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23 lines
577 B
C++
23 lines
577 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/assert.hpp>
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#include <boost/hana/detail/constexpr.hpp>
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#include <boost/hana/functional.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 factorial = fix([](auto fact, auto n) {
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if (n == 0) return 1;
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else return n * fact(n - 1);
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});
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BOOST_HANA_CONSTEXPR_CHECK(factorial(5) == 120);
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//! [main]
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}
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