| Reuse through subclassing |
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| • | Easier to
modify the implementation being |
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| reused |
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| • | But, breaks
encapsulation |
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| » | Implementation
of the subclass bound to that of |
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| the parent |
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| – | any change to
the parent requires change to the |
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| subclass |
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| » | Must
reimplement parent if any aspect of the its |
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| implementation
is not appropriate to the new |
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| context in which
it is used |
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