.NET (OK, C#) finally gets union types🎉: Exploring the .NET 11 preview - Part 2

This article covers the introduction of union types in .NET 11 (C# 15) preview, a long-requested feature common in functional programming languages like F# and TypeScript. It explains what union types are, using examples like Option<T> and Result<TSuccess, TError>, and demonstrates how the new 'union' keyword allows developers to define types that can represent multiple unrelated types, such as different operating system records. The post discusses implementation details, benefits over traditional approaches like base classes or object storage, and how to create custom union types. Written using .NET 11 preview 4, it notes that features may change before final release.