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hana/example/list/applicative.cpp
2014-12-06 16:30:16 -05:00

35 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/assert.hpp>
#include <boost/hana/detail/constexpr.hpp>
#include <boost/hana/ext/std/tuple.hpp>
#include <boost/hana/functional.hpp>
#include <boost/hana/pair.hpp>
#include <boost/hana/tuple.hpp>
#include <tuple>
using namespace boost::hana;
int main() {
//! [main]
BOOST_HANA_CONSTEXPR_CHECK(lift<Tuple>('x') == tuple('x'));
BOOST_HANA_CONSTEXPR_CHECK(equal(lift<ext::std::Tuple>('x'), std::make_tuple('x')));
BOOST_HANA_CONSTEXPR_LAMBDA auto f = pair;
BOOST_HANA_CONSTEXPR_LAMBDA auto g = flip(pair);
BOOST_HANA_CONSTEXPR_CHECK(
ap(tuple(f, g), tuple(1, 2, 3), tuple('a', 'b'))
==
tuple(
f(1, 'a'), f(1, 'b'), f(2, 'a'), f(2, 'b'), f(3, 'a'), f(3, 'b'),
g(1, 'a'), g(1, 'b'), g(2, 'a'), g(2, 'b'), g(3, 'a'), g(3, 'b')
)
);
//! [main]
}