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- // Copyright Louis Dionne 2013-2017
- // 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/assert.hpp>
- #include <boost/hana/drop_front_exactly.hpp>
- #include <boost/hana/equal.hpp>
- #include <boost/hana/integral_constant.hpp>
- #include <boost/hana/tuple.hpp>
- namespace hana = boost::hana;
- constexpr auto xs = hana::make_tuple(0, '1', 2.0);
- static_assert(hana::drop_front_exactly(xs, hana::size_c<1>) == hana::make_tuple('1', 2.0), "");
- static_assert(hana::drop_front_exactly(xs, hana::size_c<2>) == hana::make_tuple(2.0), "");
- BOOST_HANA_CONSTANT_CHECK(hana::drop_front_exactly(xs, hana::size_c<3>) == hana::make_tuple());
- // drop_front_exactly(xs) is equivalent to drop_front_exactly(xs, size_t<1>)
- static_assert(hana::drop_front_exactly(xs) == hana::make_tuple('1', 2.0), "");
- int main() { }
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