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Update Profunctors.md

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`fmap` for `((->) r)` is `(.)`, not `flip (.)`
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Vaibhav Sagar 2017-10-07 14:08:57 +08:00 committed by GitHub
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Profunctors.md
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@ -26,7 +26,7 @@ result type:
```haskell
instance Functor ((->) r) where
fmap f g = g . f
fmap f g = f . g
```
Contravariant functors are pretty much like functors, but they require a