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Design Pattern – Pros and Cons

August 7, 2009
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Pros:

* Capture expertise and make it accessible to non-experts in a standard form .
* Facilitate communication among developers by providing a common language.
* Make it easier to reuse successful designs and avoid alternatives that diminish reusability.
*  Facilitate design modifications.
*  Improve design documentation.
*  Improve design understandability.

Cons:
In order to achieve flexibility, design patterns usually introduce additional levels of indirection, which might complicate the resulting designs and hurt application performance.

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