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hana/example/maybe/from_just.cpp
2014-08-05 10:37:54 -04:00

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/*
@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_ASSERT(from_just(just('x')) == 'x');
// from_just(nothing); // compile-time static assertion
// ! [main]
}