Previously undocumented, these 23 patterns allow designers to create more flexible, elegant, and ultimately reusable designs without having to rediscover the design solutions themselves.The authors begin by describing what patterns are and how they can help you design object-oriented software. They then go on to systematically name, explain, evaluate, and catalog recurring designs in object-oriented systems. With Design Patterns as your guide, you will learn how these important patterns fit into the software development process, and how you can leverage them to solve your own design problems most efficiently. Each pattern describes the circumstances in which it is applicable, when it can be applied in view of other design constraints, and the consequences and trade-offs of using the pattern within a larger design. All patterns are compiled from real systems and are based on real-world examples. Each pattern also includes code that demonstrates how it may be implemented in object-oriented programming languages like C++ or Smalltalk.

    Describes the five-year, 150 million dollar project Microsoft undertook to develop an advanced PC operating system.

    Readers will discover the rationale and reasons for such concepts as file system organization, user interface and other system characteristics. In an informative, non-technical fashion, The UNIX Philosophy explores the general principles for applying the UNIX philosophy to software development. This book describes complex software design principles and addresses the importance of small programs, code and data portability, early prototyping, and open user interfaces. The UNIX Philosophy is a book to be read before tackling the highly technical texts on UNIX internals and programming. Written for both the computer layperson and the experienced programmer, this book explores the tenets of the UNIX operating system in detail, dealing with powerful concepts in a comprehensive, straightforward manner.