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/xsismadn3ss/basic_exercises_gleam

Ejercicios básicos para aprender conceptos de Gleam

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Last synced: 27 Jun 2026

https://github.com/rajasegar/effpy

My own Functional Programming utilities in Javascript

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https://github.com/shaanbanday/me-101-c-plus-plus

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https://github.com/tmartins11/progfuncional

Repositório para armazenar todos os projetos desenvolvidos na disciplina de Programação Funcional - BCC | UNIFAL.

functional-programming haskell

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https://github.com/turbaszek/haskell-labs

Notes from lectures and Haskell code from labs.

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https://github.com/viralpraxis/purist

Automatic runtime impure ruby methods invocation detection

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https://github.com/suddi/knightwatcherbot

Bot API for customized Telegram alerts, developed for AWS Lambda and API Gateway (https://bot.suddi.io)

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https://github.com/ashr123/exceptional-functions

A collection of functions that protect against unchecked Exceptions

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https://github.com/davidgfolch/schibstedwebapptest

Schibsted Webapp Test with com.sun.net.httpserver

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https://github.com/programadorthi/the-joy-of-kotlin

The Joy of Kotlin book exercises

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https://github.com/nikdon/15puzzle

Purely functional 15 puzzle

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https://github.com/asarkar/99-scala

S-99: Ninety-Nine Scala Problems

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https://github.com/ejgallego/imp-lab

Lean playground for programming language modeling tooling.

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https://github.com/kyminbb/it

Iterator building blocks for Go, based on Go 1.23+ iterators

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https://github.com/denisshevchenko/pyerevan2019

Presentation for PYerevan meetup 2019

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Practical challenging cases involved with algorithm, functional programming and interviews implemented with JavaScript

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Rewritten React router library [functional principles].

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https://github.com/chihaya-yuka/hackchat-haskell-bot

Hack.Chat's functional bot.

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https://github.com/dirtsimple/fun-factory

Fluently (and efficiently) compose PHP functions, methods, and lambda-expression strings

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https://github.com/brettm12345/spatulafoods-product-tabs

A dire flow component for displaying product nutritional info, ingredients and cooking instructions on Spatula Foods

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https://github.com/matthewstyler/chain_lua

A small simple functional programming library for Lua

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https://github.com/palutz/fplogic

Logic and functional programming in Haskell

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https://github.com/francisbarton/adventofcode_2023

Built using Ella Kaye's template for an AoC website

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https://github.com/jcaromiq/functional-programming-in-java

Functional programming in Java (https://pragprog.com/book/vsjava8/functional-programming-in-java) book practices

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https://github.com/robertdp/engineering-test-api

Minimalistic API made for an engineering test

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https://github.com/mtumilowicz/scala-optics-monocle-quicklens-workshop

Introduction to Optics (Lenses, Prisms etc) in Scala.

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https://github.com/rolandtritsch/kotlin-aoc-2017

Porting scala-aoc-2017 to kotlin (to learn the language)

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https://github.com/mattpolzin/mayberequired

This library introduces the Required and MaybeRequired types as companions to the built-in Optional type

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https://github.com/santiagolizardo/tonato

Converts strings to the NATO alphabet (Haskell)

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https://github.com/samuellucas97/haskell-exercises

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https://github.com/fr33m0nk/functional-programming-with-fp-ts

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https://github.com/john-science/sicp-racket

Working through the SICP Textbook in Racket Scheme

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https://github.com/inblack67/elixir-fundamentals---udemy-course

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https://github.com/bharatlal124/alarm_clock_project

This is a simple Project on Alarm Clock : )

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https://github.com/jaandrle/jaajsu

JavaScript Utils

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https://github.com/snowdutra/python_funcional

Aqui você vai encontrar todos os meus projetos em programação funcional em Python em andamento e concluídos. 😊

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https://github.com/jiriklepl/cpp-turing-machine-in-templates

C++ turing machine in templates

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https://github.com/olegalexander/oa-utils

Statically typed Python utilities for functional programming.

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https://github.com/yoyolicoris/qmul-ecs713-fp-final

My individual coursework of the module ECS713P Functional Programming, QMUL.

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https://github.com/mrbrunelli/my-first-elm-app

My Fist App using Elm Lang

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https://github.com/devkiloton/java-ft

Code used in my workshop at UNICAMP university to show the benefits of the functional programming on Java, and compare imperative & declarative code.

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https://github.com/gabrielgiussi/scala-cats

Exercises from Scala with Cats

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https://github.com/bramirez96/functional-state-no-react-exploration

An exploration into persisting state in a functional programming environment, and how one might implement a simple state-driven rendering engine like React with low overhead and specifically defined "hook" subscriptions. Also includes a custom webpack setup that allows for some really clean project architecture and reduced bundle size.

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https://github.com/heitorgandolfi/elm-todo-list

Simple ToDo list application built in Elm for study purposes

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https://github.com/bk408/unlocking-the-power-of-javascript

This repo represents the topics and Unlocking the Power of JavaScript.

