1// Copyright Louis Dionne 2013-2022
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
5#include <boost/hana/integral_constant.hpp>
6#include <boost/hana/value.hpp>
7namespace hana = boost::hana;
8
9
10int main() {
11 auto i = hana::integral_c<int, 3>; // notice no constexpr
12 static_assert(hana::value<decltype(i)>() == 3, "");
13 static_assert(hana::value(i) == 3, "value(i) is always a constant expression!");
14}
15

source code of boost/libs/hana/example/value.cpp