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: 2026-06-18 00:08:13 UTC
- JSON Representation
https://github.com/bogoware/monads
C# Maybe and Result monads
csharp dotnet functional-programming maybe monads nuget result
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https://github.com/kubukoz/catharsis
Utilities for cats-effect that don't really fit in the upstream.
cats cats-effect functional-concurrency functional-programming functional-scala pure-fp scala typelevel
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backend elixir elixir-lang functional-programming phoenix phoenix-framework
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computer-science data-structures data-structures-and-algorithms functional-programming javascript study-guide system-design
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Fun with JavaScript functions
closures exercises function functional-programming javascript problem-set recursion
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A Dash-docset for Λrrow
arrow-kt category-theory dash dash-docset functional functional-programming kotlin kotlin-library monads
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https://github.com/correia-jpv/fucking-awesome-fp-js
😎 A curated list of awesome functional programming stuff in js. With repository stars⭐ and forks🍴
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Haskell/Hask inspired classes and functions in Python
functional-programming functor haskell monad profunctor-optics python
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Bibliografía sobre teoría de categorías y programación funcional
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https://github.com/samadpls/scala-functionalproramming
This repo contains my practice on Scala and functional programming. It includes lectures and labs from various sources that helped me learn the basics and advanced concepts of Scala.
dotty functional-programming opensource scala scala3
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Command the turtle to draw vector graphics in Elm
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https://github.com/8451/functional-pypelines
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Introduction into functional programming free structures: free monads, free monoids, free applicatives.
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Responsive Quiz Application made with React and Prisma Framework.
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Sample code to prepare a kata on functional programming.
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https://github.com/trackoor/OPG_Parser
🔪 OPG (Operator Precedence Grammar) Parser, in Coq.
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fmodel-rust demo - Functional and Algebraic Domain modeling with Rust
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https://github.com/nshkrdotcom/perimeter
Advanced typing and type validation mechanism for Elixir - runtime type checking and contract enforcement for BEAM applications
beam contracts development-tools elixir erlang-vm functional-programming gradual-typing otp productivity runtime-validation static-analysis static-typing type-annotations type-checking type-inference type-safety type-system typing validation
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https://github.com/marceloboeira/option.cr
ƛ Crystal implementation of Scala's Option Monad
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https://github.com/juliomatcom/fp-array
More declarative and convenient functions than in Array.prototype. No dependencies
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https://github.com/sliptype/purescript-meiosis
🦑 A purescript implementation of the Meiosis pattern
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An functional experiment in Raft & Clojure
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https://github.com/yarnaimo/lifts
⛵ LIghtweight Functional programming library for TypeScript
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some metaprogramming spice for Python
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https://github.com/rightfold/feldspar
A programming language.
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https://github.com/jemtaly/projectlambda
A calculator / programming language based on lambda calculus. 基于 Lambda 演算的简易编程语言。
calculator esolang functional-programming lambda lambda-calculus programming-language
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https://github.com/mozzius/lyre
a typed, functional, concurrent programming language
compiler functional-programming language programming-language
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https://github.com/yusukehosonuma/shlist
HList for Swift by statically meta-programming.
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rust style error handling for cpp
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https://github.com/ksxgithub/deno-compose
pipe, pipeline, and compose functions with 64 overloads per function.
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Implementation of a Match Three type game. Swipe around items to match three in a row.
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https://github.com/stefanmaric/retryyy
A better way to retry async operations in TypeScript/JavaScript.
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https://github.com/nekronos/resultsharp
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A basic, home-made functional effect system with powerful errors
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https://github.com/wnnawalaniec/phlambda
Functional library for PHP simillar to JS Rambda (https://github.com/ramda/ramda).
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https://github.com/deathbeds/poser
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composition functional-programming python syntactic-sugar
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https://github.com/diego-vicente/monadic-gcd
Learning exercise (GCD) with explanation about monads
functional-programming functional-programming-examples monads
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https://github.com/davidtimms/effective.ts
Write safe, concurrent, fault-tolerant programs in TypeScript.
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Public domain functional programming in C.
