An open API service indexing awesome lists of open source software.

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.

https://github.com/yalishanda42/scala-recsys

Scala(-ble) recommender system architecture using functional programming (PoC)

cats cats-effect functional-programming movielens recommender-system recsys scala spark

Last synced: 08 Nov 2025

https://github.com/a1exwang/wtf-interp

An functional scripting language inspired by Ruby, Elixir, CoffeeScript, Python, etc

functional-programming interpreted-programming-language language ruby wtf

Last synced: 01 Aug 2025

https://github.com/rzvxa/dwait

Deferred async operation made easy in JavaScript

async async-await await fp functional-programming javascript nodejs promise-chain rust typescript

Last synced: 09 Apr 2026

https://github.com/br1ght0ne/functional-programming-jargon.ex

Jargon from the functional programming world in simple terms! Now in Elixir!

elixir functional-programming glossary

Last synced: 08 Aug 2025

https://github.com/farbodsalimi/goulash

Goulash offers a variety of useful utility functions for everyday programming tasks by leveraging Go generics and keeping the functional programming paradigm in mind.

functional-programming generics golang

Last synced: 10 Aug 2025

https://github.com/ace411/ext-func

A simple PHP extension with additional userland helper functions.

ext-func functional-programming helper-functions php-cpp php-extension

Last synced: 04 Oct 2025

https://github.com/jaalonso/cursos_de_pf_con_haskell

Recopilación de cursos de programación funcional con Haskell.

functional-programming haskell haskell-learning

Last synced: 11 Aug 2025

https://github.com/cristianbonilla/functional-programming

A partir de la versión 8 de java la programación funcional se aplica con un estilo idiomático. Para entender la programación funcional es necesario volver a versiones anteriores.

functional-programming java-8 java-8-lambda oriented-object-programming pluralsight streams-api

Last synced: 12 Aug 2025

https://github.com/phreppo/parallellisp

Lisp, but functional and parallel

functional-programming lisp parallel

Last synced: 04 Oct 2025

https://github.com/stagfoo/joro

🕷️🕸️ Load dom nodes and strings like dependencies with no duplicates

css css-framework frontend functional-programming javascript jss template-literals

Last synced: 10 Apr 2026

https://github.com/oliverjash/fun-task-fetch

fetch API implemented using the Task type, which allows cancellation amongst other things.

fetch fetch-api functional-programming task

Last synced: 20 Aug 2025

https://github.com/sdaves/simplemonads

Easy to use monads (containers), with pattern matching, that improve the quality of your python code. Use Just to end checking for None, Success to end unhandled exceptions, Future for async, and Reader for dependencies.

dependency-injection fp functional-programming futures monads python reader unhandled-exceptions

Last synced: 22 Aug 2025

https://github.com/giu7d/doka-lang

DOKA Functional Programming Language

compiler functional-programming programming-language

Last synced: 22 Aug 2025

https://github.com/elixircl/kombucha

🍹Kombucha: A Programming Language with Probiotics

elixir functional functional-programming kombucha language programming

Last synced: 26 Feb 2025

https://github.com/itwillwork/function-logger

Awesome tool for FP JS. Logging of the input and output arguments of the function on each call.

debugging-tool frontend functional-programming javascript

Last synced: 14 May 2025

https://github.com/timdeputter/FitEx

FitEx is a Macro-Module which provides a bit of sugar for function definitions.

elixir elixir-lang functional-programming macros

Last synced: 30 Mar 2025

https://github.com/gregorykogan/result

result is a C++ library that provides a Result type, which can be used to return and propagate errors. It's inspired by Rust's Result type.

auto-documentation cpp doxygen doxygen-documentation doxygen-theme error-handling functional-programming modern-cpp result-type

Last synced: 15 May 2025

https://github.com/felixarpa/LP-Haskell

🎓 Haskell problems of Programming Languages (FIB)

fib functional-programming haskell

Last synced: 14 Mar 2025

https://github.com/blakek/compose

🛠 Compose functions and promises

functional-programming functions pipeline promise

Last synced: 12 Nov 2025

https://github.com/tebogoyungmercykay/programming-languages-coding-booth

Chris Hanson and the MIT Scheme Team. MIT/GNU Scheme reference manual. Technical report, Mas- sachusetts Institute of Technology, 2018.

cobol fortran functional-programming imperative-programming-language imperative-scripting-languages languages logic-programming object-oriented-programming programmin racket ruby scheme

Last synced: 14 Mar 2025

https://github.com/systemfsoftware/essentials

Essential TypeScript libraries and utilities for building production-ready AI SaaS applications

ai apify aws cloud-native developer-tools effect-ts functional-programming monorepo neon-database nodejs pnpm saas serverless typescript utilities

