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Change fmap to (.)

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This commit is contained in:
Danila Fedorin 2020-10-07 16:12:14 -07:00
parent 26d7927c35
commit 8a4f83ec37
1 changed files with 1 additions and 1 deletions
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HW2.fedorind.hs
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@ -95,4 +95,4 @@ neg = fold' (Lit . negate) Add (Mul . neg) -- Not efficient, but short :^)
-- >>> eval (sub e2 e1) -- >>> eval (sub e2 e1)
-- 51 -- 51
-- --
sub = fmap (. neg) Add -- (a -> b) is a Functor sub = (. neg) . Add -- (a -> b) is a Functor