Functional programming

In computer science, functional programming is a programming paradigm where programs are constructed by applying and composing functions. It is a declarative programming paradigm in which function definitions are trees of expressions that map values to other values, rather than a sequence of imperative statements which update the running state of the program.

GitHub: https://github.com/topics/functional-programming
Wikipedia: https://en.wikipedia.org/wiki/Functional_programming
Related Topics: oop, declarative-programming, procedural-programming, event-driven-programming,
Last updated: 2026-06-30 00:12:00 UTC
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https://github.com/martianoff/rules-gala

Bazel rules, a bzlmod extension, and a gazelle plugin for building, testing, and transpiling the GALA language — plus a Bazel module registry that publishes rules_gala.

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https://github.com/danieljharvey/website-face

Hakyll site for danieljharvey.github.io about mostly Haskell shit at the moment.

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https://github.com/chriniko13/scala-simple-tutorial

Inspired from official Tour of Scala (https://docs.scala-lang.org/tour/tour-of-scala.html)

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https://github.com/sheitak/funcprog2

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https://github.com/raiondesu/if-const

New word in javascript conditionals!

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https://github.com/bertrand31/data-structures-javascript

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https://github.com/clifftech123/ts_fun_practice

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https://github.com/thautwarm/xylearn

the way to fewer tasks and more convincing products.

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Asynchronous Promise based functional style utilities with full TypeScript support

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https://github.com/joebobmiles/joebobmiles

My user readme.

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https://github.com/imrafaelmerino/vertx-mongo-effect

Vertx-MongoDB-Effect enables interaction with MongoDB in a purely functional and reactive style, seamlessly integrating with Vertx-effect. This library requires familiarity with Vertx-effect, as both frameworks share a foundational reliance on immutability and persistent data structures provided by json-values.

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Adventures in functional JavaScript

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Iterative functions for functional programming in Go.

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https://github.com/JunggiKim/java-refined

Refinement and functional value types for Java 8+

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https://github.com/rajasegar/effpy

My own Functional Programming utilities in Javascript

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https://github.com/arodriguezfontana/functional-programming-unq

Prácticas realizadas para Programación Funcional de la UNQ.

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https://github.com/armadacore/essentials

TypeScript essentials for explicit error and absence handling - Option, Result, typed Exceptions and optional Callbacks the compiler actually enforces.

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https://github.com/mihailtd/functional-programming-comparison-go-js-python

Code examples for the Functional Programming Face-Off video on the Let's Talk Dev YouTube channel, comparing functional programming in Python, JavaScript, and Go.

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Programa Discover da Rocketseat

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https://github.com/ari-s-123/pdp-hw3

A cli tool built with Bun, TypeScript, and Functional Programming to process listings files from the AirBnB Get the Data page.

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https://github.com/erikmueller/slackoverflow

Private blog & cv

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自用的js库

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https://github.com/justdvnsh/func.py

A practical functional library for Python Lovers.

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https://github.com/maksim-ilin-f25/f

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https://github.com/vtramo/java-problems

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https://github.com/zlovtnik/frontend

A TypeScript/Bun/React frontend application for the Actix Web REST API backend with JWT authentication, multi-tenant support, and comprehensive functional programming patterns.

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https://github.com/j-christl/ocaml-utils

Some basic OCaml utility functions I will keep updating while learning functional programming

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https://github.com/neelsomani/smart-cache

A Python library that analyzes your module and automatically caches purely functional sections

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https://github.com/przucidlo/serverless-todo

Feature and infrastructure complete serverless app example.

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https://github.com/unosd/unofs

UnoFS is a purely functional semantic file system implemented in F#

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https://github.com/niuiic/fx-flow

A functional library for TypeScript/JavaScript.

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https://github.com/antwankakki/fct

functional cpp at compile time, the compiler turns to the perfectly slow interpreter XD

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https://github.com/profjordanov/scheme-prolog

'Logical and Functional Programming' & 'Intelligent Systems' practices of courses in University of economics - Varna

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https://github.com/jferard/yamft

YAMFT (Yet another `more-functools`) is another functional library for Python

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https://github.com/saidali-ibn-zafar/hard-parts-of-functional-js-fundamentals

Explore the increasingly popular paradigm of functional programming in JavaScript! You’ll learn how to wield and manipulate functions to develop more readable, maintainable and manageable codebases. You’ll go under the hood of powerful techniques like: Higher Order Functions, Function Composition, Pure Functions, and Immutability of State.

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