Developers should have a basic proficiency of a language's data types. In this article, Irina Medvinskaya presents an overview of two types of predefined C# variables: value types and reference types.

Take advantage of record types in C# 9 to build immutable types and thread-safe objects.

The announcement of the future addition is related to Extension types which in C# 13 will be expanded by providing additional methods, properties, and members to underlying types.