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5 Cards in this Set
- Front
- Back
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Pattern Definition |
•Context – recurring set ofsituations where the pattern applies •Problem – system of forces (goalsand constraints) that occur repeatedly in this context •Solution – canonical design form(collaboration) that can be applied to resolve those forces |
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Characteristics of DesignPatterns |
•Provide simple and elegantsolutions to specific problems in object-oriented software design • Discovered, not invented •Capture solutions that havedeveloped and evolved over time as designers strive for greater reuse andflexibility (not initial solutions) |
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Rule of Three |
Must find 3 examples before being considered a pattern |
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Changes |
•Each design pattern lets someaspect of system structure vary independently of other aspects, thereby makinga system more robust to a particular kind of change. |
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Design Patterns Categories |
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