Last synced: 13 Apr 2025

https://github.com/guillaumearm/redux-fun

:wrench: - Redux functional programming utilities

fp functional-programming handler middleware reducer redux selector updater

Last synced: 02 May 2026

https://github.com/thesephist/ittr

Small library of iterator-related utility functions for JavaScript

functional-programming iterator nodejs

Last synced: 26 Dec 2025

https://github.com/nextbreakpoint/common

Common is a library which implements useful types for writing code in an elegant and concise style

fluent-api functional-programming java java-library

Last synced: 26 May 2026

https://github.com/milmazz/func_geo_slides

Functional Geometry Description of Escher’s Fish (slides)

escher functional-programming geometry

Last synced: 03 Jan 2026

https://github.com/oliverjash/simple-maybe

Simple helper functions (map, filter, flatMap, getOrElse, etc.) for transforming T | undefined types (Maybe<T>).

functional-programming maybe option typescript

Last synced: 06 Mar 2025

https://github.com/hablapps/naturally

Programming in a tagless-final style, naturally

dependency-injection functional-programming natural-transformation scala typeclasses

Last synced: 30 Jun 2025

https://github.com/jaandrle/deka-dom-el

A library expanding the capabilities of the native DOM API with the aim of offering the possibility of writing reactive UI templates/components declaratively directly in JavaScript.

client-side-rendering declarative declarative-programming declarative-ui dom functional-programming javascript reactive reactive-programming rendering server-side-rendering signals signals-library typescript ui ui-components vanilla-javascript vanilla-js webcomponents

Last synced: 27 Jul 2025

https://github.com/astuanax/fun

Functional javascript library

either-monad functional-programming javascript maybe-monad

Last synced: 21 Feb 2026

https://github.com/emptywork/functional-programming

General purpose repository for learning purely-function languages.

functional functional-programming general-purpose haskell haskell-learning purely-functional purescript

Last synced: 18 Jun 2026

https://github.com/marcinzh/beam

Streams using Algebraic Effects and Handlers

algebraic-effects functional-programming scala stream

Last synced: 10 Mar 2026

https://github.com/hablapps/geofences

A proof-of-concept application to show the principles of purely functional programming

cats doobie functional-programming http4s scala scalaz typeclasses

Last synced: 30 Jun 2025

https://github.com/ajitjha393/js-transducers

The Functional transducers that allow transformations with improved performance

compose functional-programming transducers

Last synced: 01 Sep 2025

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

Microscopic functional programming context for TypeScript

context dependency di fp functional functional-programming injection javascript js programming ts typescript

Last synced: 01 May 2025

https://github.com/bkosm/kpipe

A kotlin-native library introducing a functional-style pipe.

functional-programming kotlin pipe

Last synced: 30 Jun 2025

https://github.com/szymon-budziak/functional_programming_course_agh

Solutions from Functional programming course at AGH UST. If you use it and it helped you please leave a star ⭐

functional-programming haskell

Last synced: 16 May 2026

https://github.com/stijnmoreels/fsharp.akkling.actorr

Extra Actor functionality on top of the existing Akkling repository to create an Actor pipeline with ease.

actor-pipeline actors akkling fsharp functional-programming pipeline reactive reactive-programming

Last synced: 15 Mar 2025

https://github.com/divertimentos/course-elixir-freecodecamp

Elixir + Functional Programming fundamentals course, aimed for beginners. Provided by Octallium (Anil Kulkarni) through freeCodeCamp.org

elixir elixir-lang functional-programming learn-in-public octallium

Last synced: 15 Jul 2025

https://github.com/zahidul-islam/ts-fun

Implementing lodash library in typescript for fun :-)

chai fun functional-programming lodash mocha typescript

Last synced: 17 Sep 2025

https://github.com/rvanasa/lens

An easy-to-learn functional scripting language and runtime environment.

functional-programming javascript modular-design programming-language script

Last synced: 10 Jun 2026

https://github.com/skarab42/result

Provides a robust and type-safe way to handle success and failure outcomes in TypeScript, utilizing symbolic indexing for clear result differentiation.

error-handling functional-programming typescript

Last synced: 24 Jul 2025

https://github.com/phenax/redux-utils

Utility functions and patterns to work with redux

functional-programming react reducer redux saga

Last synced: 11 Apr 2026

https://github.com/rodrigoalvesvieira/if686

Documents, assignments and code from the Computational Languages Paradigms course at CIn/UFPE, in the semester of 2015.1.

cin-ufpe computational-languages-paradigms functional-programming haskell if686 ufpe

Last synced: 03 Aug 2025

https://github.com/dinataklit/mars-dashbord-functional-programming-intermediate-javascript-nanodegree-program

The functional JavaScript course project will be to build a dashboard for the past and current **NASA Mars rovers**, information about each mission, and images from their excursions. You will be tasked with using all the ES6 syntax and functional programming concepts from the course to interact with a real NASA API and build the front-end logic to create the dashboard.

