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/otbivnoe/haskell-time

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

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https://github.com/anurag1101/the_perfect_guess

Perfect Guess is a simple number guessing game built with Python. Players try to guess a randomly generated number between 1 and 100, receiving feedback on whether their guesses are too high or too low. The game continues until the correct number is guessed, with an option to play again. Enjoy testing your guessing skills!

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https://github.com/p2m2/p2m2tools

Development of bioinformatics tools/software related to P2M2 metabolomics platform activities

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https://github.com/nerac/keyu

Key utilities that will simplify your work with Javascript

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https://github.com/bra1l0r/iterify-rs

Iterate over anything with Iterify!

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https://github.com/moonfloof/CMP6090

Functional Programming - University Coursework/Homework

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https://github.com/athrocks/java-8-stream-api

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

Learn fxjs based on functional-programming concept

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https://github.com/sekky61/rust-iterator-aoc

Advent of Code challanges solved using Rust's iterators and functional programming

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https://github.com/sourcevault/flyd-group-within

buffer flyd stream values within x millisecond

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https://github.com/maccauhuru/modern-js-sandbox-code

Code i am writing for the modern JS from beginning course

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

Functional design in Java

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

Pearls of Functional Algorithm Design by Richard Bird - ocaml

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https://github.com/qbarrand/ensiie-iprf-quadtree

An academic project about collision detection to learn the quadtree data structure and functional programming

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https://github.com/samuelastech/invoices

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https://github.com/dubzzz/scala-2048

2048 in Scala

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https://github.com/sophiecollard/variance

Simple examples to illustrate the differences between invariance, covariance and contravariance in Scala

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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/mdb/funcy

A minimal Go package providing a few functional utilities.

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https://github.com/erikmueller/slackoverflow

Private blog & cv

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https://github.com/packquickly/little_lambda

Function composition, the un-Pythonic way!

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https://github.com/leavers/fluentmap

A drop-in Python map replacement featuring parallel and batch processing

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https://github.com/jtberglund/snowballr

A simple library for composing error messages

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

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

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https://github.com/sumanjitsg/redistil

A minimalist Redis re-implementation in Elm, bringing the power of functional programming to Redis interactions.

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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/sergeysolovev/cs-operations

LINQ/monadic extensions for async operations in .net

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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/rafaelvicio/pokedex-rxjs

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

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https://github.com/manik2000/pricer

Option pricing application written in F# and C#.

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https://github.com/emanuelcasco/utn-pdep-tp-haskell

Trabajo practico para el curso K2004 de Paradigmas de Programación

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https://github.com/birdmod/acreader

A tool to browse anime by season and year based on Anilist API.

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https://github.com/wdalmut/curry

An example of currying and partial application

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

Learning eff

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https://github.com/zaikoxander/discover

Programa Discover da Rocketseat

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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/youstinus/toolsgo

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

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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/mavaji/ke2019

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https://github.com/divyanshu-rawat/a-react-game

A kuch bhi (Game) built using react.js

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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/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/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/alanrma/scala-dynamic-programming

Some Leetcode DP solutions in Scala made by me

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

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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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https://github.com/marcin-chwedczuk/fpinscala

My solutions to the exercises from "Functional Programming in Scala" book.

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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/davidlapadula/jsfunctionalprogramming

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

BSTU Functional Programming Labs

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

A simple, functional approach to React

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https://github.com/mahmud035/javascript-pro-by-colt-steele

This repository provides a comprehensive guide to advanced JavaScript concepts and techniques.

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https://github.com/wdalmut/kata-example-2

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https://github.com/mrgravity817/elastack

OTP stack server that pushes and pops

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https://github.com/rom-chik/kma_fp

Functional programming course on Haskell.

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https://github.com/plmuninn/scala-simple-validation

Scala simple validation library

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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/palutz/littletyperstudygroup

The Little Typer study group London

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https://github.com/mhbxyz/fptk

Pragmatic functional programming helpers for Python.

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https://github.com/fathisiddiqi/objek

Manipulate your object with simple functions

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https://github.com/lordgoatius/comonad_rust

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

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https://github.com/kanitsharma/monad-fantasy

A collection of monads implemented in javascript

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https://github.com/joaomilho/presentations

Presentations throughout all these years

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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/marinaa13/sat-solver-haskell

Functional SAT solver in Haskell implementing DPLL and CDCL strategies, with applications to the 3-coloring problem. Features lazy evaluation, clause learning, and non-chronological backtracking

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