Strategy pattern

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The strategy pattern is useful when there is a need to separate the implementation of a process from the class that uses it.
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#REDIRECT [[Strategy]]
There are several reasons that this can be useful.
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* There are several different versions of the algorithm to implement.
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* The algorithms are used in more than one place. [[Once and only once]]
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* There is a need to create an encapsulation boundary around the algorithm to hide implementation details.
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* The class using the strategy implements many different behaviours choosing which behaviour to use with ''if'' statements. Each choice can be represented as a strategy instead simplifying code and making the intent explicit.
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[[Image:Strategy pattern.jpg|frame| The strategy pattern]]
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Latest revision as of 23:30, 4 October 2008

  1. REDIRECT Strategy
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