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32 lines
1001 B
C++
32 lines
1001 B
C++
/*
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@copyright Louis Dionne 2014
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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*/
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#include <boost/hana/ext/std/tuple.hpp>
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#include <boost/hana/detail/constexpr.hpp>
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#include <boost/hana/detail/static_assert.hpp>
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#include <boost/hana/integral.hpp>
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#include <boost/hana/monad/laws.hpp>
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#include <tuple>
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using namespace boost::hana;
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BOOST_HANA_CONSTEXPR_LAMBDA auto f = [](auto x) {
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return std::make_tuple(x + int_<1>);
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};
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BOOST_HANA_CONSTEXPR_LAMBDA auto g = [](auto x) {
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return std::make_tuple(x * int_<3>);
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};
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int main() {
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BOOST_HANA_STATIC_ASSERT(Monad::laws::check(std::make_tuple(), int_<1>, f, g));
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BOOST_HANA_STATIC_ASSERT(Monad::laws::check(std::make_tuple(int_<1>), int_<1>, f, g));
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BOOST_HANA_STATIC_ASSERT(Monad::laws::check(std::make_tuple(int_<1>, int_<2>), int_<1>, f, g));
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BOOST_HANA_STATIC_ASSERT(Monad::laws::check(std::make_tuple(1, 2, 3, 4), int_<1>, f, g));
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}
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