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CRC Cards in the context of eXtreme Programming
CRC Cards in eXtreme Programming
CRC (Class Responsibilities Collaborators) Cards are a collaborative design technique used in eXtreme Programming (XP) to facilitate communication and understanding of classes in object-oriented software development.
Purpose of CRC Cards:
Communication: CRC cards help team members communicate and discuss the responsibilities and collaborations of classes in a visual and interactive manner.
Understanding: They provide a clear and concise representation of classes, their responsibilities, and how they interact with other classes in the system.
Components of a CRC Card:
- Class Name: The name of the class being described.
- Responsibilities: The tasks or functions the class is responsible for.
- Collaborators: Other classes that the described class interacts with or relies on.
Usage of CRC Cards:
Brainstorming: Teams use CRC cards in brainstorming sessions to explore potential classes and their responsibilities.
Design: They help in the collaborative design of classes and their interactions before implementation.
Evolution: As the system evolves, CRC cards can be updated and revised to reflect changes in the design.
Benefits of CRC Cards:
- Visualization: They provide a visual representation of the design, making it easier to understand and communicate.
- Collaboration: Facilitate collaboration among team members by encouraging discussion and sharing of ideas.
- Flexibility: Easy to update and modify as the design evolves.
Resources:
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by Stephan Hagemann