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: 2026-06-23 00:11:56 UTC
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https://github.com/daggerok/functional-and-reactive-principles-in-scala

Never too late! My learning process for 'Functional Programming Principles in Scala' and 'Principles of Reactive Programming in Scala' courses!

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https://github.com/denisdubochevalier/lambdac

WIP: Untyped lambda calculus compiler

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https://github.com/denisdubochevalier/monad

Implementation of monads in go with generics

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https://github.com/sae0-3/umss

Ingenieria en Informatica - UMSS

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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/biancodavide3/ultimate-java

The Ultimate Java Series of Courses from CodeWithMosh, from beginner to advanced topics

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https://github.com/rcardin/cats-effect-playground

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https://github.com/dboyliao/learnhaskell

Notes and codes for learning Haskell.

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https://github.com/therealkoedev/railway-results

Monads for easy and compact error handling with Railway Oriented Programming.

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https://github.com/filipondios/something

something functional

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https://github.com/kevindasilvas/comments-kanban

Haskell microservice to add comments to a task in mini kanban project

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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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A library which calculates a bowling score, written in F#

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https://github.com/zeucxb/alura-functional-js

Curso de javascript funcional da Alura.

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https://github.com/mrbrunelli/curso-elixir

Meus estudos da Linguagem Elixir

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

These are practice projects on JavaScript Object Oriented Programming

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https://github.com/wdalmut/curry

An example of currying and partial application

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Functional Programming - University Coursework/Homework

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Programa Discover da Rocketseat

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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/ryanhill1/command-line-checkers

Checkers with AI.

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

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https://github.com/zalbia/learning-eff

Learning eff

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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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https://github.com/rafaelvicio/pokedex-rxjs

Pokedex. Projeto utilizado para aprendizado de RxJS(Programação Funcional)

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https://github.com/phantie/pipe-forward

A tiny functional composition utility for Python. It allows you to create pipelines of functions using the | operator. Similar to |> (pipe forward) operator in F#.

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https://github.com/garyhilares/minesweeper

Simple Minesweeper game written in ISL with lambdas (a functional programming variant of Racket).

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https://github.com/bilal-fazlani/gossip-glomers-scala-template

Solutions for Gossip Glomers Challenges in Scala using ZIO-Maelstrom

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https://github.com/sgon4arov/plato

🤖 Enhance coding with Plato, a CLI-compatible AI assistant that streamlines coding tasks while integrating seamlessly with GitHub Copilot.

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https://github.com/dashkite/joy

The simplicity of Lodash with the functional flair of Rambda.

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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/alinpahontu2912/racket-supermarket

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https://github.com/mavaji/ke2019

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https://github.com/it1shka/moonshine

Library providing common functional utilities for the Lua programming language. Development of the library is currently frozen

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https://github.com/nkcoder/bondi

Scala scripts with functional programming in Scala 3 (Cats Effect, ZIO, Skunk etc.)

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https://github.com/paulpdaniels/streamish

A simple Functional Reactive Streaming library

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https://github.com/isaac-alencar/turing_machine_simulation

Turin Machine simulation to add one bit to a binary number

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https://github.com/kathleenwest/advancedconsoleapplicationi

This is a very simple windows console application that I completed for a class assignment. It is shown here to illustrate my coding style, structure, and commenting. This example is considered Level 3 – Advanced. Objectives: Events Functional Programming Custom EventArgs IList<> Interface Indexer Delegates Anonymous Methods Event Handlers

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Sequential code and chained execution of events, handlers, etc.

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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/sidmishraw/gunc

Golang functional programming library

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https://github.com/GrahamStrickland/functional_lean

Examples and exercises from "Functional Programming in Lean" - David Thrane Christiansen

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https://github.com/pixcai/hscheme

Write Yourself a Scheme in 48 Hours

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https://github.com/darren277/lisp-music-gen

A very basic melody generation tool written in Lisp. There is also Postgres interactivity.

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Slides for Typed FP in TS

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https://github.com/kubepay/java-cs-to-enterprise

This repository acts as standalone or upcoming book for educating interested Computer Science students to Data Structures, Algoritms, Design Pattersn on Java 8.

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

A practical functional library for Python Lovers.

