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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/adjust.hpp>
- #include <boost/hana/assert.hpp>
- #include <boost/hana/config.hpp>
- #include <boost/hana/equal.hpp>
- #include <boost/hana/tuple.hpp>
- namespace hana = boost::hana;
- BOOST_HANA_CONSTEXPR_LAMBDA auto negate = [](auto x) {
- return -x;
- };
- int main() {
- BOOST_HANA_CONSTEXPR_CHECK(
- hana::adjust(hana::make_tuple(1, 4, 9, 2, 3, 4), 4, negate)
- ==
- hana::make_tuple(1, -4, 9, 2, 3, -4)
- );
- }
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