Keywords: HaskellR, Haskell, Interoperability Surely there’s no need to explain to useR! attendees what’s so great about R! Haskell, on the other hand, is a great language too - statically typed, purely functional, lazy, fast, and with that, you know, cool and mathy touch … ;-) Statistics, data science, and machine learning, however, are not that easy to do from Haskell, as it does not have all the specialized and comfortable-to-use libraries R has. Fortunately, the guys at tweag.io developed HaskellR, providing Haskell with full R interoperability. With ihaskell-inline-R, R can even be used in IHaskell notebooks. In this session, we’ll show how to get started with HaskellR, and how you can get the best of both worlds.