Style #12
Constraints:
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The larger problem is decomposed into types of 'things' that make sense for the problem domain
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Each type of thing is described by what operations the things of that type can eventually do
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Concrete things are then bound, somehow, to the types; mechanisms for doing that vary
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The rest of the application uses the things not by what they are but by their types
Possible names:
- Types of things
- Abstract data types