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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/assert.hpp>
- #include <boost/hana/config.hpp>
- #include <boost/hana/functional/compose.hpp>
- namespace hana = boost::hana;
- int main() {
- BOOST_HANA_CONSTEXPR_LAMBDA auto to_char = [](int x) {
- return static_cast<char>(x + 48);
- };
- BOOST_HANA_CONSTEXPR_LAMBDA auto increment = [](auto x) {
- return x + 1;
- };
- BOOST_HANA_CONSTEXPR_CHECK(hana::compose(to_char, increment)(3) == '4');
- }
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