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https://github.com/tsinis/functional_status_codes
This pure-Dart package offers a functional approach to handling HTTP status codes 🌐
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Mood Tracker
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Functional Programming in Python 中文翻译
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Reference implementation of EXPath Tasks in pure XQuery
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https://github.com/bhosale-ajay/dotless
A JavaScript library to write linq style functional code
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https://github.com/johncgriffin/yogofn
Functional Map/Reduce/Filter for Golang
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https://github.com/eckelon/convenient-fp-utils
module that wraps different fp libraries together and adds some convenient functions
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https://github.com/catseye/quylthulg
MIRROR of https://codeberg.org/catseye/Quylthulg : A functional language with goto's inside data structures
esolang esoteric-language esoteric-programming-language functional-programming
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https://github.com/jasonzhu1313/interactiveexpressionparser
This project focus on using functional programing to parse the expression, I use Haskell to develop an interactive expression parser using a lot of features of Haskell, you can use haskell compiler such as GHCI to run the program, Let's begin.
expression-evaluator functional-programming ghci haskell haskell-compiler interactive parse
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https://github.com/muradisazade777/quizfusion
QuizFusion is a modular Java-based quiz engine that loads questions from a JSON bank and exports results for Python-powered analytics. Lightweight, branded, and developer-friendly — perfect for CLI-based learning tools and cross-language integration.
analysis api backend functional-programming java json library modules python result running server service
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https://github.com/yamiteru/pipu
🔥 hellishly fast, 🤏 tiny and 🤖 modular async/sync pipe toolkit for typescript.
fp functional-programming javascript pipe pipe-operator typescript
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https://github.com/huanhulan/petrol_pump
sodium-typescript & Reactjs implementation of Petrol-Pump example from book "functional reactive programming"
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https://github.com/oisee/minz
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Unified sync/async stream processing with category-based filtering. Single API for IEnumerable/IAsyncEnumerable with Cases/SelectCase/ForEachCase pattern. Eliminates Rx complexity, enables elegant pipeline composition for real-time data processing.
async-await async-enumerable category-filtering csharp data-streaming dotnet event-processing fluent-api functional-programming linq-extensions observables-alternative pipeline-composition- reactive-programming stream-processing
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https://github.com/menacingmecha/gd3_fp
Minimal, single-file functional programming module for Godot Engine 3.x
functional-programming gdscript godot godot-engine
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https://github.com/mlms13/bs-nonempty
NonEmpty type with Array and List implementations for ReasonML and OCaml
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Merge objects/arrays declaratively
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https://github.com/jaynil1611/programming_exercises
This repository contains solutions of all the homwework exercises of functional programming session of LevelOne.
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Personal experiments with technologies
functional-programming haskell
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SwiftPipeline is a lightweight, functional-style library for Swift that brings the power of threading macros inspired by languages like Clojure.
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https://github.com/regadas/scio-cats
leverage cats type classes and data types in scio pipelines
apache-beam cats functional-programming scala scio
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Roc Package for building with LLMs.
artificial-intelligence functional-programming roc-lang
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https://github.com/lettier/matrix-inverse-calculator
Input a square matrix and calculate its inverse if possible.
functional-programming haskell interactive javascript matrix-math purescript
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The littl programming language
functional-programming javascript lit procedural-programming programming-language transpiler
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cpp cpp17 cpp20 functional-programming header-only multithreading railway-oriented-programming
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elixir functional-programming lessons youtube
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https://github.com/cassanof/stiletto
A Compiler written in ML for a python-like (mostly) functional language
compiler-design compilers functional-programming ocaml python
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https://github.com/christianhg/bukk
Functional programming for Norwegians ⛷️
curry data-last es2015 es6 functional-programming library
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https://github.com/jasonbot/chains
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functional-programming golang iterator itertools
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https://github.com/owaismohsin001/sunlight-lang
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algebraic-data-types beginner-friendly compiler dynamic-polymorphism dynamic-programming dynamic-typing functional-language functional-languages functional-programming language lua memoization memorization multimethod polymorphic-functions polymorphic-variants polymorphism pure-functional sunlight sunlight-lang
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Higher-order functional predicates.
assertion-library filtering functional-programming higher-order-functions predicate-logic predicates
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functional-programming haskell hindley-milner parser type-checker
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function functional-programming getter immutable javascript js lens lense lenses setter
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https://github.com/adzz/maybex
An Implementation of the Maybe monad in Elixir
elixir functional-programming maybe monad monads protocols
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Optics for the impoverished
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https://github.com/ph-7/useful-php-functions-v2
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functional-programming functions php
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