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28 lines
820 B
C++
28 lines
820 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/detail/assert.hpp>
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#include <boost/hana/detail/constexpr.hpp>
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#include <boost/hana/integral.hpp>
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#include <boost/hana/maybe.hpp>
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using namespace boost::hana;
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int main() {
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//! [main]
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BOOST_HANA_CONSTEXPR_LAMBDA auto odd = [](auto x) {
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return x % int_<2> != int_<0>;
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};
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BOOST_HANA_CONSTANT_ASSERT(find(odd, just(int_<3>)) == just(int_<3>));
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BOOST_HANA_CONSTANT_ASSERT(find(odd, just(int_<2>)) == nothing);
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BOOST_HANA_CONSTANT_ASSERT(find(odd, nothing) == nothing);
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BOOST_HANA_CONSTANT_ASSERT(all(odd, just(int_<3>)));
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BOOST_HANA_CONSTANT_ASSERT(all(odd, nothing));
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//! [main]
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}
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