sum-types

Algebraic data types for C99

Java 8 annotation processor and framework for deriving algebraic data types constructors, pattern-matching, folds, optics and typeclasses.

Untyped/typed functional standard library for Javascript.

Monad, Functional Programming features for Golang

🧮 A research programming language on top of C macros

Algebraic data types for Python (experimental, not actively maintained)

Fast and memory-efficient immutable collections and helper data structures

ADT sum type in typescript

Recursive Variant: A simple library for Recursive Variant Types

ftor enables ML-like type-directed, functional programming with Javascript including reasonable debugging.

A type-safe and space-efficient sum type for C# (comparable to discriminated unions in C or C++)

A code generator enabling sum-types in Dart

Functional Enum type / Sum type for javascript with simple pattern matching

Track periodic goals — a sample iPhone app

A namedtuple-style library for defining immutable sum types in Python.

Elm Either

Solutions to exercises from the book Haskell Programming

Dart Union class (sum type)

A tool for generating unions in Go

Support material for "Functional Programming in Swift" @ Functional Conf, Bangalore, 2017

Use a Monocle Prism to handle <select> conflict between ADTs and Strings

Pattern matching for destructured values (core.match & spec)

PrimeFuncPack Core is a functional programming pack for .NET consisting of the fundamentals: Optional and Result monads, Failure type, Tagged Union, Unit type, and functional interfaces (SAM interfaces), as well as the useful extensions. The Pack supports both asynchronous and synchronous programming models.

Algebraic Sum types for Javascript (beta)

General-purpose sum types.

Dart safe, generated sum types

Algebraic sum types for TypeScript, designed after Rust's enums

Implementation of Alegbraic Data Types (ADTs) in Python

Utilities and conventions for functional domain modelling in Java