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: 2026-06-26 00:08:19 UTC
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https://github.com/tmohamedashraft/scala_rule_engine

This Scala ETL pipeline processes transaction CSV files by applying discounts and calculating final prices using pure functional programming principles. The transformed data is then loaded into an Oracle database, demonstrating end-to-end data processing with type safety and immutability.

etl functional-programming oracle-database sbt scala

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https://github.com/david2261/python_lessons

Rules and examples of various built-in functions in Python

functional-programming generators oop pep python

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https://github.com/benjaminangafua/rock-paper-scissor

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https://github.com/rshindo/jfunc

Sealed sum types for Java: Option/Either/Result/Try. Minimal, pattern-matching-first APIs.

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https://github.com/palutz/scalashoppingbasket

A simple shopping basket in Scala, with an idiomatic approach...

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https://github.com/lamdalib/skachuler

Functional job scheduling library for Scala3

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https://github.com/amboxer21/custompythondecorators

Custom Python decorators I wrote to restrict method arguments to a specific type. I also added an encrypt/decrypt decorator as well.

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https://github.com/aliariff/fp19

Functional Programming Class - RWTH Aachen University

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F# and Xamarin... IT COULD WORK!!!

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Habit Tracker app with python.

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Applying recursive function call, Separation of Concerns Principle and functional programming in building a word guessing game.

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🎚️ Functional audio mixer with hardware control for Linux

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This is not mine. It's an orphan fork

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A C++ console game for practicing arithmetic with random questions and instant feedback.

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https://github.com/sentenza/docs

Useful resources about Scala and FP

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using Redux and Auth0 together with Zeit Next.js

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https://github.com/freakwill/fcool

A cool tool for functional programming

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https://github.com/kabeech/monads-are-easy

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https://github.com/kikytokamuro/futils

Functional utils

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https://github.com/giuliom/springraph

F# and gui exercise made in 2011 that simulates a network of 2D springs

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「関数型プログラミングの基礎 JavaScriptを使って学ぶ」をC#で写経

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https://github.com/t2wain/electricalfunc

Electrical power engineering calculation (a functional programming design)

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https://github.com/tejanhu/freecodecamp-code-collection

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https://github.com/nshkrdotcom/gepa_ex

Elixir implementation of GEPA: LLM-driven evolutionary optimization using Pareto-efficient search for text-based systems. Features OpenAI/Gemini integration, BEAM concurrency, OTP supervision, 218 tests with 75% coverage.

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

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https://github.com/critocrito/namefn

Set the name property of a function.

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https://github.com/Shohail-Ismail/Haskell-Texas-HoldEm

A Haskell implementation of Texas Hold'em created for my COM2108 (Functional Programming) module. This project includes a working Texas HoldEm Poker game with additional features such as predefined player strategies (random, passive, aggressive) and an option for human input to play the game.

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https://github.com/xkaunanx/functional-haskell-zone

UTN - 2nd Year Engineering: Functional Programming

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https://github.com/cmattinson/advent-of-code

OCaml my Caml

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https://github.com/ruivieira/java-oresme

A collection of reusable utilites

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https://github.com/vastavikadi/haskell

The language which will make you fall in love with Functional Programming

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https://github.com/vastavikadi/elixir

A personal journey into learning Elixir covering basics, functional programming concepts, and small hands-on projects. Scale to billions, real-time and what not.

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https://github.com/th3n0m4d/project-euler

Project Euler offers a plethora of challenges for those who love math and algorithms.

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https://github.com/rexapex/aetherlang

Aether compiler written in Haskell

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https://github.com/shootermv/seeking-alpha-assessment

App displays constantly changing patterns

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https://github.com/clitetailor/tokenize-monster

Yet another powerful tokenizer in js.

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https://github.com/yayuniversal/projet-ipf-s2

Functional programming project of the 2nd semester - ENSIIE

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https://github.com/indiscriminatecoding/machines

Effectful streams for Scala

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https://github.com/xkrejc70/mit-flp-project1

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https://github.com/kanitsharma/chikara

Monorepo of Mangaflux's frontend and microservices

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https://github.com/sushantpt/understanding_delegates

Code snippets of "Delegates in C#"

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https://github.com/bmmunga/terminal-screen

Program reads a binary encoded stream of bytes supplied as input and generates a graphical representation of the bytes in a terminal window.

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https://github.com/nikoloza23/react-pages

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https://github.com/grahamstrickland/functional_lean

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

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https://github.com/grihabor/gush

Functional go library to make function composition simple

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https://github.com/bryik/trampolining-beyond-the-call-stack

Exploring a technique used to optimize recursive functions.

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https://github.com/rcardin/reader-monad-kotlin

An implementation of the Reader Monad in Kotlin

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https://github.com/414owen/life-hs

Conway's Game of Life in Haskell

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https://github.com/jungstershark/clojurecipe

ClojuRecipe is a Clojure-based command-line tool that suggests recipes using the Edamam API. It leverages functional programming principles to provide reliable recipe suggestions based on the ingredients you have available.

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https://github.com/hamidurrahman1/interpreter-part-2

Implementation of an interpreter (i.e., evaluator) for the expressions with user-defined functions.

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https://github.com/tansudasli/kafka-sandbox

Apache Kafka installation on GCP and e-commerce product additions scenario to Kafka

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Functional programinng

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https://github.com/arduriki/servy

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

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