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: 2026-07-03 00:12:07 UTC
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https://github.com/seb-bizeul/fp-flow

Collection of algebraic data types to use with Flow

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https://github.com/paudirac/cassiopeia

A turtle, what else?

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https://github.com/firaja/identicon

Elixir implementation of Identicon

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Last synced: 16 Oct 2025

https://github.com/mnikander/cpp_sequence

Sequence pipelines in C++. A functional programming-inspired approach to processing data with map, filter, reduce, and more.

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Last synced: 19 Oct 2025

https://github.com/mariomarton/racket-sudoku-solver

Sudoku solver in Racket for any board size (including hexadoku & larger), built without constraint solvers or mutations. It solves any legal puzzle and detects invalid ones.

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https://github.com/marcosh/effector

A Php library to write effect aware code.

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https://github.com/karmakaze/monadts

Fun with flatMap - Now I know My ADTs (or How to Learn Monads by Accident)

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https://github.com/mstniy/computed.dart

A performant and flexible reactive programming framework for Dart

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https://github.com/05st/project-euler

My Haskell solutions for Project Euler problems.

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https://github.com/kavalcante/array-into-subarrays

A non destructive and simple function that divide an array into multiples subarrays

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https://github.com/drag13/whendo

Small function that can be used instead if-then statement in functional style programming with JavaScript

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https://github.com/jordanblakey/ffjs

Lightweight, modular utility functions for arrays, browser, dates, strings, math, and more.

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https://github.com/mrdimosthenis/creative-elm

Drawing creation in Elm

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https://github.com/dnlowman/result-ts

A minimal Result type for TypeScript.

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https://github.com/xlisp/jim-emacs-fun-hy-lisp

Differentiable Programming: Lisp deep learning by hylang

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https://github.com/yurkimus/functions

JavaScript-oriented utilities for functional programming

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https://github.com/yurrriq/vfp-in-agda

:book: Verified Functional Programming in Agda

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https://github.com/helton/labs

:mag_right: My experiments

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https://github.com/rubada/learn-python-professionally-part-one

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https://github.com/tosun-si/bees-demo-fp

This project shows some legacy code and patterns and a refactoring for each of them with Functional Programming, lambda and functions composition

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https://github.com/foyez/fp

Functional Programming

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https://github.com/yurkimus/types

JavaScript-oriented type utilities

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https://github.com/steventimes/fpstreams

functional programming library for Python

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https://github.com/pyccel/lampy

Extension of Pyccel for functional programming

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https://github.com/rudini/node_ports_adapters

Ports and adapter implementation of a restaurant reservation

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https://github.com/kaliv0/fumus

Functional musings in Python

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https://github.com/rxtoolkit/socketio

🚰 RxJS operators for working with Socket.io (v4 or lower) servers

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https://github.com/olemb/livemidi

MIDI messages for Python

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https://github.com/tomsquest/mediathequeroubaix.py

Python CLI for the library of Roubaix (Médiathèque Roubaix)

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https://github.com/monashcoding/intro-to-haskell

Introduction to Haskell Workshop

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https://github.com/lucasbotang/made_up_programming_language

MUPL language interpreter implemented by Racket

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https://github.com/jharrilim/adventofcode2019

Advent of Code 2019

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https://github.com/abengl/ntt-project1

Primer projecto en Java para el Bootcamp Tech Girls de NTT Data Perú. Inicia el desarrollo de una aplicación para el manejo de cuentas bancarias de usuarios.

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https://github.com/joaocarvoli/scala-course

A 6-week course from École Polytechnique Fédérale de Lausanne (EPFL) about the fundamentals of scala functional programming language

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https://github.com/joao-coimbra/failcraft

Functional error handling for TypeScript — Either-based error handling with full type inference, chainable transforms, and async support

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https://github.com/ryosukedtomita/basic_algorithm_computer_science

basic algorithm example

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https://github.com/samedfft2634/qr_generator

QR generator working with API. It is a practice to improve my skills in JavaScript

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https://github.com/wislertt/functional-programming-with-python

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https://github.com/jin-sungdae/javastream

Functional Programming in Java && Stream

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https://github.com/unacorbatanegra/tie_fp

FP opinionated in Flutter & Dart

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https://github.com/zkfmapf123/go-js-utils

Using js method in golang

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https://github.com/palutz/functionalscala_coursera

Functional programming in Scala Certification path (EPFL)

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https://github.com/arieljimenez/pybanca-front

Frontend for the app pyBanca

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https://github.com/mollybeach/apetalie

Apetalie Javscript Web3 Application Function Methods Solidity

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https://github.com/bredalis/functionalprogrammingpython

💻 Programación Funcional en Python

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https://github.com/palutz/monads-gym

Stretching the muscles with monads...

