C# Gets Union Types

• C# introduces union types for better performance and compatibility
• Developers can now define union types when interfacing with other languages
• This feature brings C# closer to C-like performance in certain scenarios

The Buzz Score

The Internet’s Verdict: 70% Hyped, 30% Skeptical

Community Reaction

Developers are excited about the introduction of union types in C#.

I love C# and in every iteration we’re getting more and more features to get C-like performance in a lot of scenarios. C# does it really well because if your problem isn’t performance/memory-constrained, you can ignore these features and fallback on the language’s natural ease of use.

However, some developers are skeptical about the syntax.

I wish the syntax looked more like typescript. This will confuse my eyes for a while.

Impact on Interoperability

The introduction of union types will improve C#’s interoperability with other languages.

I’m glad to finally see this making it’s way into C#. Not so much because I want to use unions purely in C#. But because I want to be able to define them when interfacing with other languages.

Some developers note that F# has had similar features for a while.

F# leads the way and C# slowly catches up, as always. Yet for some reason, C# still gets all the mindshare.

Focus Keyword: C# Union Types