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tuukkah
on May 15, 2018
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Professor Frisby's Mostly Adequate Guide to Functi...
Functors have fmap. Pointeds have pure. Monads have fmap, pure and join/flatten. So what's missing from "functors that can flatten" is pure, and monads are more precisely "pointed functors that can flatten".
This is the canonical source:
https://wiki.haskell.org/Typeclassopedia
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This is the canonical source: https://wiki.haskell.org/Typeclassopedia