#pragma once

#if !defined(BAD_APPLE_OS_UTILITY_INCLUDED)
#define BAD_APPLE_OS_UTILITY_INCLUDED

#include <type_traits>

namespace std
{
template<typename T>
constexpr remove_reference_t<T>&& move(T&& val) noexcept
{
    return static_cast<remove_reference_t<T>&&>(val);
}

template<typename T>
constexpr void swap(T& first, T& second)
{
    T temp = std::move(first);
    first = std::move(second);
    second = std::move(temp);
}

template<typename T>
[[nodiscard]] constexpr T&& forward(remove_reference_t<T>& value)
{
    return static_cast<T&&>(value);
}

template<typename T, typename U = T>
[[nodiscard]] constexpr T exchange(T& obj, U&& newValue)
{
    T oldValue = std::move(obj);
    obj = std::forward<U>(newValue);
    return oldValue;
}
}

#endif // !defined(BAD_APPLE_OS_UTILITY_INCLUDED)