mirror of
https://github.com/boostorg/hana.git
synced 2026-02-14 12:52:10 +00:00
32 lines
1.0 KiB
C++
32 lines
1.0 KiB
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/list.hpp>
|
|
|
|
#include <boost/hana/detail/constexpr.hpp>
|
|
#include <boost/hana/detail/static_assert.hpp>
|
|
#include <boost/hana/integral.hpp>
|
|
using namespace boost::hana;
|
|
|
|
|
|
template <int ...i>
|
|
BOOST_HANA_CONSTEXPR_LAMBDA auto ilist = list_c<int, i...>;
|
|
|
|
BOOST_HANA_CONSTEXPR_LAMBDA auto odd = [](auto x) {
|
|
return x % int_<2> != int_<0>;
|
|
};
|
|
|
|
int main() {
|
|
BOOST_HANA_STATIC_ASSERT(take_until(odd, ilist<>) == ilist<>);
|
|
BOOST_HANA_STATIC_ASSERT(take_until(odd, ilist<1>) == ilist<>);
|
|
BOOST_HANA_STATIC_ASSERT(take_until(odd, ilist<1, 2>) == ilist<>);
|
|
|
|
BOOST_HANA_STATIC_ASSERT(take_until(odd, ilist<0, 1, 2>) == ilist<0>);
|
|
BOOST_HANA_STATIC_ASSERT(take_until(odd, ilist<0, 2, 3>) == ilist<0, 2>);
|
|
BOOST_HANA_STATIC_ASSERT(take_until(odd, ilist<0, 2, 4>) == ilist<0, 2, 4>);
|
|
BOOST_HANA_STATIC_ASSERT(take_until(odd, ilist<0, 2, 1>) == ilist<0, 2>);
|
|
}
|