design pattern notes [5] - template method
2012-12-20 23:23
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Template method lets abstract base class (this is the class
to implement the algorithm) to implement invariant algorithm. The subclasses can redefine the algorithm when necessary. By this mechanism, we can reuse the code.
Normally, factory method is used by template to get instance of concrete subclass. Compared with template method, strategy uses delegation to vary the algorithm.
to implement the algorithm) to implement invariant algorithm. The subclasses can redefine the algorithm when necessary. By this mechanism, we can reuse the code.
Normally, factory method is used by template to get instance of concrete subclass. Compared with template method, strategy uses delegation to vary the algorithm.
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