Top 780 functional-programming open source projects

Concise anonymous functions for Emacs Lisp

Coalton is an efficient, statically typed functional programming language that supercharges Common Lisp.

🔧 Fast, modern, and practical utility library for FP in TypeScript.

Functional models and algorithms for sparse signal processing

Yet another Hacker News reader, but this time in Elm!

Interpreter of the ITGL with dynamic type inference

🗃 A mono-repository with functional programming helpers, algebraic data types, util functions, types and even some micro frameworks in TypeScript.

Curly programming language

An Erlang/OTP parse transform to emulate Scheme's cut/cute syntax.

Automatic trail recursion optimisation

An ESLint plugin to enforce the use of total functions (and prevent the use of partial functions) in TypeScript.

Λrrow Fx is part of Λrrow, a functional companion to Kotlin's Standard Library

Patrones funcionales en Go

An opinionated micro-framework to help you build practical JSON APIs with Play Framework (or akka-http)

Platform for associating content to their providers.

A universal language for business and technology

For anyone who's struggling to put an http4s server together with ZIO

📝 Provides a simple API to normalize texts, whitespaces, paragraphs & diacritics.

Go Stream, like Java 8 Stream.

Like Promise.all(array) but with an object instead of an array.

Implementation of the Fibonacci sequence in JS using pure Lambda Calculus

Fullstack React: The Complete Guide to ReactJS and Friends by Anthony Accomazzo

Demo for Functional Programming with Ramda workshop at DeveloperWeek 2018

Rust implementation of µKanren, a featherweight relational programming language.

🔔 Jingle is a dynamically-typed, multi-paradigm programming language designed for humans and machines.

Measure twice, cut once. Lisp-like functional language for computable & immutable specifications, interpreted by WebAssembly & the Ethereum Virtual Machine.

Fun functional programming with pipelinable functions

Our Website

A simple blog software written in Haskell

Simple Functional Programming of C++ from Scratch 从零开始的简单函数式C++ ZEROから始める使いやすい関数型プログラミング

Functional Programming for EcmaScript(Javascript)

Preface is an opinionated library designed to facilitate the handling of recurring functional programming idioms in OCaml.

Lightweight and highly extensible .NET scripting language.

Make it possible to chain regular functions

🐘🔍Incomprehensible Finder Refactoring Kata port for PHP

Small, generic functional helper library for node.js and browsers

A brief presentation comparing Scala with Kotlin aimed toward Scala FP devs at 47 Degrees

Notes on Scala and Functional Programming

🍛 Utility for currying functions

A project for exploring Akka with Scala

Various kata & content to learn and practice design with monoidz inside

Companion repo for Functional Programming for Beginners with Javascript

FP-TS Cheat Sheet

Tau is an open source interpreted programming language designed to be minimal, fast and efficient.

⚡ Functional Scala HTTP server, client, and toolkit.

configuration with less hassle

The Ultimate Workshop Track for #Rust Developer

Event sourcing in java with vavr, akka stream and vertx reactive PG driver

Useful Erlang Functions Library

😃 A functional reactive programming (FRP) demo created with PureScript events and behaviors.

hooks for all the functions!

This repo is DEPRECATED. Please use https://github.com/bobocode-projects/java-fundamentals-course

GSD (Get your Stuff Done) | Basic Todo list for demonstrating CQRS/Command Sourcing in Haskell

🔥 Redux side-effects as a function of state

Some bifunctor IO type classes

Point-Free server code.

A withdrawn proposal for standardizing some useful, popular helper functions into JavaScript’s Function object.

An Erlang/OTP library for reading and updating deeply nested immutable data.

🌐 Functional HTTP client generator from an OpenAPI/Swagger specification.

This is a utility for mocking json data that pretends the api response data with JSON format.