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: 2026-06-27 00:11:42 UTC
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https://github.com/ejgallego/imp-lab

Lean playground for programming language modeling tooling.

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https://github.com/martianoff/gala-team

Multi-agent Claude CLI orchestrator -- a Team Lead delegates to Engineers and QAs, reviews their work, and hands you a PR for sign-off. Written in GALA with gala_tui.

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https://github.com/programadorthi/the-joy-of-kotlin

The Joy of Kotlin book exercises

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https://github.com/beyondnetperu/js-functional

A simple samples applying functional programming with JS

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https://github.com/powerunit/powerunit-extensions-exceptions

Objects to support checked exception in lambda

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https://github.com/anicolaspp/gnsource

Experimenta Lazy Streams for Go

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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/moonfloof/cmp6090

Functional Programming - University Coursework/Homework

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Haskell, Erlang, Reactive functional programming

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https://github.com/martianoff/gala-acp

Transport-neutral Agent Communication Protocol for GALA: content-hash message identity, idempotent dedup, a delivery/liveness FSM, and a generic agent-run contract — with a Claude backend.

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🎁 A monad transformer to wrap any Try[A] with another Monad and conveniently operate on the nested result

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New word in javascript conditionals!

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An implementation of multiple dispatch for Ruby. Also known as generic-functions or multi-methods.

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https://github.com/oelin/subjectify

Make all method calls return their call subject.

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https://github.com/heracliteanflux/exercises-scheme

Exercises in the Scheme programming language.

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

Optional values for typescript

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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

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https://github.com/delonnewman/hash_delegator

Thread-safe immutable objects that provide delegation and basic validation to hashes.

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My solutions for some of KotlinHeroes' problems.

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https://github.com/woutervanbakel/try

Try class for C++

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https://github.com/sash-ua/gen_drift_monad-ts_a4

The simple web application Modeling Genetic drift. Used: Angular4 + Angust+ TypeScript, Angular material, Rollup, D3, HammerJS, SCSS, Gulp, HTML5, CSS3.

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https://github.com/krishnalagad/learn-cpp-with-me

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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/unosd/unofs

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https://github.com/joebobmiles/joebobmiles

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Introduction to Optics (Lenses, Prisms etc) in Scala.

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Building blocks for functional programming in PHP, inspired by Haskell.

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This is the second project that passed the test for the Udacity Intermediate JavaScript nano degree.

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https://github.com/birdmod/adventofcode2017

My solutions in F#

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PubSub pattern library with types support

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https://github.com/vtramo/java-problems

Solutions for various types of medium-to-challenging level problems.

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https://github.com/lapets/course-programming-languages

Lecture notes, assignments, and other materials for a one-semester course on programming language concepts and theory, interpretation and compilation, and programming paradigms.

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https://github.com/jonaskromer/blackjack

Blackjack implemented using scala providing a tui and gui

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https://github.com/markehost/javascript-exercises

Coding exercises in JavaScript.

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https://github.com/v-spassky/no-exceptions

🚨 Errors as values for Python.

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

Code snippets used during the presentation

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

Desarrollo de un Parser para interpretar imágenes realizado en la materia Técnicas Avanzadas de Programación en UTN FRBA

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https://github.com/primeeagle/sonata

A modern scripting language with an advanced type system, supporting both object-oriented and functional programming paradigms.

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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/gekomad/fpinscala

Exercise solutions for "Functional Programming in Scala"

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https://github.com/kiquetal/fsharp-workout

Hands-on F# training — 6 hyperfocus sessions covering type-driven design, pipelines, pattern matching, domain modeling, async, and integration

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

Scala simple validation library

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https://github.com/willmcpherson2/soop

The Soop Language

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https://github.com/chocolacula/donotcopyanalyser

Roslyn analyzer for prevention of copying certain data

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https://github.com/al-ghaly/ruleengineusingscala

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/jvz/musigma.blog

A blog about programming.

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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/rcardin/rockthejvm-exercises

Solutions to the exercises proposed during the courses on RockTheJvm site

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https://github.com/monban/fp

Collection of functional programming constructs for Go

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

This repository hosts the "Goodies To Go (G2G)" project, an F#-based online ordering system for a canteen, demonstrating domain modeling and basic functionalities.

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

Swift version of the original 13 ways of looking at a turtle in F# by Scott Wlaschin

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https://github.com/jwhittle933/funked

A Functional Library for Go

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https://github.com/tricinel/cuddy

An aggregation pipeline built in a functional programming style that lets you search, group, order and transform a collection.

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https://github.com/rsrini7/myelmresume

My Short Resume using ELM Language 0.18

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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/drmarjanovic/msc

An example of using telemetry in a system built on microservices-based architecture.

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https://github.com/zoul/elm-currency-converter

Trivial currency conversion apps showcasing the Elm architecture

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https://github.com/williamlsh/js-pandora

Practical challenging cases involved with algorithm, functional programming and interviews implemented with JavaScript

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

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https://github.com/simonwjackson/tetris.js

Tetris in pure JavaScript

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https://github.com/palutz/calculateseries

A simple F# solution, with tests and console app to calculate a series of numbers

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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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https://github.com/j-christl/ocaml-utils

Some basic OCaml utility functions I will keep updating while learning functional programming

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https://github.com/matt-mcmahon/functional

A learning-friendly functional library with a focus on clear source-code and readable function signatures.

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https://github.com/asarkar/thinking-functionally-with-haskell

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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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Scala scripts with functional programming in Scala 3 (Cats Effect, ZIO, Skunk etc.)

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https://github.com/aravindraj777/streamdream

A dedicated space for mastering Java Stream API with hands-on workouts and exercises. Exploring the art of functional programming through practical examples and challenges.

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