18 Open Source Discriminated Unions Software Projects

Easy to use F#-like ~discriminated~ unions for C# with exhaustive compile time matching

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

C++17 `std::variant` for C++11/14/17

Discriminated unions, pattern matching and partial applications for C#

🧮 A research programming language on top of C macros

Set of handy reusable .NET components that can simplify your daily work and save your time when you copy and paste your favorite helper methods and classes from one project to another

Eggs.Variant is a C++11/14/17 generic, type-safe, discriminated union.

Fast and memory-efficient immutable collections and helper data structures

Variant types in TypeScript

F# Event-Union Contract Encoding with versioning tolerant converters supporting System.Text.Json and Newtonsoft.Json

Discriminated Unions including Maybe (an option type) and Result for javascript with fewer bugs

🏷️ Tagged unions for vanilla JavaScript!

Helper function for exhaustive checks of discriminated unions in TypeScript

Pattern matching and tagged unions in JavaScript without new syntax.

Utility function for exhaustiveness checking with typed JS (TS or Flow)

A simple, serializable sum-type format

C# Analyzer Adding Exhaustive Checking of Switch Statements and Expressions

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