In software engineering, a design pattern is a general repeatable solution to a commonly occurring problem in software design.
A design pattern isn't 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.
Often, people only understand how to apply certain software design techniques to certain problems. These techniques are difficult to apply to a broader range of problems. Design patterns provide general solutions, document in a format that doesn't require specifics tied to a particular problem.
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