Top 780 functional-programming open source projects

Async-capable IO monad for JS

A Flock of Functions: Combinators, Lambda Calculus, & Church Encodings in JS

Functional programming, immutable collections and FP constructs for typescript and javascript

Functional programming for modern Fortran

🐤 A multi-paradigm programming language with gradual and duck typing that targets PHP and JS

Generic programming for Scala

Simple, elegant, Pythonic functional programming.

Ko: A generic type-safe language for concurrent, stateful, deadlock-free systems and protocol manipulations

A framework for functional types and operations designed to fit naturally into Swift.

𝛌 Awesome Idris resources

recursion schemes for cats; to iterate is human, to recurse, divine

🎶 Library for declaratively manipulating the Web Audio API

Pure functional event sourcing runtime

This is a movies sample app in Kotlin, which is part of a serie of blog posts I have written about architecting android application using different approaches.

Improve your shell by making it functional through Haskell! (An update to Awkward)

🔮 Estudos obscuros de programação funcional

Purely functional reactive programming library

A mini Scala utility library

See your city's air pollution measured in daily cigarettes. iOS/Android.

A step by step guide to learn JavaScript and programming

ESLint rules to disable mutation and promote fp in JavaScript and TypeScript.

A Nintendo™ Game Boy™ Emulator written in Elm.

Functional programming toolbox

Source code for Scala with Cats

Checked Exceptions-enabled Java 8+ functional interfaces + adapters

Common combinators for Elixir

Building a modern functional compiler from first principles. (http://dev.stephendiehl.com/fun/)

Python port of underscore.js

Go Tutorials - Let's get our hands really dirty by writing a lot of Golang code

Swift + Redux + (Combine|RxSwift|ReactiveSwift) -> SwiftRex

Launch your own Haskell study group. Now.

Code a program in a language of your choice.

A modular functional web framework

A lightweight, distinctly Scala take on functional abstractions, with tight ZIO integration

Mu is a purely functional library for building RPC endpoint based services with support for RPC and HTTP/2

🛒 The Shopping Cart application developed in the book "Practical FP in Scala: A hands-on approach"

🔥🔥 Kotlin Jetpack zero to hero. 新手到高手

Haskell Framework for Electronic Music

ZIO — A type-safe, composable library for async and concurrent programming in Scala

Book of Elementary Algorithms and Data structures

Visual Programming Environment frontend for 'Lambda Bricks'

Functional Template Library for Modern C++

The Ridiculous Application of Reduce

To the end of servers

fp-ts bindings for Fluture

Isomorphic, functional type-checking for Javascript

Dataway is a datastructure representing four possible state of a remote datasource fetching result. It is also a functional API that allows to safely map, combine, and transforme those state and their values.

Release the power in Java programming

Mix both synchronous and asynchronous code without hassle

Crazy figures and animations with Haskell

Visual functional programming language

Lazy and infinite linked lists for JavaScript.

Objects are functions! Treat any Object or Class as a Proc (like Enumerable but for Procs).

A functional programming-style beat-em-up game engine written in javascript

A Really Cool Calculator written in Haskell... or is it?

Fp fantasy in Dart 2

PROTOTYPE: A minimal scripting language - OOP via lambda functions and pattern matching

🏹 Bow Lite is a cross-platform library for Typed Functional Programming in Swift

Powerful, super tiny and easy to use lib to reorder your javascript arrays.

A list of great articles, blog posts, and books for learning XQuery