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CRC Cards

CRC Cards. OOD - Derek Peacock. Problem Solving Technique. Classes Responsibilities Collaborations. Process. Brainstorming Insight Fun Finding classes Role Play Finding Responsibilities Finding Collaborations Refinement. The CRC Card.

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CRC Cards

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  1. CRC Cards OOD - Derek Peacock

  2. Problem Solving Technique • Classes • Responsibilities • Collaborations

  3. Process • Brainstorming • Insight • Fun • Finding classes • Role Play • Finding Responsibilities • Finding Collaborations • Refinement

  4. The CRC Card Class Name:Super Class Sub Class Responsibility Collaboration

  5. Brainstorming • Use Round-Robin to get candidate classes • Write down each suggestion • Keep up momentum by passing • No idea is wrong • When all candidates are identified discuss, select and winnow down • Select Core Classes, think simple

  6. Good Classes • Have clear name recognized by domain experts • Has singular noun • Has responsibilities • Is needed by other classes • Actively participates in system

  7. Responsibilities • What does the class need to do not How does it do it • What does the class need to know

  8. Collaborations • Use Scenarios to identify scenarios • Role Play the Scenario

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