Talk:Nub Sieve

Question: what’s meant by “pre-correction of bad meme” here?

‬

Also, a related question about the ‬ part: why make a scalar probe into a vector before searching in the Unique/Nub? I see that doing the search without increasing the probe to rank 1, as in ‬, does not give an error…
 * Nub-sieve used to be computed like that, but it was a mistake. (∪⍳⊢)'A' would give a scalar, which then errors in ⍳⍨ Adám Brudzewsky 14:54, 29 June 2023 (UTC)


 * "Bad meme" is what Roger Hui called it. The term probably made it into some of his publications (Tolerant Unique?), and could be cited if so; otherwise it should be removed. I think I copied a lot of this page from implementor-targetted material I had from proposing Unique Mask at Dyalog, so it's not all the best presentation for a wiki. --Marshall (talk) 18:26, 29 June 2023 (UTC)


 * Ah. So, ok, that explains the … but why do index-in-nub before doing  ? why not just the naive  ?"


 * Compare results on : the value indicated by   doesn't match all argument elements, so it can't be said to reduce the entire argument to unique values. There's a short section on this for Unique. --Marshall (talk) 14:13, 21 July 2023 (UTC)