1 // Copyright Louis Dionne 2013-2017
2 // Distributed under the Boost Software License, Version 1.0.
3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
4
5 #include <boost/hana/assert.hpp>
6 #include <boost/hana/config.hpp>
7 #include <boost/hana/equal.hpp>
8 #include <boost/hana/replace_if.hpp>
9 #include <boost/hana/tuple.hpp>
10 namespace hana = boost::hana;
11
12
__anon9e8193090102(auto x) 13 BOOST_HANA_CONSTEXPR_LAMBDA auto negative = [](auto x) {
14 return x < 0;
15 };
16
main()17 int main() {
18 BOOST_HANA_CONSTEXPR_CHECK(
19 hana::replace_if(hana::make_tuple(-3, -2, -1, 0, 1, 2, 3), negative, 0)
20 ==
21 hana::make_tuple(0, 0, 0, 0, 1, 2, 3)
22 );
23 }
24