// 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 #include #include #include #include namespace hana = boost::hana; static_assert(hana::fold_left(hana::make_pair(1, 3), 0, hana::plus) == 4, ""); static_assert(hana::fold_right(hana::make_pair(1, 3), 0, hana::minus) == -2, ""); int main() { }