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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/equal.hpp>
- #include <boost/hana/integral_constant.hpp>
- #include <boost/hana/transform.hpp>
- #include <boost/hana/tuple.hpp>
- #include <string>
- namespace hana = boost::hana;
- using namespace hana::literals;
- struct Fish { std::string name; };
- struct Cat { std::string name; };
- struct Dog { std::string name; };
- int main() {
- hana::tuple<Fish, Cat, Dog> animals{{"Nemo"}, {"Garfield"}, {"Snoopy"}};
- animals[0_c].name = "Moby Dick"; // can modify elements in place, like std::tuple
- auto names = hana::transform(animals, [](auto a) {
- return a.name;
- });
- BOOST_HANA_RUNTIME_CHECK(names == hana::make_tuple("Moby Dick", "Garfield", "Snoopy"));
- }
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