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/sorja/haskell-2018-ifp

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

functional-programming haskell stack

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https://github.com/youstinus/toolsgo

Tools with utilities, transformers, generators and other useful functions.

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https://github.com/stuartdaniells/portfolio-website

React

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https://github.com/wking-io/lemonade

Composable AJAX requests that return a Future Data Type

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simple, lightweight, actor-based distributed blockchain

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https://github.com/saber2pr/fp

:heavy_minus_sign: A library for Javascript in functional programing in async | sync | lazy.

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https://github.com/tralahm/scala-by-example

Scala is a tastefully typed language: it is statically typed, but explicit types appear in just the right places. Scala takes powerful features from object-oriented and functional languages, and combines them with a few novel ideas in a beautifully coherent whole. The syntax is so lightweight, and its primitives so expressive, that APIs can be used with virtually no syntactic overhead at all. Examples can be found in standard libraries such as parser combinators and actors. In this sense Scala supports embedded domain-specific languages.

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https://github.com/sachdevavaibhav/js-fundamentals

JavaScript Fundamentals (Notes) ft. Namaste JavaScript

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Monads implementation by @rolangom

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TypeScript essentials for explicit error and absence handling - Option, Result, typed Exceptions and optional Callbacks the compiler actually enforces.

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NPM string formatting module for string beautification (https://www.npmjs.com/package/string-formatting)

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Created a Keeper App using React in which we can add our notes.

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Functional Programing constructs for Go.

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https://github.com/tolikpylypchuk/fsbowling

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

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https://github.com/oelin/chime

A tiny, declarative UI library.

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Meus estudos da Linguagem Elixir

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https://github.com/juop12/exactas-plp-cnil

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https://github.com/vitorribe/erlang_paradigmas

Repositório para atividades relacionadas ao paradigma funcional com o uso da linguagem Erlang.

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https://github.com/wdalmut/curry

An example of currying and partial application

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https://github.com/anvell/result-extensions

Additional extensions and imperative bindings for Kotlin's 'Result' type

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https://github.com/plave0/pp

Programming paradigms course material.

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https://github.com/johnanon9771/concepts-fundamentals

Repository for experiments :smile:

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Emacs mode for editing https://github.com/Aearnus/charm files.

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Type-safe policy DSL in Haskell. Algebraic data type Policy = Allow | Deny | When; predicates compose via And/Or/Not; pure total evaluator; Aeson JSON codec; Hspec + QuickCheck tests. Functional purity flex for the agent-governance theme.

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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/garyhilares/minesweeper

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

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

Pearls of Functional Algorithm Design by Richard Bird - ocaml

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Java functional programming implementations

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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/stephenombuya/spreadsheetapplication

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/mdw-go/funcy

Functional programming toolkit for Go

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https://github.com/sevmardi/functional-design-in-java

Functional design in Java

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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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My learning path to be a Backend Developer (Spring Boot)

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Ingenieria en Informatica - UMSS

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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/ignaciopieroni/functional-programming

We want to process a set of organizations from different industries to perform various queries about them using concepts from the functional paradigm. For each organization we know its name, website and other important fields. The main goal is to focus on modeling the data types and writing the necessary functions to perform the required analysis.

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https://github.com/deepcloudlabs/dcl113-2023-aug-14

DCL-113: Functional Programming in C++20

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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/filipondios/something

something functional

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https://github.com/sidmishraw/gunc

Golang functional programming library

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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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https://github.com/lucashnss/if686-programming-languages-paradigms-functional

This repository is for lists, exercises, data structures and more in the programming-languages-paradigms course (IF686) in CIN-UFPE learning Haskell, a function language.

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https://github.com/pixcai/hscheme

Write Yourself a Scheme in 48 Hours

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

Curso de javascript funcional da Alura.

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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/milaziabchenko/minimo-website

Stylish photodiary | lifestyle | travel multi-page website created with modern features of HTML5, CSS3, and JavaScript, combining functional programming and OOP approaches

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https://github.com/moonfloof/CMP6090

Functional Programming - University Coursework/Homework

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https://github.com/jferard/yamft

YAMFT (Yet another `more-functools`) is another functional library for Python

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https://github.com/kiwamizamurai/miso-numeron

A Bulls and Cows number guessing game built with Haskell and Miso framework, compiled to WebAssembly

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https://github.com/otbivnoe/haskell-time

Functional programming seems really interesting. Change your imperative mind and take over the world!

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https://github.com/alvarogarcia7/numerology-kata-java

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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/nkcoder/bondi

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

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https://github.com/faylina/spellbound-treasures

First project utilizing JavaScript to create a shopping cart

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https://github.com/micheld-dev/les-petits-plats

Site de recettes de cuisine - OC Projet 7

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https://github.com/doughtnerd/qwizard

A forms-building library

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https://github.com/paulpdaniels/streamish

A simple Functional Reactive Streaming library

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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/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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https://github.com/denieler/angular-sequence-events

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

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https://github.com/jack994/lambdacalculus_in_sml

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

Homework repo for functional programming

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

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A pragmatic library for sequential async operations with first-class error handling.

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https://github.com/i-walker/fp-ts-slides

Slides for Typed FP in TS

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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/noor188/space-invaders

The design of the classic arcade game space invaders

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

A practical functional library for Python Lovers.

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

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BSTU Functional Programming Labs

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Utility for working with streams (iterables).

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~ The pure functional Interpreter for NUMEX Language Based on Racket

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https://github.com/imdarshangk/functions

This repository contains various Python programs that demonstrate the use of functions with and without return values and arguments. The programs cover different mathematical operations and concepts.

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