Functional Programming In Scala by Paul Chiusano

What people said (1)

• pxc · 2025-10-31 in John Carmack on mutable variables

  If you read through the Big Red Book¹ or its counterpart for Kotlin², it's quite explicit about the goals with these techniques for managing effects, and goes over rewriting imperative code to manage state in a "pure" way. I think the authors are quite aware of the relationship between these techniques and mutable state! I imagine it's similar for other canonical functional programming texts. Bes…