Learn C-sharp | - Includes The C-sharp 3.0 Features

: Enables adding new methods to existing classes without modifying their original source code.

: Allows the compiler to infer the data type based on the initialization value. Learn C-Sharp - Includes the C-Sharp 3.0 Features

If you are looking to dive deeper into these classic features, these authoritative guides are highly recommended: The history of C# | Microsoft Learn : Enables adding new methods to existing classes

: A shorthand for defining properties without manually creating private backing fields. Learn C-Sharp - Includes the C-Sharp 3.0 Features