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https://github.com/baransu/sugar

Experimental, fuctional language for creating webapps

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https://github.com/dsoaress/node-clean-arch-with-fp

POC of Clean Architecture with a functional programming approach

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https://github.com/maximkrouk/swift-udf-tutorial

UDF Tutorial for Swift

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https://github.com/lazywithclass/project-lamp

Source code for book content and site

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https://github.com/akabe/ocaml-js-boilerplate

A template repository for OCaml and JavaScript

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https://github.com/brettm12345/tailwind-generator

A cli for managing your tailwind setup complete with type generation. WIP

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https://github.com/alansastre/java-functional-method-reference

Programación funcional y métodos referenciados en Java

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https://github.com/tbhvishal/js-toolbox

Lightweight JavaScript utilities toolkit: helpers, snippets, and productivity tools. ESM, Node.js, TypeScript-friendly, zero dependencies. Arrays, strings, dates, async, functional programming - perfect for beginners and pros

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Last synced: 29 Apr 2026

https://github.com/mooreniemi/proc_compose

:musical_score: Proc#compose

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https://github.com/blakek/make-lookup

📒 Make a lookup object from an array of objects

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https://github.com/chicio/katas

💪🏋️‍♂️ A collection of katas I did to hone my programming skills. 🏋️‍♂️💪

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https://github.com/ramortegui/talks

Talks

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https://github.com/morganconrad/fobu

YA functional utilities for JavaScript Objects, mimicking ES6 Array methods.

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Last synced: 08 Jun 2026

https://github.com/ist-dsi/scala-designate-client

A pure functional Scala client for Openstack Designate implemented using Http4s client.

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Last synced: 09 Jun 2026

https://github.com/zhifengzhang-sz/qi-v2-qicore

QiCore v4.0 Foundation - Mathematical foundation types and core modules for modern applications

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https://github.com/zkfmapf123/express-template

node express server boiler-plate v2

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https://github.com/codingbeautydev/try-catch-fn

Intuitive functional JavaScript try-catch

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https://github.com/tejasbubane/reason-todo-old

Small todo app with reasonml

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https://github.com/singuerinc/slot-machine

fun functional-programming machine react slot xstate

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https://github.com/kerelape/monadic-objects

Collection of functions to modify objects

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Last synced: 22 Jun 2026

https://github.com/henriquelimas/sample-feed-pwa

🗞 A sample feed pwa

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Last synced: 08 May 2026

https://github.com/murat/elixir-practices

Some Elixir practices for the newbies...

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Last synced: 10 Jun 2026

https://github.com/agapas/carousel

Image carousel with indicators, made with plain JavaScript

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Last synced: 09 May 2026

https://github.com/ajitjha393/sthalit

A library that mimics the concept of lazy evaluation, a feature found in functional programming languages like Haskell.

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Last synced: 09 May 2026

https://github.com/imrafaelmerino/jio

Jio is a powerful Java library designed to simplify and enhance input/output operations by leveraging the power of expressions and functions

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Last synced: 08 Aug 2025

https://github.com/gurbaaz27/cs350a-homework-exercises

functional, lambda-calculus and object-oriented programming homework assignments

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https://github.com/dvorijs/dvori

Composable HTTP client for Node.js built to make complex queries simple.

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https://github.com/hd-genius/collection-ops

library that makes collection operations in javascript more functional

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https://github.com/pfpack/pfpack-dependency-registry

PrimeFuncPack Dependency Registry is a library for .NET providing a dependency registrar intended for registering services, including dependency trees built by PrimeFuncPack Dependency, in the .NET dependency injection mechanism.

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https://github.com/marcelo-gomj/note-share

Share notes web app.

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https://github.com/polossk/renai-slg-solution

Solution of 恋愛SLG

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https://github.com/rxtoolkit/stt-deepgram

👂 RxJS operator for realtime speech-to-text (STT/S2T) using Deepgram speeh-to-text

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Last synced: 10 Jun 2026

https://github.com/shanoaice/bethlehem

A minimal functional programming library for JavaScript.

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https://github.com/jesperancinha/jeorg-kotlin-test-drives

Kotlin studies. Includes Project Arrow, Kotlin Coroutines, Flows and More

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https://github.com/0xspringtime/catsys

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https://github.com/jasonsbarr/liszt

A prototypal object oriented language that borrows heavily from functional programming concepts and languages

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https://github.com/calvinlfer/account-experiment

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https://github.com/darky/context-fp-go

Functional programming context for Golang

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https://github.com/afsalthaj/fp-generator

The library that solves all your data generation problem !

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https://github.com/rxtoolkit/stt-ibm

👂 An RxJS operator for real-time speech-to-text (STT/S2T) streaming using the IBM Watson.

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Last synced: 18 Jun 2026

https://github.com/deepcloudlabs/dcl113-2021-sep-16

DCL-113: Functional Programming in C++17

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https://github.com/devmahmud/javascript-from-fundamentals-to-functional-js

Learn higher-order functions, closures, scope and the fundamentals necessary to use modern frameworks like React, Angular and Vue. You'll master key functional methods like map, reduce and filter ...plus promises and ES6+ asynchronous JavaScript!

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