Stephane Ducasse – författare

The documentation is missing or obsolete, and the original developers have departed. Your team has limited understanding of the system, and unit tests are missing for many, if not all, of the components. When you fix a bug in one place, another bug pops up somewhere else in the system. Long rebuild times make any change difficult. All of these are signs of software that is close to the breaking point.Many systems can be upgraded or simply thrown away if they no longer serve their purpose. Legacy software, however, is crucial for operations and needs to be continually available and upgraded. How can you reduce the complexity of a legacy system sufficiently so that it can continue to be used and adapted at acceptable cost?Based on the authors'' industrial experiences, this book is a guide on how to reverse engineer legacy systems to understand their problems, and then reengineer those systems to meet new demands. Patterns are used to clarify and explain the process of understanding large code bases, hence transforming them to meet new requirements. The key insight is that the right design and organization of your system is not something that can be evident from the initial requirements alone, but rather as a consequence of understanding how these requirements evolve.* Describes how to reverse engineer a monolithic system to understand how it really works and how to identify potential problems.* Includes reengineering patterns that tackle well-known reengineering techniques often encountered in object-oriented programming, such as introducing polymorphism, factoring out common behavior, detecting duplicated code, and understanding design.* Shows how to build a culture of continuous reengineering for achieving flexible and maintainable object-oriented systems.

Are you completely new to programming? Do you want to have fun learning to program?Squeak: Learn Programming with Robots will teach you core programming concepts based on simple, visual problems that involve manipulation of robots, or "turtles." You will learn basic programming concepts like loops, abstractions, composition, and conditionals.Each chapter is structured so that it can be turned into a one- or two-hour lab session. And while the structured content explains solid principles of object-oriented programming, you'll just have fun going through the sequence of easy examples with the turtle.And be sure to check out BotsInc, the companion learning environment for this book.

This book constitutes the proceedings of the 19th International Conference on Software and Systems Reuse, ICSR 2020, held in Hammamet, Tunesia in December 2020. Due to COVID-19 pandemic the Conference was held virtually. The 16 full papers and 2 short papers included in this book were carefully reviewed and selected from 60 submissions. The papers were organized in topical sections named: modelling, reuse in practice, reengineering, recommendation, and empirical analysis.

This book constitutes the proceedings of the 19th International Conference on Software and Systems Reuse, ICSR 2020, held in Hammamet, Tunesia in December 2020. Due to COVID-19 pandemic the Conference was held virtually.

The 16 full papers and 2 short papers included in this book were carefully reviewed and selected from 60 submissions. The papers were organized in topical sections named: modelling, reuse in practice, reengineering, recommendation, and empirical analysis.