22 lines
587 B
C++
22 lines
587 B
C++
// Copyright Louis Dionne 2013-2017
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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#include <boost/hana/functional/placeholder.hpp>
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namespace hana = boost::hana;
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constexpr auto plus = hana::_ + hana::_;
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static_assert(plus(1, 2) == 1 + 2, "");
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constexpr auto increment = hana::_ + 1;
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static_assert(increment(1) == 2, "");
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constexpr auto twice = 2 * hana::_;
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static_assert(twice(1) == 2, "");
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// Extra arguments are ignored.
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static_assert(twice(1, "ignored") == 2, "");
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int main() { }
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