hana/example/ext/std/array/foldable.cpp
2017-01-07 14:14:18 -08:00

22 lines
591 B
C++

// Copyright Louis Dionne 2013-2017
// 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/ext/std/array.hpp>
#include <boost/hana/unpack.hpp>
#include <array>
namespace hana = boost::hana;
int main() {
std::array<int, 5> a = {{0, 1, 2, 3, 4}};
auto b = hana::unpack(a, [](auto ...i) {
return std::array<int, sizeof...(i)>{{(i + 10)...}};
});
BOOST_HANA_RUNTIME_CHECK(b == std::array<int, 5>{{10, 11, 12, 13, 14}});
}