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typing [2017/04/13 18:32] christian [PDF type hierarchy] |
typing [2017/04/14 09:00] christian [The implementation] |
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| When an object is not a subclass of a type, it can be specialized if the objects class subsumes the type. | When an object is not a subclass of a type, it can be specialized if the objects class subsumes the type. | ||
| - | ==== PDF type hierarchy ==== | ||
| - | The type hierarchy of PDF objects is shallow and oriented by the use of types in attributes, not by class membership. For example, there are no subtypes of Dictionary or Stream. | ||
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| - | ===== The implementation ===== | ||
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| - | {{: | ||