r/functionalprogramming is a subreddit with 35k members. The community frequently discusses functional programming, languages, haskell, language, and lambda calculus, and the most common flair used is fp, question, intro to fp, conferences, and elm.
A subreddit for functional programming related material.
Popular Topics in r/functionalprogramming
#1
Functional Programming
88 posts
#2
Languages
14 posts
#3
Haskell
12 posts
#4
Language
12 posts
#5
Lambda Calculus
10 posts
#6
Functional
10 posts
#7
Elixir
8 posts
#8
Fp
8 posts
#9
Types
7 posts
#10
Ocaml
6 posts
Flair Used in r/functionalprogramming
#1
FP
: "Bend 2: a functional language that compiles to fast CPU and GPU code, with proofs"
29 posts
#2
Question
: "Beginner in functional programming"
16 posts
#3
Intro to FP
: "Pyfun: an F#-inspired language that compiles to readable Python"
5 posts
#4
Conferences
: "Alexis King: The Unreasonable Effectiveness of Constructive Data Modeling"
4 posts
#5
Elm
: "Native Elm (the real kind this time) · cekrem.github.io"
4 posts
#6
Haskell
: "Turbo Haskell"
3 posts
#7
Scala
: "Open-sourcing ShipReq – a requirements platform written in FP Scala/Scala.js"
3 posts
#8
TypeScript
: "Fast TypeScript linter to prioritise immutability"
3 posts
#9
λ Calculus
: "Where to learn about incremental lambda calculas?"
3 posts
#10
News
: "[Scala News] - August 2026 edition"
3 posts
Member Growth in r/functionalprogramming
Yearly
+3k members(10.0%)
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Last updated: October 15, 2026