mirror of
https://github.com/boostorg/hana.git
synced 2026-02-22 15:32:11 +00:00
32 lines
926 B
C++
32 lines
926 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/set.hpp>
|
|
|
|
#include <boost/hana/detail/constexpr.hpp>
|
|
#include <boost/hana/detail/minimal/comparable.hpp>
|
|
#include <boost/hana/detail/static_assert.hpp>
|
|
using namespace boost::hana;
|
|
|
|
|
|
template <int i>
|
|
constexpr auto x = detail::minimal::comparable<>(i);
|
|
|
|
BOOST_HANA_CONSTEXPR_LAMBDA auto is = [](auto x) {
|
|
return [=](auto y) { return equal(x, y); };
|
|
};
|
|
|
|
int main() {
|
|
BOOST_HANA_STATIC_ASSERT(!any(is(x<1>), set()));
|
|
|
|
BOOST_HANA_STATIC_ASSERT( any(is(x<1>), set(x<1>)));
|
|
BOOST_HANA_STATIC_ASSERT(!any(is(x<2>), set(x<1>)));
|
|
|
|
BOOST_HANA_STATIC_ASSERT( any(is(x<1>), set(x<1>, x<2>)));
|
|
BOOST_HANA_STATIC_ASSERT( any(is(x<2>), set(x<1>, x<2>)));
|
|
BOOST_HANA_STATIC_ASSERT(!any(is(x<3>), set(x<1>, x<2>)));
|
|
}
|