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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/duplicate.hpp>
- #include <boost/hana/extract.hpp>
- #include <boost/hana/lazy.hpp>
- namespace hana = boost::hana;
- int main() {
- constexpr auto very_lazy = hana::duplicate(hana::make_lazy(3));
- static_assert(hana::extract(hana::extract(very_lazy)) == 3, "");
- }
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