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33 lines
900 B
C++
33 lines
900 B
C++
/*
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@copyright Louis Dionne 2014
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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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*/
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#include <boost/hana/set.hpp>
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#include <boost/hana/detail/constexpr.hpp>
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#include <boost/hana/detail/static_assert.hpp>
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#include <boost/hana/integral.hpp>
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#include <boost/hana/list/instance.hpp>
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using namespace boost::hana;
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template <int i>
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constexpr auto x = int_<i>;
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BOOST_HANA_CONSTEXPR_LAMBDA auto check = [](auto ...xs) {
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auto eq = [=](auto s) { return equal(to<Set>(s), set(xs...)); };
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return and_(
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all(eq, permutations(list(xs...))),
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not_(equal(set(xs...), set(xs..., x<999>)))
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);
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};
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int main() {
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BOOST_HANA_STATIC_ASSERT(check());
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BOOST_HANA_STATIC_ASSERT(check(x<0>));
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BOOST_HANA_STATIC_ASSERT(check(x<0>, x<1>));
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BOOST_HANA_STATIC_ASSERT(check(x<0>, x<1>, x<2>));
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}
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