1. For lists, sort-then-search is more expensive than the hashtable usually.  Also, the order of inputs matters, as tolerant-equals is not transitive.

2. For tables, which we were discussing, sort (always intolerant) doesn't get the job done.  The entire first column might be tolerantly equal and provide no help toward indexing later columns.

It's a hard problem, which has defeated me and Roger before me. Any progress would be much welcomed.

Henry Rich

On 8/30/2023 7:43 AM, Raul Miller wrote:
Shouldn't tolerant i.~ use grade, sort and a binary search?

Thanks,


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