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: 2026-06-25 00:08:15 UTC
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https://github.com/anicolaspp/nsource

A composable library for collections

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https://github.com/oelin/hyper-reducer

A generalization of reduce() to arbitrary arity.

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https://github.com/anicolaspp/gnsource

Experimenta Lazy Streams for Go

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https://github.com/tymorrow/elm-dist-demo

Compute Levenshtein distance using dynamic programming in Elm

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https://github.com/dirkjbosman/func_with_scala

Func / Functions / Fun with Scala :)

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https://github.com/sheitak/funcprog2

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https://github.com/chriniko13/scala-simple-tutorial

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https://github.com/amstuta/ocamlbistro

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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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https://github.com/rcardin/functional-portfolio

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https://github.com/gregros/naff

Client-side DOM swiss army knife and switchblade.

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https://github.com/prdpx7/fp

"functors maketh man"

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https://github.com/saber2pr/fp

:heavy_minus_sign: A library for Javascript in functional programing in async | sync | lazy.

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

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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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https://github.com/guiromao/some-functional-programming-java

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

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

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https://github.com/hamidhosen42/functional-banking-website-js

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https://github.com/clifftech123/ts_fun_practice

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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/thautwarm/xylearn

the way to fewer tasks and more convincing products.

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https://github.com/darren277/haskell-blockchain

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StackOverFlow K-Means Analysis

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https://github.com/mhashim6/kotlinheroes

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/jumpn/utils-promise

Promise Utilities

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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/qard/potentially

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https://github.com/nshkrdotcom/gemini_cli_sdk

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https://github.com/amillert/camodular

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

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

React app to switch images on toggle, on mouse hover or touch and by scrolling the page, made to practice React Hooks.

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https://github.com/ardywsptr/phpdasar

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https://github.com/lmarzocchetti/wangtiles-ml

Wang Tiles generator in Ocaml

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

自用的js库

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https://github.com/quacksouls/jaf

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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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https://github.com/barcek/aqfr

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

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https://github.com/geekeast/intro-to-lodash-fp

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https://github.com/JunggiKim/java-refined

Refinement and functional value types for Java 8+

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https://github.com/guibrandt/persistentarray

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https://github.com/gregros/dropin-geometry

Vector and complex math for graphics. Unfinished.

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https://github.com/stuartdaniells/portfolio-website

React

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

Functional Programming subject of @CMDA-TT

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https://github.com/reshiadavan/catena

simple, lightweight, actor-based distributed blockchain

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https://github.com/armadacore/essentials

TypeScript essentials for explicit error and absence handling - Option, Result, typed Exceptions and optional Callbacks the compiler actually enforces.

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https://github.com/will-1-am/stanford

Stanford cs193p Spring 2020 course led by Paul Hegarty illustrating MVVM architecture, generics, functional programming using SwiftUI and Xcode. Homework assignments are included as separate git branches.

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

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https://github.com/azuobs/naive-workflow-manager

Naive-workflow-manager microservice with akka-http and akka-actors

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https://github.com/roxtra1/citytowers

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https://github.com/aayushyadavz/todo-app-react

Built a ToDo App using React JS.

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https://github.com/josewebdev2000/ztm-python-course

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https://github.com/rbaltrusch/stream.lua

A lazy iterator-chaining library for Lua similar to the Java Stream API

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https://github.com/carlosvinimsouza/projeto-livro-python

Primeiro trabalho de extensão com Python

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https://github.com/wdalmut/kata-example-1

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https://github.com/manoelcampos/fp-projeto-1-poligonos-flatmap

Um projeto base em OpenJFX para desenhar polígonos na tela e permitir a implementação de algumas funções para descobrir o tipo de cada polígono e calcular seu perímetro usando Stream.map() e flatMap()

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https://github.com/rvarago/cpp_optional_extras

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https://github.com/milaziabchenko/minimo-website

Stylish photodiary | lifestyle | travel multi-page website created with modern features of HTML5, CSS3, and JavaScript, combining functional programming and OOP approaches

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

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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/blutorange/js-elbe

Utility for working with streams (iterables).

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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/mahi97/numex-lang

~ The pure functional Interpreter for NUMEX Language Based on Racket

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https://github.com/kevindasilvas/comments-kanban

Haskell microservice to add comments to a task in mini kanban project

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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/justdvnsh/func.py

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https://github.com/costineest/rpu

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