| Topic : Design Patterns for Testability |
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Source : http://norvig.com
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last activity : 07 06 2010 20:18:04 +0000
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A design pattern is a general reusable solution to a commonly occurring problem in software design. A design pattern is not a finished design that can be transformed directly into code. It is a description or template for how to solve a problem that can be used in many different situations. Object-oriented design patterns typically show relationships and interactions between classes or objects, without specifying the final application classes or objects that are involved. Algorithms are not thought of as design patterns, since they solve computational problems rather than design problems.
Uses of Design Pattern
- Design patterns can speed up the development process by providing tested, proven development paradigms
- Design patterns provide general solutions, documented in a format that doesn't require specifics tied to a particular problem.
- patterns allow developers to communicate using well-known, well understood names for software interactions
A pattern must be programmed anew into each application that uses it. Some authors see this as a step backward from software reuse as provided by components. This observation has led to work on "componentization": turning patterns into components, in particular by Meyer and Arnout, who claim a 2/3rds success rate in componentizing the best-known patterns...
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Darpan Sinha, Solution Architect, Fujitsu Consulting India Pvt Ltd
| 08 12 2008 00:31:15 +0000
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Commented by
Dipak Mawale, Senior Executive, Harbinger Knowledge Products
| 06 13 2008 14:12:02 +0000
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