// 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/ext/boost/fusion/tuple.hpp> #include <boost/hana/integral_constant.hpp> #include <boost/hana/transform.hpp> #include <boost/fusion/include/make_tuple.hpp> #include <boost/fusion/include/tuple.hpp> #include <string> namespace fusion = boost::fusion; namespace hana = boost::hana; struct Fish { std::string name; }; struct Cat { std::string name; }; struct Dog { std::string name; }; int main() { fusion::tuple<Fish, Cat, Dog> animals{Fish{"Nemo"}, Cat{"Garfield"}, Dog{"Snoopy"}}; hana::front(animals).name = "Moby Dick"; auto names = hana::transform(animals, [](auto a) { return a.name; }); BOOST_HANA_RUNTIME_CHECK(hana::equal( names, fusion::make_tuple("Moby Dick", "Garfield", "Snoopy") )); }