/*
@copyright Louis Dionne 2014
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/detail/assert.hpp>
#include <boost/hana/detail/constexpr.hpp>
#include <boost/hana/maybe.hpp>
using namespace boost::hana;


int main() {
    //! [main]
    BOOST_HANA_CONSTEXPR_LAMBDA auto inc = [](auto x) { return x + 1; };
    BOOST_HANA_CONSTEXPR_ASSERT(maybe('x', inc, just(1)) == 2);
    BOOST_HANA_CONSTEXPR_ASSERT(maybe('x', inc, nothing) == 'x');
    //! [main]
}