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 ...

Even if you're not working in the Microsoft .NET Framework 4.5, .NET provides you with a way to create a read-only collection or to convert an existing List into a read-only collection. I had a client ...