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std::experi...es::exchange(3) C++ Standard Libarystd::experi...es::exchange(3) NAME std::experimental::ranges::exchange - std::experimental::ranges::ex- change Synopsis Defined in header <experimental/ranges/utility> template< MoveConstructible T, class U = T > requires Assignable<T&, U> (ranges TS) constexpr T exchange(T& obj, U&& new_val) noexcept(/* see below */); Replaces the value of obj with new_value and returns the old value of obj, as if by T old_value = std::move(obj); obj = std::forward<U>(new_value); return old_value; Parameters obj - object whose value to replace new_value - the value to assign to obj Return value The old value of obj Exceptions noexcept specification: noexcept(std::is_nothrow_move_constructible<T>::value && std::is_nothrow_assignable<T&, U>::value) Example This section is incomplete Reason: no example See also exchange replaces the argument with a new value and returns its pre- vious value (C++14) (function template) http://cppreference.com 2022.07.31 std::experi...es::exchange(3)
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