this post was submitted on 27 Mar 2025
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Programmer Humor

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stop (sh.itjust.works)
submitted 5 days ago by kora@sh.itjust.works to c/programmer_humor@programming.dev
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[–] dreadbeef@lemmy.dbzer0.com 5 points 5 days ago* (last edited 5 days ago)

Not really, it's just good practice. You write your application in layers, and the outer layer/boundary is where you want your side effects and that outer layer takes the crazy effectful world and turns it sane with nice data types and type classes and whatnot and then your inner layers operate on that. Data goes down the layers then back up, at least in my experience with functional projects in OCaml, F#, Clojure, and Haskell.

The real sauce is immutability by default/hard-to-do mutation. I love refs in OCaml and Clojure, so much better than mutation. Most of the benefits of FP are that and algebraic data types, in that order imo.