functional-programming javascript

Last synced: 13 Jul 2025

https://github.com/sanwed/nonograms

Популярная игра Нонограмы с возможностью добавления уровней

css functional-programming nonograms vanilla-javascript

Last synced: 20 Apr 2026

https://github.com/devkcud/salvation

💀 A generic Go wrapper for optional values, inspired by Rust's Option and Haskell's Maybe. Brings Possibly[T] to your codebase for safe, expressive nothingness.

functional-programming generics golang maybe monads-but-shhh nullable option zero-values

Last synced: 13 Jul 2025

https://github.com/unisay/moki

Moki is a tool that provides and manages test services like mock http server, database, FS folder, etc.

functional-programming integration-testing scala

Last synced: 11 Sep 2025

https://github.com/pschichtel/adventofcode-solutions

Solutions for http://adventofcode.com/ 2015 (implemented in functional Scala)

advent-of-code functional-programming scala

Last synced: 18 Mar 2025

https://github.com/codecop/fizzbuzz-with-nothing-kata

Exercise to practice working with functions.

exercise functional-programming kata lambda-calculus

Last synced: 24 Jul 2025

https://github.com/tinyj/tinyj-lazy

A thread and exception safe implementation of lazy (aka on-demand) value initialization.

functional functional-programming java lazy lazy-evaluation threadsafe tinyj

Last synced: 11 Jan 2026

https://github.com/leostera/alonzo.js

Minimalistic Lambda Calculus Built with const and arrow functions

functional-js functional-programming javascript lambda lambda-calculus

Last synced: 01 Nov 2025

https://github.com/tonivade/commitconf-25

código fuente de los ejemplos usados en la charla que presenté en la #commitconf

commitconf dsl functional-programming java

Last synced: 23 May 2026

https://github.com/megabytesofrem/learn-haskell

Personal notes/repo to learn Haskell. 3rd time is the charm

functional-programming haskell learn learn-haskell

Last synced: 30 Mar 2025

https://github.com/psygo/haskell_lab

An environment for accelerated learning of Haskell.

functional-programming haskell lab

Last synced: 19 May 2026

https://github.com/zhb2000/maybe-extension

Functional interfaces and useful extension methods for "Maybe types" in C++ (e.g., std::optional, pointers, and smart pointers).

c-plus-plus cplusplus cpp functional-programming

Last synced: 15 Apr 2025

https://github.com/valtermro/tolb

A light and fast set of javascript utility functions

functional-programming javascript modules utilities

Last synced: 16 Jan 2026

https://github.com/therealklanni/key-mapper

Tiny utility for deeply mapping object keys

functional-programming object object-mapper object-mapping tiny-utility

Last synced: 13 Mar 2025

https://github.com/marcuwynu23/sclib

Cpp dynamic library project for easy console programming

console console-project cpp dynamic functional-programming functions library

Last synced: 14 May 2025

https://github.com/henriquecbuss/ipe-compiler

A compiler for the Ipe language, as an Elm package

compiler elm functional-programming programming-language

Last synced: 05 Aug 2025

https://github.com/weaming/math-fold

Bring fold in functional programming to CLI.

cli fold functional-programming

Last synced: 24 Jun 2025

https://github.com/lebrancconvas/hackerrank-functional-programming

Programming in Functional Programming by using Hackerrank Problem.

clojure elixir erlang fsharp functional-programming hackerrank haskell lisp ocaml racket scala

Last synced: 07 Apr 2026

https://github.com/mishankov/tipe

🐍 Typed pipes

functional-programming pipe python

Last synced: 20 Aug 2025

https://github.com/dominicluidold/ws21-conceptshigherprogramminglanguages

A collection of mandatory exercises in "Concepts of Higher Programming Languages" - 1st semester master @ Vorarlberg University of Applied Sciences (FHV)

fhv functional-programming haskell java

Last synced: 17 May 2026

https://github.com/darky/klubok

Do notation pipes for Promise-based or pure functions which easy to mock

do-notation functional-programming javascript mock pipe promise typescript unit-testing

Last synced: 27 Aug 2025

https://github.com/el3um4s/match

Alternative to JavaScript’s switch statement with a functional twist

functional-programming javascript js npm npm-package switch switch-case ts typescript

Last synced: 10 Apr 2026

https://github.com/sagnikc395/parso

parser combinator in python

functional-programming parser-combinator

Last synced: 04 Sep 2025

https://github.com/akin-mustapha/glitch-art

A command line tool that corrupt the binary data of an image file to create a glitch

functional-programming glitch-art haskell haskell-learning programming programming-languages

Last synced: 11 May 2025

https://github.com/krishnagopinath/separationlogic

a system that helps formally verify the correctness of concurrent programs, integrated into a toy programming language called Imp.

coq functional-programming

Last synced: 23 Mar 2025

https://github.com/spamegg1/spamegg1-lean

Working through Functional Programming in Lean

dependent-types formal-verification functional-programming lean lean4 math proofs

Last synced: 02 Jan 2026

https://github.com/coderaiser/apart

partial function application

functional-programming javascript nodejs

Last synced: 10 Mar 2026