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| (_, Var v) -> putRT rt {env = Partition.joinElems (Var v) ts env} | ||
| _ -> empty -- ts /= ts', both are values | ||
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| -- | Apply the current substitution on the given 'Term'. This function does path compression: if it |
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This function does path compression: if it finds a variable, it recurs.
This statement is half true, it does recur, but it does not update the environment to compress the path. This PR tries to address that using the union find algorithm.
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Benchmarks don't show any improvement but it's worth investigating using union find to shorten the substitution paths in
subst.