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: 2026-06-24 00:08:05 UTC
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https://github.com/davidlee18/minihaskell

a little, functional, and lazy language

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Last synced: 30 Jan 2026

https://github.com/appsweet-co/ts-utils

Utility functions for TypeScript

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a command line logic game in common lisp

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https://github.com/mhbxyz/fptk

Pragmatic functional programming helpers for Python.

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https://github.com/shakadak/ft_turing

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https://github.com/mtumilowicz/scala-zio2-test-aspects-property-based-testing-workshop

Introduction to test aspects and property based testing.

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https://github.com/rjdestigter/lazy-reducers-example

An example of using the IO Monad to lazily inject reducers into the Redux store

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https://github.com/mrgravity817/elastack

OTP stack server that pushes and pops

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My attempts for the Programming Languages Lab (CS 431 Course) Assignments at IITG

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A simple, lightweight, Maybe implementation in JavaScript.

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https://github.com/oelin/hyper-reducer

A generalization of reduce() to arbitrary arity.

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Wang Tiles generator in Ocaml

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https://github.com/anicolaspp/gnsource

Experimenta Lazy Streams for Go

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https://github.com/bertrand31/exercicesalgo

💡 Collection of algorithmic exercises taken for fun from various sources

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https://github.com/dragos-tudor/frontend-rendering

Rewritten React core library [functional principles].

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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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Transport-neutral Agent Communication Protocol for GALA: content-hash message identity, idempotent dedup, a delivery/liveness FSM, and a generic agent-run contract — with a Claude backend.

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https://github.com/tsnobip/best-practices-and-fp

Programmations fonctionnelle et bonnes pratiques de développement logiciel

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https://github.com/jccampagne/stuff

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https://github.com/rom-chik/kma_fp

Functional programming course on Haskell.

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https://github.com/exbotanical/heuristics

Useful heuristics, type checks, and validation helpers for JavaScript and TypeScript

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https://github.com/carlossanabriam/csharp-basics

Some projects related to OOP, functional programming and parallel programming in C#

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https://github.com/xodio/eslint-plugin-xod-fp

Limit the chaos while doing FP in JS

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https://github.com/mateogiuffra/estrd2024s1

trabajos prácticos realizados en la materia Estructura de Datos de la Universidad Nacional de Quilmes (UNQ)

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https://github.com/sigmasoldi3r/ts-option

Optional values for typescript

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https://github.com/ricardorobledo/programacionfuncional-python

Recopilación de ejercicios de programación funcional en Python

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https://github.com/thautwarm/xylearn

the way to fewer tasks and more convincing products.

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https://github.com/darren277/haskell-blockchain

A simple blockchain written in Haskell along with a Haskell web server for interacting with it along with Postgres interactivity.

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https://github.com/milaziabchenko/custom-music-player-with-dropdown-select

Custom music player coupled with custom-made dropdown select, built with HTML, CSS, and JavaScript, combining FP and OOP approaches, and using the Web Audio API functionality

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https://github.com/dictybase-docker/crusher

CLI tool for building OCI images, creating Crush sandbox containers, and packing Docker Sandbox agent kits — powered by fp-go functional programming combinators.

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https://github.com/qard/potentially

A maybe/option type implementation with separate derived types to reduce branching

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https://github.com/kczulko/astar

A* algorithm

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https://github.com/lichaojacobs/my_util_lib

工作中总结的公共类库、小工具，用来提高工作效率以及代码整洁度

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https://github.com/mavaji/ke2019

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https://github.com/ethern-myth/javascript

OOP, Arrays and Objects and more

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https://github.com/tricinel/cuddy

An aggregation pipeline built in a functional programming style that lets you search, group, order and transform a collection.

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https://github.com/ardywsptr/phpdasar

Materi PHP dasar playlist youtube channel Web Programming Unpas

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https://github.com/quacksouls/jaf

Adventures in functional JavaScript

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https://github.com/zhongzc/gparser

A naive parser combinator library

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https://github.com/asarkar/hackerrank-fp-haskell

Functional Programming code challenges on HackerRank

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https://github.com/yuriykravets/rockpaperscissors

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https://github.com/dimasmiftah/structuring

Structuring data from .txt file to JavaScript object literal using higher-order functions.

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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/nrissot/DPF-2024-BinaryTree

🐫 Code OCaml du projet de Programmation Fonctionnelle de L2S4

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https://github.com/sorja/haskell-2018-ifp

Introduction to Functional Programming (Haskell). Repository for University of Helsinki course TKT21014.

