unpack.cpp 548 B

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  1. // Copyright Louis Dionne 2013-2017
  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. #include <boost/hana/assert.hpp>
  5. #include <boost/hana/config.hpp>
  6. #include <boost/hana/tuple.hpp>
  7. #include <boost/hana/unpack.hpp>
  8. namespace hana = boost::hana;
  9. int main() {
  10. BOOST_HANA_CONSTEXPR_LAMBDA auto add = [](auto x, auto y, auto z) {
  11. return x + y + z;
  12. };
  13. BOOST_HANA_CONSTEXPR_CHECK(hana::unpack(hana::make_tuple(1, 2, 3), add) == 6);
  14. }