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: 2026-03-25 00:11:56 UTC
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https://github.com/suddi/node-object-to-object-mapper

NPM module to perform object to object mapping using reusable, composable filter functions (https://www.npmjs.com/package/object-to-object-mapper)

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https://github.com/seakayone/vavr-learning

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https://github.com/skykanin/effects

An effects system based on freer monads in Idris

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https://github.com/fathisiddiqi/objek

Manipulate your object with simple functions

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https://github.com/bsgbryan/madul

Mädūl is the fun way to write functional code in TypeScript!

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https://github.com/bertrand31/exercicesalgo

💡 Collection of algorithmic exercises taken for fun from various sources

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https://github.com/v-spassky/drainage

🚿 Implementation of pipe expressions for Python.

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https://github.com/jonaskromer/blackjack

Blackjack implemented using scala providing a tui and gui

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Exercises for Functional Programming in Scala

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Persistent array data structure in JS

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Reactive programming for UI (ReactJS mostly)

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

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https://github.com/ghurtchu/wc

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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/aditya-k93/fpinscala

Functional programming in Scala

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

A blog about programming.

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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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https://github.com/youstinus/toolsgo

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

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

Composable AJAX requests that return a Future Data Type

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

~ The pure functional Interpreter for NUMEX Language Based on Racket

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https://github.com/rcardin/raise-scala-example

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https://github.com/rcardin/raise4s

Porting of the Raise DSL from the Arrow Kt Kotlin library

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https://github.com/blutorange/js-elbe

Utility for working with streams (iterables).

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https://github.com/rcardin/rockthejvm-exercises

Solutions to the exercises proposed during the courses on RockTheJvm site

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

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trabajos prácticos realizados en la materia Estructura de Datos de la Universidad Nacional de Quilmes (UNQ)

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https://github.com/rackspace/maybe-result

Safe handling of null and undefined in Typescript and Javascript

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Implementation of Jean Baudrillard's simulacra concepts in Guile Scheme, with social media simulation example and visual representations

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

Examples of some use cases of the doobie library

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A Rule-Based discount calculating engine for a retail store. The engine reads transaction data, applies various discount rules based on the product, date, and other criteria, and writes the results back to a database.

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

Repository for experiments :smile:

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https://github.com/swirrl/functional-rap

Slides for 2nd half of the talk "The world won't let you RAP and what to do about it" held at DataConnect2022

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https://github.com/gummif/categories

Category theory definitions for the working programmer

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

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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/sacoo7/objective-c-exercises

Exercises to DEEP learn objective C

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Elm rebuild of my mondrian idea

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A project to check your best pushswap instructions

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https://github.com/beyondnetperu/net-functional-sample

A simple sample applying functional programming with dotnet

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https://github.com/bbjubjub2494/conway.sc

Functional Conway's Game of Life implementation using immutable sets

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https://github.com/rcardin/the-joy-of-kotlin-exercises

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

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

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https://github.com/m1sk9/introduction-arrowkt

Introduction at Functional Programing Library "Arrow-kt"

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https://github.com/riiswa/scala2haskell

A detailed comparison between the programming languages language and Haskell by presenting equivalent code.

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Intro talk on functional programming

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

A practical functional library for Python Lovers.

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https://github.com/nofate/elm-scoundrel

A roguelike solitaire card game built with Elm, showcasing Cursor AI's capabilities in functional programming projects

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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/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/hecdelatorre/programacionfuncionalagenda

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https://github.com/roshan-khandagale/marksheet-generator---django

Marksheet Generator is an Django based CRUD application which has all the functionalities related to CRUD operations.

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https://github.com/b00gizm/typed-chain

A type-safe way to combine interdependent functions into a callable chain

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https://github.com/guibrandt/higher-kt

Some experiments with annotation processors, code generation, higher kinded types (sort of) and typeclasses (sort of) in Kotlin

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https://github.com/doughtnerd/qwizard

A forms-building library

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https://github.com/shubhangdutta96/neetcode_150

This repository contains a collection of Data Structures and Algorithms implemented in Scala, utilizing the principles of functional programming. The aim is to provide efficient and clean solutions for common computational problems. In addition, this repository includes solutions to the NeetCode 150 DSA problems series.

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https://github.com/shuddha2021/scalataskmanager

ScalaTaskManager is a powerful and flexible task management application built with Scala. It allows users to create, manage, and prioritize tasks seamlessly, featuring both simple and recurring tasks.

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Some Leetcode DP solutions in Scala made by me

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https://github.com/sebastianofazzino/poker-game

A simplified poker game implemented in Scala, featuring basic game mechanics, user interaction and MongoDB-based persistence.

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Thirteen different ways of implementing a LOGO-style turtle in Rust

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https://github.com/a7mdfre7at/masterly.nonemptylist

A simple and lightweight implementation of a non-empty list in C#, inspired by Scala's List, that ensures a collection always has at least one item. This helps in reducing null-related bugs and ensures safe operations on collections with at least one element.

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https://github.com/joaom00/js-funcional-reativo

Repositório para o curso JavaScript Funcional e Reativo - PENSE como um Dev JS da Cod3r

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https://github.com/deepcloudlabs/dcl165-2020-jan-02

Lab Projects studied in the training: DCL-165: Fundamentals of Scala Programming

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https://github.com/alvarogarcia7/2048-kotlin

Practiced OOP+FP creating a clone of the 2048 game

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https://github.com/kubukoz/zio-demo

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

Slides for Typed FP in TS

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https://github.com/mobiwn/programming-language-design

💻 Dive into a curated collection of programming language comparisons, exercises, and detailed slides in this repository for Urmia University students.

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functional-programming scala

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https://github.com/aryaghan-mutum/algorhythms

A curated collection of algorithm implementations.

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LINQ/monadic extensions for async operations in .net

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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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A simple blockchain written in Haskell along with a Haskell web server for interacting with it along with Postgres interactivity.

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https://github.com/johnpaulada/maybe

A simple, lightweight, Maybe implementation in JavaScript.

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https://github.com/joaomilho/presentations

Presentations throughout all these years

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

Functional programming @ EPFL

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Obsolete utility library for AHKv2

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

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https://github.com/robertdober/testdrivingvim

Developping some common patterns in VimL, Test Driven.

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https://github.com/slava0135/stg-example

Example Haskell program translated to STG and compiled to C

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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/eoic/adventofcode2021

Advent of Code solutions in Elixir.

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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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