File-based apps, extension members, nameof improvements, and user-defined compound assignment operators make life easier for C# programmers. You’ll need .NET 10.

Take advantage of extension methods to add functionality to existing types without needing to modify or derive from those original types. In the C# programming language, extension methods enable you ...

So I'm at a client's site and we're discussing adding a new method to an existing class. One of the client's programmers said, "We should put the method in the base class and let all the derived ...