That doesn’t sound like the correct reading to me, because foldMap and foldl/fol... | Hacker News

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		MaxGabriel on March 21, 2020 \| parent \| context \| favorite \| on: It never makes sense to use foldl on lists in Hask... That doesn’t sound like the correct reading to me, because foldMap and foldl/foldr have different type signatures https://www.stackage.org/haddock/lts-15.4/base-4.13.0.0/Prel...

im3w1l on March 21, 2020 [–]

Yeah, but they solve basically the same problem.

As I mentioned, foldMap requires associativity. Per your link I guess it also requires existence of a neutral element (whereas foldr instead makes you specify a starting element).

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