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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/bool.hpp>
- #include <boost/hana/config.hpp>
- #include <boost/hana/eval.hpp>
- #include <boost/hana/if.hpp>
- #include <boost/hana/lazy.hpp>
- namespace hana = boost::hana;
- int main() {
- BOOST_HANA_CONSTEXPR_LAMBDA auto f = hana::make<hana::lazy_tag>([](auto x) {
- return 1 / x;
- });
- BOOST_HANA_CONSTEXPR_LAMBDA auto g = hana::make_lazy([](auto x) {
- return x + 1;
- });
- BOOST_HANA_CONSTEXPR_CHECK(hana::eval(hana::if_(hana::false_c, f(0), g(0))) == 0 + 1);
- }
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