| 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/eval.hpp> |
| 6 | #include <boost/hana/functional/placeholder.hpp> |
| 7 | #include <boost/hana/lazy.hpp> |
| 8 | #include <boost/hana/transform.hpp> |
| 9 | namespace hana = boost::hana; |
| 10 | using hana::_; |
| 11 | |
| 12 | |
| 13 | int main() { |
| 14 | static_assert(hana::eval(hana::transform(hana::make_lazy(4 / _)(1), _ * 3)) == (4 / 1) * 3, ""); |
| 15 | |
| 16 | hana::transform(hana::make_lazy(4 / _)(0), _ * 3); // never evaluated |
| 17 | } |
| 18 |