This book is one route in. It's intended for those who've programmed before but not necessarily with functional languages. I suspect intros to any of the funct

This book is one route in. It's intended for those who've programmed before but not necessarily with functional languages. I suspect intros to any of the functional languages would be fine (e.g Haskell, Scala, F#). There's even a Coursera course on Scala.