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https://github.com/bolero-MURAKAMI/Sprout.git
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35 lines
1.2 KiB
C++
35 lines
1.2 KiB
C++
/*=============================================================================
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Copyright (c) 2011-2013 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_FUNCTIONAL_POLYMORPHIC_CALL_FUN_HPP
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#define SPROUT_FUNCTIONAL_POLYMORPHIC_CALL_FUN_HPP
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#include <utility>
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#include <sprout/config.hpp>
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#include <sprout/utility/forward.hpp>
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namespace sprout {
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//
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// call_fun_t
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// call_fun_
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//
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struct call_fun_t {
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public:
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template<typename F, typename... As>
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SPROUT_CONSTEXPR decltype(std::declval<F>()(std::declval<As>()...))
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operator()(F&& f, As&&... as)
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const SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(std::declval<F>()(std::declval<As>()...)))
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{
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return sprout::forward<F>(f)(sprout::forward<As>(as)...);
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}
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};
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namespace {
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SPROUT_STATIC_CONSTEXPR sprout::call_fun_t call_fun_ = {};
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} // anonymous-namespace
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} // namespace sprout
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#endif // #ifndef SPROUT_FUNCTIONAL_POLYMORPHIC_CALL_FUN_HPP
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