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You could have invented Fenwick trees

(www.cambridge.org)
131 points matt_d | 2 comments | 25 Jan 25 00:23 UTC | HN request time: 0.402s | source
1. code_biologist ◴[25 Jan 25 01:54 UTC] No.42818697[source]▶
Written by Brent Yorgey — I'll definitely give it a read when I have time. When I was learning Haskell, I found his Typeclassopedia [1] to be the best explanation of Monads, Monoids, Applicative and such. His pedagogical approach was delightful in contrast to all the "monad is like a burrito" tutorials.

[1] https://wiki.haskell.org/wikiupload/e/e9/Typeclassopedia.pdf

replies(1): >>42972251 #
2. penguin_booze ◴[07 Feb 25 13:25 UTC] No.42972251[source]▶
The wiki version thereof: https://wiki.haskell.org/Typeclassopedia.