void>
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struct is_elem_and_tuple
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: public std::false_type
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{};
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template<typename T, typename U>
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struct is_elem_and_tuple<
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T,
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U,
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typename std::enable_if<
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!sprout::weed::traits::is_tuple<T>::value
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&& !sprout::weed::traits::is_unused<T>::value
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&& sprout::weed::traits::is_tuple<U>::value
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>::type
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>
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: public std::true_type
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{};
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} // namespace detail
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} // namespace weed
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} // namespace sprout
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#endif // #ifndef SPROUT_WEED_DETAIL_IS_ELEM_AND_TUPLE_HPP
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