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Responsibility-driven design is inspired by the client/server model. It focuses on the contract by asking

— Rebecca Wirfs-Brock Object-oriented design: a responsibility-driven approach (1989)

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Notes from Wikiquote

What information does this object share? | An important point is that information shared by an object might or might not be part of the structure of that object. That is, the object might compute the information, or it might delegate the request for information to another object. | p. 73

More quotes by Rebecca Wirfs-Brock

The goal of responsibility-driven design is to improve encapsulation. It does so by viewing a program in terms of the client/server model.

Object-oriented design: a responsibility-driven approach (1989)

A subsystem is a set of classes (and possibly other subsystems) collaborating to fulfill a set of responsibilities. Although subsystems do not exist as the software executes, they are useful conceptual entities.

Object-oriented design: a responsibility-driven approach (1989)

Responsibility-driven design specifies object behavior before object structure and other implementation considerations are determined. We have found that it minimizes the rework required for major design changes.

Object-oriented design: a responsibility-driven approach (1989)

Frameworks are white boxes to those that make use of them. Application developers must be able to quickly understand the structure of a framework, and how to write code that will fit into the framework. Frameworks are reusable designs as well as reusable code.

Object-oriented design: a responsibility-driven approach (1989)

Frameworks are skeletal structures of programs that must be fleshed out to build a complete application. For example, a windowing system or a simulation system can both be viewed as frameworks fleshed out by a windowed application or a simulation, respectively.

Object-oriented design: a responsibility-driven approach (1989)

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Attribution

Quote text and notes from Wikiquote: Rebecca Wirfs-Brock (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.