Method swap

concurrentqueue.h:3335–3341

		}
		
		inline void swap(ImplicitProducerKVP& other) MOODYCAMEL_NOEXCEPT
		{
			if (this != &other) {
				details::swap_relaxed(key, other.key);
				std::swap(value, other.value);
			}
		}
	};
	
	template<typename XT, typename XTraits>