123456789101112131415161718192021222324252627 |
- // 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_if.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 negative = [](auto x) {
- return x < 0;
- };
- BOOST_HANA_CONSTEXPR_LAMBDA auto negate = [](auto x) {
- return -x;
- };
- int main() {
- BOOST_HANA_CONSTEXPR_CHECK(
- hana::adjust_if(hana::make_tuple(-3, -2, -1, 0, 1, 2, 3), negative, negate)
- ==
- hana::make_tuple(3, 2, 1, 0, 1, 2, 3)
- );
- }
|