I love that ReactiveX supports the same reactive paradigm across so many languages, especially Swift (also Java, Scala, C#, C++, Clojure, JavaScript, Python, Groovy, JRuby, ..).
👉 ReactiveX – An API for asynchronous programming with observable streams
ReactiveX is a combination of the best ideas from the Observer pattern, the Iterator pattern, and functional programming
And don’t forget RXMarbles for some experimenting with Rx.
patmcg.com 