Framework Design Guidelines: Conventions, Idioms, and Patterns for Reusable .NET Libraries

Framework Design Guidelines teaches developers best practices for designing system frameworks and reusable libraries for use with the Microsoft .NET Framework and WinFX. This book focuses on the design issues that directly affect the programmability of a framework, specifically its publicly accessible APIs.

Chapter 4 of Framework Design Guidelines, titled "Type Design Guidelines," presents guidelines that describe when and how to design classes, structs and interfaces. In this chapter, Abrams and Cwalina divide types into four groups and discuss the do's and don'ts of type design.