// 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/integral_constant.hpp> #include <boost/hana/value.hpp> namespace hana = boost::hana; int main() { auto i = hana::integral_c<int, 3>; // notice no constexpr static_assert(hana::value<decltype(i)>() == 3, ""); static_assert(hana::value(i) == 3, "value(i) is always a constant expression!"); }