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isa rule comparison table |
Subject | states | is an instance of | is a kind of | is a subtopic of | has definition |
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rule | principle | A principle that should almost always be applied | |||
isa rule | that class A can only be a valid subclass of class B if it makes sense, in English, to say, "an A is a B" | rule | 2.5 - Organizing Classes Into Inheritance Hierarchies |
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