Repeat the previous exercise, but using a variant record (union) type to represent syntax tree nodes. Repeat
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Repeat the previous exercise, but using a variant record (union) type to represent syntax tree nodes. Repeat again using type extensions. Compare the three solutions in terms of clarity, abstraction, type safety, and extensibility.
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Here is a solution in Pascal using unions variant records Here is a solution in Ada 95 using type ex...View the full answer
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