An Atypical ASP.NET Core 6 Design Patterns Guide - Second Edition

Appendix A

This appendix describes different C# features that we use or are related to topics we use in the book. I cannot cover all C# features in an appendix, but I did my best to pick the most relevant ones.

We are covering the following:

• Older C# features covering C# 1 to 8
• What’s new in .NET 5 and C# 9? covering features from C# 9
• What’s new in .NET 6 and C# 10? covering features from C# 10

Older C# features

This section covers a list of C# features that are useful, less known, or I want to make sure you are aware of since we are leveraging or mentioning them in the book.

The null-coalescing operator (C# 2.0)

The null-coalescing (??) operator is a binary operator written using the following syntax: result = left ?? right. It expresses ...