Sprout/sprout/none.hpp

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/*=============================================================================
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Copyright (c) 2011-2016 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
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#ifndef SPROUT_NONE_HPP
#define SPROUT_NONE_HPP
#include <sprout/config.hpp>
namespace sprout {
//
// none_t
// none
//
struct none_t {};
namespace {
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SPROUT_STATIC_CONSTEXPR none_t none = {};
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} // anonymous-namespace
} // namespace sprout
#endif // #ifndef SPROUT_NONE_HPP