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https://github.com/stevenchen3/ragdoll

Learning Typelevel's Cats library

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https://github.com/tomiok/rosetta

Library with many utility methods.

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https://github.com/tr-yasuda/kitsunejs

Type-safe Result and Option utilities for TypeScript, inspired by Rust. Safer error handling with a lightweight functional style.

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https://github.com/zavvdev/js-utils

Collection of JS utility functions

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https://github.com/quacksouls/haskyll

Beginner's guide to Haskell

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https://github.com/wdalmut/kata-example-3

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https://github.com/umesh-timalsina/ts-monads

Monads Playground in TypeScript

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https://github.com/bmmunga/BrainCaml

An OCaml-based interpreter for the Brainf*ck esoteric programming language.

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https://github.com/pjiwm/functional-rust

A Rust library for functional programming, providing function composition, currying, and higher-order functions. This crate can be compiled on nightly Rust.

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https://github.com/catseye/deturgenchry

MIRROR of https://codeberg.org/catseye/Deturgenchry : An OO language where `self` is a continuation (sort of)

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https://github.com/kattulib/katip

[IN DEVELOPMENT] Katip is a minimal functional logger library

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https://github.com/TheAlexLichter/fp-in-php

A talk about functional programming in PHP

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https://github.com/endou-mame/php-monad

📦 Implemented the concept of monads in functional programming in PHP.

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https://github.com/catseye/sally

MIRROR of https://codeberg.org/catseye/Sally : A cute but naïve functional language - "upside-down Forth cake".

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https://github.com/github-dev12345/dom-manipulation-crud-operation-app

Finally i make a CRUD-Operation APP,😉😎 with the help of JavaScript, To learn the CRUD System ( Create, Read, Update, Delete), )

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https://github.com/hfagerlund/hey-haskell

An introduction to Haskell

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https://github.com/jottenlips/functionalobjc

λ Example project for using higher order functions in objective c

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https://github.com/petetnt/advent-of-code-2017-reasonml

Advent of Code 2017 with ReasonML

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https://github.com/delonnewman/hash_delegator

Thread-safe immutable objects that provide delegation and basic validation to hashes.

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https://github.com/salespaulo/poc-refactory

Refactoing code using Lambdas, Funtional Programming and Java 8.

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https://github.com/asarkar/scala-with-cats

Scala with Cats

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https://github.com/delonnewman/multiple-dispatch

An implementation of multiple dispatch for Ruby. Also known as generic-functions or multi-methods.

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https://github.com/delonnewman/monad-maybe

A Ruby implementation of Haskell's Maybe Monad

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https://github.com/delonnewman/gen-test

Generative or property based testing for Ruby

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https://github.com/banghuazhao/swift-super-tiny-compiler

Swift implementation of The Super Tiny Compiler - transforms LISP syntax to Swift function calls

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https://github.com/cryptocraigo/programming-for-kids

🚀 Explore programming with this guide for kids. Discover languages like Python and JavaScript, and start your journey in IT careers today.

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https://github.com/mhenderson/squarelimit

Escher's Square Limit in R with funcgeo.

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https://github.com/powerunit/powerunit-extensions-exceptions

Objects to support checked exception in lambda

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https://github.com/separatrixxx/fp_labs_6_sem

👓 Laboratory work for the 6th semester of MAI on functional programming

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https://github.com/zyzbroker/elm-revisit

Explain ELM architecture and its selling point and weakness

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https://github.com/adversing/monoid.scala

Scala-based Haskell monoid implementation

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https://github.com/exbotanical/goldmund-sh-ii

Personal website :: Vue 3 | Go | Postgres | GraphQL

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https://github.com/isaacvando/functionalprogrammingsig

Resources for MCA Functional Programming SIG including Haskell Jupyter notebooks

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https://github.com/james-p-d/lambda

A simple Lambda expression interpreter in Java

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Prolog parser, lexer and interpreter in Ocaml

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https://github.com/mpellouin/wolfram

Epitech second year project part of the functional programming module. Wolfram is an implementation of elementary cellular automaton written in Haskell

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

Rewritten React redux library [functional principles].

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https://github.com/boogieman2k/viper-ios-tutorial

This is a first review of VIPER Architecture on iOS using swift 4

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https://github.com/mahmud035/courses-by-colt-steele

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Functional programming in JS - talk assets

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https://github.com/jackdbd/pegthing

My implementation of the Peg Thing game in Clojure for the Brave and True

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https://github.com/mryossu/fallibledemo

A better way of handling exceptions in C# applications

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https://github.com/htet-ahkar/functional-programming-web-village-voyage-

Tutorial Series From (https://www.youtube.com/@webvv)

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https://github.com/sinkaszab/limbda

Functional programming helper library.

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https://github.com/alanvivona/code-samples

Playground repository containing examples, snippets & experiments: CycleJS, RxJS, ReactJS, NodeJS, MongoDB, D3, functional programming, machine learning, Python, etc.D

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