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hana/example/list/monad.cpp
2014-12-06 16:30:16 -05:00

27 lines
650 B
C++

/*
@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/assert.hpp>
#include <boost/hana/tuple.hpp>
using namespace boost::hana;
int main() {
//! [main]
BOOST_HANA_CONSTEXPR_LAMBDA auto f = [](auto x) {
return tuple(x, -x);
};
BOOST_HANA_CONSTEXPR_CHECK((tuple(1, 2, 3) | f) == tuple(1, -1, 2, -2, 3, -3));
BOOST_HANA_CONSTEXPR_CHECK(
flatten(tuple(tuple(1, 2), tuple(3, 4), tuple(tuple(5, 6))))
==
tuple(1, 2, 3, 4, tuple(5, 6))
);
//! [main]
}