Summary: C# 14 preview introduces discriminated union types and extends pattern matching with exhaustiveness checking, bringing more functional programming patterns to C#.
Why It Matters for Developers
Union types can reduce boilerplate and eliminate entire categories of null-reference bugs. For developers working with domain models or complex state machines, this is one of the most impactful language additions in years.
My Take
This feature solves real problems in business applications — especially when dealing with multi-step workflows and optional data. Worth learning early.