If you're a programmer using C++, Smalltalk, or Eiffel, or if you're about to migrate to object orientation for the first time, you need to know the most important principles of object-oriented design.

For example: In a reliable design, why must a variable's cone of polymorphism lie within that of a method. Is connascence good or bad? How could the inherited methods of a superclass violate the invariant of a subclass -- and how can this be prevented?

Page-Jones answers these questions and more, with characteristic clarity, demystifying the fundamentals of object orientation in a language-independent way. He provides a comprehensive notation for object-oriented design that allows you to depict the design for a whole system or to jot down back-of-the-envelope ideas. features 150+ diagrams and exercises Topics Include

* Encapsulation
* Information Hiding
* State Retention
* Object Identity
* Synchronous and Asynchronous Messages
* Classes and Subclasses
* Inheritance
* Polymorphism
* Genericity
* Reusability
* The Object-Communication Diagram
* States and Transitions
* Connascence
* Class Domains
* Encumbrance
* State Space and Behavior
* Class Cohesion
* Guide to Object-Oriented Terminology
* Object-Orientation in a Historical Context

From the Foreword

". . . vintage Page-Jones. . . . Meilir is a gifted teacher. . . . a relentlessly pragmatic focus based on real-world experience . . . compact examples to guide the developer, whether novice or old hand, toward better object-oriented software solutions. . . . Who could ask for more?" -- Larry L. Constantine

Review

"An explanation of just about everything in object-oriented design." -- C.C. Dilloway, Computer Books Review

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