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41 lines
1.4 KiB
C++
41 lines
1.4 KiB
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/functional.hpp>
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#include <boost/hana/detail/static_assert.hpp>
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using namespace boost::hana;
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struct nonpod { virtual ~nonpod() { } };
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int main() {
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BOOST_HANA_STATIC_ASSERT(arg<1>(1) == 1);
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BOOST_HANA_STATIC_ASSERT(arg<1>(1, '2') == 1);
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BOOST_HANA_STATIC_ASSERT(arg<1>(1, '2', 3.3) == 1);
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BOOST_HANA_STATIC_ASSERT(arg<1>(1, '2', 3.3, nonpod{}) == 1);
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BOOST_HANA_STATIC_ASSERT(arg<2>(1, '2') == '2');
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BOOST_HANA_STATIC_ASSERT(arg<2>(1, '2', 3.3) == '2');
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BOOST_HANA_STATIC_ASSERT(arg<2>(1, '2', 3.3, 4.4f) == '2');
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BOOST_HANA_STATIC_ASSERT(arg<2>(1, '2', 3.3, 4.4f, nonpod{}) == '2');
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BOOST_HANA_STATIC_ASSERT(arg<3>(1, '2', 3.3) == 3.3);
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BOOST_HANA_STATIC_ASSERT(arg<3>(1, '2', 3.3, 4.4f) == 3.3);
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BOOST_HANA_STATIC_ASSERT(arg<3>(1, '2', 3.3, 4.4f, nonpod{}) == 3.3);
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BOOST_HANA_STATIC_ASSERT(arg<4>(1, '2', 3.3, 4.4f) == 4.4f);
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BOOST_HANA_STATIC_ASSERT(arg<4>(1, '2', 3.3, 4.4f, nonpod{}) == 4.4f);
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nonpod n = arg<5>(1, '2', 3.3, 4.4f, nonpod{});
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(void)n;
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// Check with non-pods before the index we're targetting.
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BOOST_HANA_STATIC_ASSERT(arg<2>(nonpod{}, '2') == '2');
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BOOST_HANA_STATIC_ASSERT(arg<3>(nonpod{}, '2', 3.3) == 3.3);
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BOOST_HANA_STATIC_ASSERT(arg<4>(nonpod{}, '2', 3.3, 4.4f) == 4.4f);
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}
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