mirror of
https://github.com/boostorg/hana.git
synced 2026-02-14 12:52:10 +00:00
26 lines
882 B
C++
26 lines
882 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/maybe.hpp>
|
|
|
|
#include <boost/hana/detail/constexpr.hpp>
|
|
#include <boost/hana/detail/static_assert.hpp>
|
|
using namespace boost::hana;
|
|
|
|
|
|
int main() {
|
|
BOOST_HANA_STATIC_ASSERT(lift<Maybe>(1) == just(1));
|
|
BOOST_HANA_STATIC_ASSERT(lift<Maybe>('1') == just('1'));
|
|
BOOST_HANA_STATIC_ASSERT(lift<Maybe>(1.1) == just(1.1));
|
|
|
|
BOOST_HANA_CONSTEXPR_LAMBDA auto f = [](auto x) { return just(x + 1); };
|
|
constexpr auto x = 3;
|
|
BOOST_HANA_STATIC_ASSERT(ap(nothing, nothing) == nothing);
|
|
BOOST_HANA_STATIC_ASSERT(ap(just(f), nothing) == nothing);
|
|
BOOST_HANA_STATIC_ASSERT(ap(nothing, just(x)) == nothing);
|
|
BOOST_HANA_STATIC_ASSERT(ap(just(f), just(x)) == just(f(x)));
|
|
}
|