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1 | // Copyright Louis Dionne 2013-2016 |
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/duplicate.hpp> | |
6 | #include <boost/hana/extract.hpp> | |
7 | #include <boost/hana/lazy.hpp> | |
8 | namespace hana = boost::hana; | |
9 | ||
10 | ||
11 | int main() { | |
12 | constexpr auto very_lazy = hana::duplicate(hana::make_lazy(3)); | |
13 | static_assert(hana::extract(hana::extract(very_lazy)) == 3, ""); | |
14 | } |