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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_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)
);
}
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