Meituan Technology Team

Nov 3, 2015 · Mobile Development

Understanding Hot and Cold Signals in ReactiveCocoa (RAC)

The article explains that in ReactiveCocoa cold signals are plain RACSignal instances that start their work per subscriber, while hot signals are RACSubject (or subclasses) that broadcast a single execution to all observers, and demonstrates converting cold to hot using subjects, multicast operators, and replay helpers such as replayLazily to share network requests.