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https://github.com/ryanhill1/command-line-checkers

Checkers with AI.

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https://github.com/arthi-chaud/j4hskl

JSON for Haskell

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https://github.com/ethern-myth/spring-postgres

Java SpringBoot PostgreSQL RestAPI

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https://github.com/rockofox/servant-miso-starter

A minimal Nix-first template for a full-stack Haskell app

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https://github.com/luismendes070/udemy

[UDEMY SEM DEMANDA 2023]

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https://github.com/spacesoldier/starty

a lightweight framework which helps building modular and configurable Node.js applications

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https://github.com/euler-b/firts_steps_with_elm

Repositorio destinado a ser la guia de inicio para entender este lenguaje

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https://github.com/emilydaykin/gifter

🎁 A full-stack, tested & responsive e-commerce site to browse and buy gifts for any occasion

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https://github.com/kimpro82/myfunctionalprogrammingpractice

Functional programming is definitely a devil's plot!

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https://github.com/yasmeentarek1/peg_reversal_game

Board game where the goal is to flip all black pegs on board to white, with pegs flipping only if adjacent to a white peg.

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https://github.com/pavelannin/monadic-kotlin

Monadic is a distributed multiplatform Kotlin framework that provides a way to write code from functional programming

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https://github.com/slemus9/plfa

Solutions to the book: Programming Language Foundations in Agda, from Wadler, Philip, Wen Kokke, and Jeremy G. Siek

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https://github.com/nikvoronin/funsokoban

Minimalistic functional Sokoban (console, no mutable vars). Initially vibe coded with ChatGPT 5. Brought to working condition by Human Being 45.

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https://github.com/yanick/updeep-remeda

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https://github.com/zerone0x/haskell99

Haskell 99 to help me learn functional promgramming

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https://github.com/carlosvinimsouza/projeto-livro-python

Primeiro trabalho de extensão com Python

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https://github.com/p-obrthr/functional-csharp

functional experimentation with C#

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https://github.com/stevegilham/presentations

General technical talks

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https://github.com/asarkar/exercism-haskell

https://exercism.org/tracks/haskell

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https://github.com/leonardonicola/fp

Utility library for functional programming in Typescript

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https://github.com/iosialectus/haskellcipherplay

Implementations of RSA, Blum Blum Shub PRNG, affine and polyalphabetic ciphers, and supporting number theory in Haskell.

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https://github.com/scalateams/scalateams-claude-plugin

Specialist Claude Code agents for the Scala ecosystem — ZIO, Pekko, Cats Effect, build tools, codecs, HTTP, databases, and testing.

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https://github.com/latrovalievioan/fp-drill

I'm determined to learn what a Monad is!

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https://github.com/johnnynotsolucky/fu

Ramda, but shitty and without the docs.

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https://github.com/robertdober/testdrivingvim

Developping some common patterns in VimL, Test Driven.

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https://github.com/btylrob/btylrob.github.io

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https://github.com/mansagroup/eslint-config

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https://github.com/tsheporamantso/oop-projects

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https://github.com/filipondios/something

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https://github.com/dhershman1/mondrian-elm

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https://github.com/sophiecollard/variance

Simple examples to illustrate the differences between invariance, covariance and contravariance in Scala

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https://github.com/lotusirous/functional-pearls

Pearls of Functional Algorithm Design by Richard Bird - ocaml

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https://github.com/swirrl/functional-rap

Slides for 2nd half of the talk "The world won't let you RAP and what to do about it" held at DataConnect2022

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https://github.com/sigurd4/fn_zip

Provides a zip trait for functions, allowing two functions to be combined at compile-time before being called.

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https://github.com/armadacore/fnt

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Code examples and exercises from the "Learn You a Haskell for Great Good!" book

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https://github.com/th3n0m4d/functional-programming-meetup

Basic functional programming ideas illustrated with (the awesome) Ramda library.

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https://github.com/surjoyday/functional-procedural-objectoriented-programming

Code examples illustrating different programming paradigms: Object-Oriented Programming (OOP), Procedural Programming (PP), and Functional Programming (FP).

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https://github.com/agapas/react-carousel

Image carousel made with React and TypeScript

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https://github.com/icepanorama/learning-sml

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https://github.com/tolikpylypchuk/hs-bowling

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https://github.com/iamfarrokhnejad/functional-love

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https://github.com/aajafry/custom-video

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