Covariance and Contravariance in C# 4.0 <font size=-2><a href= target=_blank>PRO</a></font>

Covariance and Contravariance deal with the oredering of types from narrower to wider and their interchangeability or equivalence in specific cases. When a software programming language supports covariance it means that in specific cases (such as function parameters, generics and function returned types) it supports the conversion from a narrower type (e.g. int) to a […]