Framework Design Guidelines: Extension Methods

Continuing in our weekly blog post series that highlights a few of the new additions to the Framework Design Guidelines 2 nd edition .. This content is found in the Extension Methods section of Chapter 5: Member Design. One of the major new features we added to the Framework recently is extension methods. While this a very powerful new feature, it does come with some new responsibility. CONSIDER using extension methods in any of the following scenarios: To provide helper functionality relevant to every implementation of an interface, if said functionality can be written in terms of the core interface. This is because concrete implementations cannot otherwise be assigned to interfaces. For example, the LINQ to Objects operators are implemented...(read more) ...