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37 lines
867 B
C++
37 lines
867 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/maybe.hpp>
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#include <boost/hana/detail/constexpr.hpp>
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#include <boost/hana/detail/minimal/comparable.hpp>
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#include <boost/hana/detail/static_assert.hpp>
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#include <boost/hana/functor/laws.hpp>
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#include <boost/hana/list/instance.hpp>
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#include <tuple>
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using namespace boost::hana;
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template <int i>
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constexpr auto x = detail::minimal::comparable<>(i);
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BOOST_HANA_CONSTEXPR_LAMBDA auto f = [](auto x) {
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return std::make_tuple(1, x);
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};
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BOOST_HANA_CONSTEXPR_LAMBDA auto g = [](auto x) {
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return std::make_tuple(2, x);
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};
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int main() {
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BOOST_HANA_STATIC_ASSERT(Functor::laws::check(
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list(nothing, just(x<0>)),
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list(f),
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list(g)
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));
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}
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