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hana/test/functional/flip.cpp
2014-06-18 10:06:19 -04:00

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772 B
C++

/*
@copyright Louis Dionne 2014
Distributed under the Boost Software License, Version 1.0.
(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
*/
#include <boost/hana/functional.hpp>
#include <boost/hana/detail/constexpr.hpp>
#include <boost/hana/detail/static_assert.hpp>
#include <tuple>
using namespace boost::hana;
BOOST_HANA_CONSTEXPR_LAMBDA auto f = [](auto ...xs) {
return std::make_tuple(xs...);
};
int main() {
BOOST_HANA_STATIC_ASSERT(flip(f)(1, '2') == f('2', 1));
BOOST_HANA_STATIC_ASSERT(flip(f)(1, '2', 3.3) == f('2', 1, 3.3));
BOOST_HANA_STATIC_ASSERT(flip(f)(1, '2', 3.3, 4.4f) == f('2', 1, 3.3, 4.4f));
BOOST_HANA_STATIC_ASSERT(flip(f)(1, '2', 3.3, 4.4f, nullptr) == f('2', 1, 3.3, 4.4f, nullptr));
}