24 lines
780 B
C++
24 lines
780 B
C++
// 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/assert.hpp>
|
|
#include <boost/hana/chain.hpp>
|
|
#include <boost/hana/config.hpp>
|
|
#include <boost/hana/equal.hpp>
|
|
#include <boost/hana/flatten.hpp>
|
|
#include <boost/hana/optional.hpp>
|
|
namespace hana = boost::hana;
|
|
|
|
|
|
int main() {
|
|
BOOST_HANA_CONSTEXPR_LAMBDA auto inc = [](auto x) {
|
|
return hana::just(x + 1);
|
|
};
|
|
|
|
BOOST_HANA_CONSTEXPR_CHECK(hana::chain(hana::just(1), inc) == hana::just(2));
|
|
BOOST_HANA_CONSTANT_CHECK(hana::chain(hana::nothing, inc) == hana::nothing);
|
|
|
|
BOOST_HANA_CONSTEXPR_CHECK(hana::flatten(hana::just(hana::just(2))) == hana::just(2));
|
|
}
|