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bifoldable doesn't include tests for bifoldl #70

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sjakobi opened this issue May 5, 2022 · 0 comments
Open

bifoldable doesn't include tests for bifoldl #70

sjakobi opened this issue May 5, 2022 · 0 comments

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@sjakobi
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sjakobi commented May 5, 2022

Maybe we can relate it to bifoldr via this toEitherList function from the documented Bifoldable laws:

bifoldr f g z ≡ foldr (either f g) z . toEitherList

bifoldl f g z ≡ foldl (acc -> either (f acc) (g acc)) z . toEitherList

For reference: bifoldable was added in #62

(CC @solomon-b)
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