| 1 | // Copyright Louis Dionne 2013-2022 |
|---|---|
| 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/all_of.hpp> |
| 6 | #include <boost/hana/assert.hpp> |
| 7 | #include <boost/hana/equal.hpp> |
| 8 | #include <boost/hana/find_if.hpp> |
| 9 | #include <boost/hana/integral_constant.hpp> |
| 10 | #include <boost/hana/mod.hpp> |
| 11 | #include <boost/hana/not_equal.hpp> |
| 12 | #include <boost/hana/optional.hpp> |
| 13 | namespace hana = boost::hana; |
| 14 | |
| 15 | |
| 16 | auto odd = [](auto x) { |
| 17 | return x % hana::int_c<2> != hana::int_c<0>; |
| 18 | }; |
| 19 | |
| 20 | BOOST_HANA_CONSTANT_CHECK(hana::find_if(hana::just(hana::int_c<3>), odd) == hana::just(hana::int_c<3>)); |
| 21 | BOOST_HANA_CONSTANT_CHECK(hana::find_if(hana::just(hana::int_c<2>), odd) == hana::nothing); |
| 22 | BOOST_HANA_CONSTANT_CHECK(hana::find_if(hana::nothing, odd) == hana::nothing); |
| 23 | |
| 24 | BOOST_HANA_CONSTANT_CHECK(hana::all_of(hana::just(hana::int_c<3>), odd)); |
| 25 | BOOST_HANA_CONSTANT_CHECK(hana::all_of(hana::nothing, odd)); |
| 26 | |
| 27 | int main() { } |
| 28 |