// 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 namespace hana = boost::hana; static_assert(hana::just(1).value_or('x') == 1, ""); static_assert(hana::nothing.value_or('x') == 'x', ""); int main() { }