C# 15 Closed Class Hierarchies: The closed Keyword in .NET 11 Preview 5
C# 15 adds the closed modifier in .NET 11 Preview 5, giving class hierarchies compile-time exhaustiveness in switch expressions. Here is how it works and the one gotcha.
Tag: csharp-15
3 posts
C# 15 Collection Expression Arguments: Pass Constructors Inline with with(...)
C# 15 adds the with(...) element to collection expressions, letting you pass capacity, comparers, and other constructor arguments directly in the initializer.
C# 15 Union Types Are Here: Type Unions Ship in .NET 11 Preview 2
C# 15 introduces the union keyword for type unions with exhaustive pattern matching and implicit conversions. Available now in .NET 11 Preview 2.