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/dotpep/restaurant-api

Restaurant API using DRF, with Authentication, Menu, Cart and Order management systems and etc.

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

Array utilities

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https://github.com/chriso345/pipette

Functional programming for Python

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https://github.com/ronanyeah/ramda-workshop

FAC Workshop - March 2017

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Sampling the use of functional interfaces to create bean mappers.

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https://github.com/asterinos1/movie-preference-analyzer

INF424 Project 2025: Movie Preference Analyzer. Big Data analytics tool using Apache Spark, developed in Scala. adhering to functional programming rules.

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https://github.com/p7g/some-functional-functions

some haskell-wannabe functions in JS (typescript)

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https://github.com/milaziabchenko/vanilla-javascript-playground

JavaScript theory and code snippets, using functional and OOP, prototypes, higher-order array methods, regular expressions, DOM, events, and asynchronous JS

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VŠB-TUO - School project in SKJ

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https://github.com/isaquielfernandes/java-functional-programming

Functional Programming

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OOP PHP Fundamental

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https://github.com/bertrand31/data-structures-javascript

Collection of data structures implemented in a functional fashion in JavaScript

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https://github.com/xodio/eslint-plugin-xod-fp

Limit the chaos while doing FP in JS

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https://github.com/codeconscious/unique-file-generator-fsharp

Create an arbitrary number of random, unique (by name and content) files.

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https://github.com/courses-at-nju-by-hfwei/learning-haskell

Learn Haskell and Generally Functional Programming

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https://github.com/jccampagne/stuff

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https://github.com/mlanza/proposal-command-syntax

Proposal: Command Syntax for JavaScript

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https://github.com/alex-aralis/yank-down

Yank a curried parameter down to be the first argument passed.

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https://github.com/sigmasoldi3r/ts-option

Optional values for typescript

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https://github.com/kash1444/py_files

Here are some of my beginner codes to upskill my knowledge in python

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https://github.com/clifftech123/ts_fun_practice

Collection of small and enjoyable functional programming exercises in TypeScrip

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https://github.com/zyad-eltayabi/atm-system

💵 The system allows users to quickly withdraw predefined or custom amounts, deposit funds, check their balance, and securely log out.

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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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Java 8 Programs, All java features practice

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https://github.com/thautwarm/xylearn

the way to fewer tasks and more convincing products.

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Haskell Discord bot for the FP Discord server

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https://github.com/akimichi/kansuu.js

Yet another functional programming library for node.js

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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/constantiner/sibylla

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https://github.com/davidboers/elmeither

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https://github.com/woutervanbakel/try

Try class for C++

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https://github.com/ricardorobledo/programacionfuncional-python

Recopilación de ejercicios de programación funcional en Python

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https://github.com/brunomontezano/r-workshop-intermediario

📚 Course material for the R Intermediate workshop. The website and all presentations are in Brazilian Portuguese.

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https://github.com/carlos-descalzi/funclang

A small functional language interpreter similar to Haskell implemented in python and ANTLR4, done just for self-learning.

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https://github.com/sblack4/functional-programming-in-scala

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https://github.com/joebobmiles/joebobmiles

My user readme.

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https://github.com/milaziabchenko/custom-music-player-with-dropdown-select

Custom music player coupled with custom-made dropdown select, built with HTML, CSS, and JavaScript, combining FP and OOP approaches, and using the Web Audio API functionality

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https://github.com/turbaszek/ct4cs

Challenges from Category Theory for Programmers

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https://github.com/imrafaelmerino/vertx-mongo-effect

Vertx-MongoDB-Effect enables interaction with MongoDB in a purely functional and reactive style, seamlessly integrating with Vertx-effect. This library requires familiarity with Vertx-effect, as both frameworks share a foundational reliance on immutability and persistent data structures provided by json-values.

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https://github.com/rtorr/ts-fp

Typescript, eslint-plugin-fp, and vscode example

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https://github.com/qard/potentially

A maybe/option type implementation with separate derived types to reduce branching

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Haskell, Erlang, Reactive functional programming

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https://github.com/nzrsky/funkobjc

Functional and typed extensions for ObjC 🚀

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https://github.com/dboyliao/learnhaskell

Notes and codes for learning Haskell.

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https://github.com/joshuaganter/go-functional

Iterative functions for functional programming in Go.

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https://github.com/juliencrn/chessgame

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https://github.com/leovido/fp-casestudy-swift

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https://github.com/numq/fn

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https://github.com/agapas/images-switcher

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https://github.com/running-grass/grass-js

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https://github.com/quacksouls/jaf

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https://github.com/lechindianer/fp-talk

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

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Ocaml interpreter (Sedlex tokenizer + Menhir parser) of modularized classes with two means of inheritance.

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https://github.com/barcek/aqfr

run deeper | multipath piping | command-line tool | Elixir + Mix, w/ POSIX shell

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https://github.com/appsweet-co/debug

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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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