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Use finer grained assertions acknowledging Constants

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Louis Dionne
2014-08-05 10:37:54 -04:00
parent bf5eb10c46
commit d132db0ebf
436 changed files with 2672 additions and 2554 deletions
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26
example/maybe/only_when.cpp
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@@ -4,24 +4,24 @@ 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/detail/assert.hpp>
#include <boost/hana/detail/constexpr.hpp>
#include <boost/hana/detail/static_assert.hpp>
#include <boost/hana/integral.hpp>
#include <boost/hana/maybe.hpp>
using namespace boost::hana;
int main() {
//! [main]
BOOST_HANA_CONSTEXPR_LAMBDA auto even = [](auto x) {
return x % int_<2> == int_<0>;
};
//! [main]
BOOST_HANA_CONSTEXPR_LAMBDA auto even = [](auto x) {
return x % int_<2> == int_<0>;
};
BOOST_HANA_CONSTEXPR_LAMBDA auto half = [](auto x) {
return x / int_<2>;
};
BOOST_HANA_CONSTEXPR_LAMBDA auto half = [](auto x) {
return x / int_<2>;
};
BOOST_HANA_STATIC_ASSERT(only_when(even, half, int_<4>) == just(int_<2>));
BOOST_HANA_STATIC_ASSERT(only_when(even, half, int_<3>) == nothing);
//! [main]
}
BOOST_HANA_CONSTANT_ASSERT(only_when(even, half, int_<4>) == just(int_<2>));
BOOST_HANA_CONSTANT_ASSERT(only_when(even, half, int_<3>) == nothing);
//! [main]
int main() { (void)even; (void)half; }