46 lines
2.4 KiB
C++
46 lines
2.4 KiB
C++
// Copyright Louis Dionne 2013-2022
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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#include <boost/hana/detail/any_of.hpp>
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#include <boost/hana/detail/wrong.hpp>
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#include <boost/hana/integral_constant.hpp>
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namespace hana = boost::hana;
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template <typename I>
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struct is_even {
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static constexpr bool value = I::value % 2 == 0;
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};
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static_assert(!hana::detail::any_of<is_even>::value, "");
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static_assert(!hana::detail::any_of<is_even, hana::int_<1>>::value, "");
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static_assert(!hana::detail::any_of<is_even, hana::int_<1>, hana::int_<3>>::value, "");
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static_assert(!hana::detail::any_of<is_even, hana::int_<1>, hana::int_<3>, hana::int_<5>>::value, "");
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static_assert(!hana::detail::any_of<is_even, hana::int_<1>, hana::int_<3>, hana::int_<5>, hana::int_<7>>::value, "");
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static_assert(hana::detail::any_of<is_even, hana::int_<0>>::value, "");
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static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<2>>::value, "");
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static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<2>, hana::int_<4>>::value, "");
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static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<2>, hana::int_<4>, hana::int_<6>>::value, "");
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static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<1>>::value, "");
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static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<1>, hana::int_<2>>::value, "");
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static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<1>, hana::int_<2>, hana::int_<3>>::value, "");
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static_assert(hana::detail::any_of<is_even, hana::int_<0>, hana::int_<1>, hana::int_<2>, hana::int_<3>, hana::int_<4>>::value, "");
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static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<3>, hana::int_<5>, hana::int_<8>>::value, "");
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static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<8>, hana::int_<5>, hana::int_<7>>::value, "");
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// Make sure we short-circuit properly
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template <typename ...Dummy>
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struct fail {
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static_assert(hana::detail::wrong<Dummy...>::value,
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"this must never be instantiated");
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};
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static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<2>, fail<>>::value, "");
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static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<2>, fail<>, hana::int_<3>>::value, "");
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static_assert(hana::detail::any_of<is_even, hana::int_<1>, hana::int_<2>, fail<>, hana::int_<4>>::value, "");
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int main() { }
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