Covariance and contravariance are precise terms that describe which conversions are safe on parameters and return types. Learn practical definitions for those terms, what new constructs will be ...

Take advantage of read-only generic interfaces such as IReadOnlyList, IReadOnlyDictionary, and IReadOnlyCollection to prevent modifications to collections in your .NET Core applications. A collection ...

Manipulating data is central to almost everything you do as a developer. You know the routine: Pull the data from a database, store it in a Dataset, and display it to the user. Often, the application ...

Generics allow you to write more-robust code with a greater degree of flexibility. They also offer improved performance in many situations and make it possible to simplify common code constructs. The ...

C# is a strongly typed language. This implies that when using C# you should declare a type prior to storing data in it. Though this type safety helps enforce safety and interoperability between ...