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in reply to Re: Identical list members are sometimes counted as different when compared to each other.
in thread Identical list members are sometimes counted as different when compared to each other.

Thank you, thank you. What a wonderful reply! The alternative approach is instructive but the explanation of its preferability (i.e. the error of my ways :-) is even moreso. I am studying the implications, reading about hash-related functions and so on, but did not want to delay in expressing my gratitude.