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https://github.com/sarthakmakhija/joy-of-kotlin

Repository containing solutions for problems in "Joy of Kotlin" book

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https://github.com/nshkrdotcom/elixir_dashboard

A Phoenix LiveView performance monitoring dashboard for tracking slow endpoints and database queries

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https://github.com/rcardin/doobie-playground

Examples of some use cases of the doobie library

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Solutions to the exercises proposed during the courses on RockTheJvm site

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A simple, interactive spreadsheet web application built using HTML, CSS, and JavaScript. This app allows users to create, modify, and organize data in a grid-like format, mimicking a basic spreadsheet interface.

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https://github.com/rjdestigter/rxjs-single-state-todomvc

Experimental serliazable, time-travelable single state solution using RxJS observables

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https://github.com/rcardin/raise4s

Porting of the Raise DSL from the Arrow Kt Kotlin library

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Single Page Application with Elm Architecture

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https://github.com/mahi97/numex-lang

~ The pure functional Interpreter for NUMEX Language Based on Racket

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https://github.com/aahaidaralbaqir/identicon

Github default profile image generator written in elixir

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https://github.com/sharpmiind/erlang-1em

🛠️ Develop and test Erlang applications effortlessly with erlang-1em, simplifying deployment and enhancing productivity for developers.

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https://github.com/jvz/musigma.blog

A blog about programming.

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https://github.com/aneeshlalwani/spreadsheet-javascript

A spreadsheet application, features parsing and evaluating mathematical expressions, implementing spreadsheet functions, handling cell references, and creating interactive web interfaces with dynamic updates.

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https://github.com/martinfrancois/java-optionals-skill

Help AI coding agents use Java Optional well in new code and cleanup, without replacing one antipattern with another.

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https://github.com/mariankapisinsky/FIT-VUT-NNET

Some of the school assignments from my master's degree study.

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A Clojure webhook handler for processing and validating payment events with SQLite persistence and HTTP callbacks for confirmation/cancellation.

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https://github.com/pkarpovich/functional-programming-labs

BSTU Functional Programming Labs

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https://github.com/corporatepiyush/clj

Clojure examples and tutorial

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https://github.com/attack-monkey/react-fn

A simple, functional approach to React

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https://github.com/amdjadouxx/pushswap-checker

A project to check your best pushswap instructions

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Advent of Code solutions in Elixir.

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Refactoring Legacy Code using FP

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https://github.com/pfpack/pfpack-core-func

PrimeFuncPack Core.Func is a core library set for .NET consisting of functional interfaces (SAM interfaces) and the extensions targeted for use in functional programming. There are both asynchronous (Task and ValueTask based) and synchronous interfaces and the extensions in the set - IAsyncFunc/IAsyncValueFunc and IFunc.

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Last synced: 09 May 2026

https://github.com/markehost/javascript-exercises

Coding exercises in JavaScript.

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https://github.com/takayuki-y5991/pipeline-ts

A minimal library that provides a functional pipeline mechanism in typescript

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https://github.com/dtsaryov/csc-haskell-fp

The repository contains lecture notes and practical task implementations from FP with Haskell course

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https://github.com/grihabor/gush

Functional go library to make function composition simple

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Functional Programming - University Coursework/Homework

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https://github.com/amaziahub/tunic

A minimal setup for a Kotlin application using Gradle

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Elixir workshop for Lambdup conference

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An functional programming language-based shooting arcade game

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https://github.com/papilo-cloud/pony-express

A simple mail server that stores emails and users. This behaves more like a conventional JSON backend API

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App that allows you to view information about alcohol of the world - Type in and find a country or city from the search bar and see all the drinks from there.

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https://github.com/hoetty/marble

A simple and compact functional programming language

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Explicit success/failure modeling for Kotlin using a Result monad. Favors explicit control flow and predictable error handling over exceptions.

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https://github.com/bryik/trampolining-beyond-the-call-stack

Exploring a technique used to optimize recursive functions.

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https://github.com/fabriziomettini/dsa-ii

Resources about my DS&A II course (FCEIA - UNR)

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https://github.com/414owen/life-hs

Conway's Game of Life in Haskell

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Assertion helper for regular functions with wrapper for monads

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https://github.com/chrismichaelps/computer-science-problem-solving

Learning haskell Language solving computer science programming problem. This implies having a better knowledge about how language works and how to understand better how functional languages work.

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