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// 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/functional/placeholder.hpp>
namespace hana = boost::hana;
constexpr auto plus = hana::_ + hana::_;
static_assert(plus(1, 2) == 1 + 2, "");
constexpr auto increment = hana::_ + 1;
static_assert(increment(1) == 2, "");
constexpr auto twice = 2 * hana::_;
static_assert(twice(1) == 2, "");
// Extra arguments are ignored.
static_assert(twice(1, "ignored") == 2, "");
int main() { }
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