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Kim Nguyễn authored
table instead of a 'recursion set' like in the paper. The hash table is tricky: - its keys should be both the type we are normalizing and delta - we should store a flag together with the constraint set, indicating whether the computation of the normalization for the corresponding type has finished. If it has, we can use the associated constraint set instead of CS.sat and stop recursion. If it has not, we can return CS.sat (like the previous base case). We also update the test case files to check that everything is in order: - part2.cd has been rewritten to make use of the new syntax and remove the red-black trees examples that are now in a separate file - red-black.cd is a fully typechecking file - rb-fail.cd has the type definition and the wrong balance function.
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