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hana/example/searchable/none.cpp
2014-07-27 16:57:37 -04:00

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913 B
C++

/*
@copyright Louis Dionne 2014
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/constexpr.hpp>
#include <boost/hana/detail/static_assert.hpp>
#include <boost/hana/integral.hpp>
#include <boost/hana/list/instance.hpp>
#include <boost/hana/type.hpp>
#include <type_traits>
using namespace boost::hana;
using namespace literals;
int main() {
//! [main]
BOOST_HANA_CONSTEXPR_LAMBDA auto odd = [](auto x) {
return x % 2_c != 0_c;
};
BOOST_HANA_STATIC_ASSERT(none(odd, list(2_c, 4_c)));
BOOST_HANA_STATIC_ASSERT(!none(odd, list(1, 2)));
BOOST_HANA_STATIC_ASSERT(
!none(trait<std::is_void>, list(type<void>, type<char&>))
);
BOOST_HANA_STATIC_ASSERT(
none(trait<std::is_integral>, list(type<void>, type<char&>))
);
//! [main]
}