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Answer to Question #44621 in Other Programming & Computer Science for David

Question #44621
Does the design pattern play any important role in the development of quality applications by using structured and object oriented paradigm? Justify your answer with logical reasons.
Expert's answer
Design patterns are reusable solutions to problems that recur in many applications. A pattern serves as a guide for creating a “good” design. Patterns are based on sound common sense and the application of fundamental design principles. These are created by people who spot repeating themes across designs. The pattern solutions are typically described in terms of class and interaction diagrams. Examples of design patterns are expert pattern, creator pattern, controller pattern, etc.

In addition to provide the model of a good solution, design patterns include a clear specification of the problem, and also explain the circumstances in which the solution would and would not work. Thus, adesign pattern has four important parts:
• The problem
• The context in which the problem occurs
• The solution
• The context withinwhich the solution works
So, design pattern plays an important role!

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