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hana/test/list/functor.cpp
2014-05-20 16:26:59 -04:00

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C++

/*
* Copyright Louis Dionne 2014
* Distributed under the Boost Software License, Version 1.0.
* (See accompanying file LICENSE.md or copy at
* http://www.boost.org/LICENSE_1_0.txt)
*/
#include <boost/hana/list.hpp>
#include <boost/hana/detail/static_assert.hpp>
#include <boost/hana/integral.hpp>
using namespace boost::hana;
constexpr struct {
template <typename I>
constexpr auto operator()(I i) const { return i + int_<1>; }
} f{};
int main() {
BOOST_HANA_STATIC_ASSERT(fmap(f, list()) == list());
BOOST_HANA_STATIC_ASSERT(fmap(f, list(int_<1>)) == list(f(int_<1>)));
BOOST_HANA_STATIC_ASSERT(fmap(f, list(int_<1>, int_<2>)) == list(f(int_<1>), f(int_<2>)));
BOOST_HANA_STATIC_ASSERT(fmap(f, list(int_<1>, int_<2>, int_<3>)) == list(f(int_<1>), f(int_<2>), f(int_<3>)));
}