mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-12-27 21:45:42 +00:00
28 lines
912 B
C++
28 lines
912 B
C++
/*=============================================================================
|
|
Copyright (c) 2011-2017 Bolero MURAKAMI
|
|
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)
|
|
=============================================================================*/
|
|
#ifndef SPROUT_UTILITY_EXCAHNGE_HPP
|
|
#define SPROUT_UTILITY_EXCAHNGE_HPP
|
|
|
|
#include <sprout/config.hpp>
|
|
#include <sprout/utility/forward.hpp>
|
|
#include <sprout/utility/move.hpp>
|
|
|
|
namespace sprout {
|
|
//
|
|
// 20.2.3 exchange
|
|
//
|
|
template<typename T, typename U = T>
|
|
inline SPROUT_CXX14_CONSTEXPR T
|
|
exchange(T& obj, U&& new_val) {
|
|
T old_val = sprout::move(obj);
|
|
obj = SPROUT_FORWARD(U, new_val);
|
|
return old_val;
|
|
}
|
|
} // namespace sprout
|
|
|
|
#endif // #ifndef SPROUT_UTILITY_EXCAHNGE_HPP
|