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 ...

You can use covariance and contravariance to provide polymorphic extension to delegates, arrays, and generics in C#. Here’s how. The C# programming language provides support for variance in two ways: ...

Take advantage of delegates to promote flexibility and code reuse in your .NET applications and to implement event-driven programming with ease. A delegate is a type that references a method that has ...