21 lines
402 B
C++
21 lines
402 B
C++
#pragma once
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#include "asl/meta.hpp"
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#define ASL_MOVE(expr_) (static_cast<::asl::un_ref_t<decltype(expr_)>&&>(expr_))
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#define ASL_FWD(expr_) (static_cast<decltype(expr_)&&>(expr_))
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namespace asl
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{
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template<typename T, typename U>
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T exchange(T& obj, U&& new_value)
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{
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T old_value = ASL_MOVE(obj);
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obj = ASL_FORWARD(new_value);
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return old_value;
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}
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} // namespace asl
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