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: 2026-07-06 00:11:57 UTC
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https://github.com/dhruvjawalkar/ocpjavase17dev

Reference code files used during practice for newer features in Java SE 17, Lambdas, Functional Programming, Streams, Concurrency, Sealed Classes, LocalDateTime methods, Records ...

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https://github.com/robertdp/education-reports-frontend

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https://github.com/balazshevesi/yatzy

🎲 A yatzy game for the course "Introduction to programming" at LNU

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https://github.com/rxtoolkit/utils

🛠️ RxJS operators for very common data transformation tasks

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https://github.com/svozza/functionalish-refactor

A non-trivial asynchronous code example that interacts with multiple AWS services implemented in imperative, promise-based and purely functional style.

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https://github.com/rxtoolkit/socketio

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

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Advent of Code 2019

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https://github.com/thma/clean-architecture-with-functions

Clean Architecture in Haskell. Using higher order functions for 'dependency injection'

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Ports and adapter implementation of a restaurant reservation

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Traduction de la série d'articles "Thinking in Ramda" du blog de Randy Coulman

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`unless var.nil?` as a block

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https://github.com/dyalog/presentations

Presentation materials

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A functional, parallel PageRank implementation in Scala

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Compile-to-JS language built in Gleam.

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All the exercises from http://reactivex.io/learnrx/

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A minimal Result type for TypeScript.

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Lambda Calculus parser

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Training Scala 💥💥

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https://github.com/seb-bizeul/fp-flow

Collection of algebraic data types to use with Flow

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A turtle, what else?

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

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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/abdulaziz-hassan/cpu-cache-system_haskell

A successful implementation of a simplified CPU cache system in Haskell and takes advantage of the Functional Programming Paradigm

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https://github.com/web-pacotes/foundation-types

Curated package with types I believe all packages and apps need to promote safeness and reduced side effects.

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https://github.com/frantjc/go-fn

Functional stuff for Go.

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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/gribouille/json-auth-server

JSON Web token server with GraphQL API

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https://github.com/rcardin/fp-scala

My solutions to exercises of "Functional Programming in Scala".

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https://github.com/ayrtonbsouza/elixir-fundamentals-list-length-challenge

This is an application developed as a challenge for Elixir Ignite Bootcamp, proposed by RocketSeat.

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https://github.com/futurum-dev/dotnet.futurum.core.polly

Small dotnet library, allowing you to use Polly with Futurum.Core, based on the concepts behind 'Railway Oriented Programming'.

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https://github.com/wahyukmr/javascript-programming

Repository ini adalah sumber daya yang lengkap dan mendalam untuk mempelajari JavaScript dari tingkat pemula hingga tingkat lanjutan. Panduan yang mencakup semua aspek fundamental JavaScript serta konsep yang lebih kompleks.

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Mini Paypal clone, written in Rust for practicing domain modeling with clean architecture

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https://github.com/sorja/haskell-2018-ifp

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

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Attempt at encoding comonadic effects in Rust (inspired by @SheafificationOfG )

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Blackjack implemented using scala providing a tui and gui

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https://github.com/santymendez/tp-tadp-hibrido-objetos-funcional

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https://github.com/emanuelcasco/research-haskell-practise

Repositorio creado para hacer seguimiento y backup de los temas vistos sobre el paradigma funcional (en Haskell) de la materia "Paradigmas de programación" de la UTN

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https://github.com/mdb/funcy

A minimal Go package providing a few functional utilities.

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https://github.com/mathemage/fup-programming-exam

Programming exams for B4B36FUP Functional Programming

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λ | Low-level machine interpreter and compiler project, including stack management, parsing, and compiling imperative programs

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Short talk (pecha kucha style) on functional programming

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Curry: a Haskell Cookbook

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'Logical and Functional Programming' & 'Intelligent Systems' practices of courses in University of economics - Varna

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https://github.com/filiprd/monet

Online paintings retailer platform implemented in functional Scala 3

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https://github.com/hyperifyio/gnd

Gendo Lang

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https://github.com/danyst/iosfunctionaltable

Keepcoding Master Mobile Engineering Bootcamp - iOS Advanced - Functional programming exercise

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https://github.com/jwalsh/lambda-calculus-polyglot

Lambda Calculus implementations in 20+ programming languages: functional, imperative, and logic paradigms

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https://github.com/lucasamiranda/atividade-2

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https://github.com/harmim/vut-flp-labs

Funkcionální a logické programování - Cvičení

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https://github.com/wafer-li/scala-coursera

The projects of Functional Programming in Scala

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https://github.com/fblupi/grado_informatica-ntp

Prácticas de la asignatura Nuevas Tecnologías de la Programación de la UGR

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https://github.com/kanitsharma/io

Lightweight monadic abstraction to "purely" handle side effects in javascript.

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https://github.com/palutz/programmingreactivesystem_course

Code from the Programming Reactive System in Scala course from Edx (EPFL)

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https://github.com/przucidlo/serverless-todo

Feature and infrastructure complete serverless app example.

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https://github.com/neelsomani/smart-cache

A Python library that analyzes your module and automatically caches purely functional sections

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https://github.com/asarkar/fp-course-haskell

Haskell Functional Programming Course

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https://github.com/olhkyle/fxjs-verstenden

Learn fxjs based on functional-programming concept

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https://github.com/nthportal/euler-n-scala

Project Euler Solutions (in Scala)

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Tetris in pure JavaScript

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https://github.com/zlovtnik/frontend

A TypeScript/Bun/React frontend application for the Actix Web REST API backend with JWT authentication, multi-tenant support, and comprehensive functional programming patterns.

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Javascript applications with FP

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https://github.com/nathaniyell/meta-js-course

A repository with details of the different Javascript concepts learnt in Meta's Javascript course on Coursera

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https://github.com/stackbuilders/functional-programming-patterns

Code snippets used during the presentation

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https://github.com/farynaio/object-dot-notation

Simple object to object dot notation converter in Node.js.

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https://github.com/r8vnhill/dibs

Curso sobre diseño e implementación de bibliotecas de software. Incluye sistemas de construcción, testing, OOP, genéricos, programación funcional y más, con Kotlin y Docusaurus.

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Programa diseñado con programación funcional que permita determinar cuántos litros de cerveza deben agregarse entre los barriles para servir exactamente n vasos de cerveza desde cualquiera de las salidas.

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https://github.com/jumpn/utils-array

Array utilities

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

~ The pure functional Interpreter for NUMEX Language Based on Racket

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