Created
June 29, 2017 19:15
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Prelude> (fmap . const) 1 [1..5] | |
[1,1,1,1,1] | |
Prelude> fmap . const 1 [1..5] | |
<interactive>:29:1: error: | |
• Non type-variable argument in the constraint: Num (a1 -> a -> b) | |
(Use FlexibleContexts to permit this) | |
• When checking the inferred type | |
it :: forall b a (f :: * -> *) a1. | |
(Num (a1 -> a -> b), Functor f) => | |
a1 -> f a -> f b |
Author
swuecho
commented
Jun 29, 2017
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