Lost in all the complaining about FRP's etymology is that the real FRP meets a basic principle that Rx doesn't - it's purely functional. Deterministic, referent

Lost in all the complaining about FRP's etymology is that the real FRP meets a basic principle that Rx doesn't - it's purely functional. Deterministic, referential transparency, etc. That's why it's useful, and that's also why there aren't many libraries for it, it's apparently extremely hard to implement. I really like Rx and I am using it in projects I'm currently working on, but there's still that basic discomfort that it's not purely functional.