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Sometimes
inheritance is difficult to see because you
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do
not see what is common
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Look
for classes that have shared responsibilities and see if
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it is
possible to define a base class that can assume those
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responsibilities
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Recognizing
common base classes is particularly important
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for
OOP. Common code need only be provided once in the
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base
class and is automatically inherited by the derived
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class
(inheritance)
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Consider
dropping classes that are not coupled with
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any
other classes (coupled: using “is a”, “has a”
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“uses”
relationships)
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