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 ...

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 ...

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: ...