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32 lines
1.0 KiB
C++
32 lines
1.0 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/ext/std/tuple.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 <tuple>
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using namespace boost::hana;
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BOOST_HANA_CONSTEXPR_LAMBDA auto tuple = [](auto ...xs) {
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return std::make_tuple(xs...);
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};
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int main() {
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BOOST_HANA_STATIC_ASSERT(flatten(tuple(tuple(), tuple())) == tuple());
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BOOST_HANA_STATIC_ASSERT(flatten(tuple(tuple(int_<0>), tuple())) == tuple(int_<0>));
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BOOST_HANA_STATIC_ASSERT(flatten(tuple(tuple(), tuple(int_<0>))) == tuple(int_<0>));
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BOOST_HANA_STATIC_ASSERT(flatten(tuple(tuple(int_<0>), tuple(int_<1>))) == tuple(int_<0>, int_<1>));
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BOOST_HANA_STATIC_ASSERT(
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flatten(tuple(tuple(0, int_<1>), tuple(), tuple('2', 3.3), tuple(int_<4>)))
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==
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tuple(0, int_<1>, '2', 3.3, int_<4>)
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);
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}
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