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mc24.hs:10:31: error:
• Couldn't match type ‘[a0]’ with ‘[a] -> m [a]’
Expected type: (a -> Integer) -> [a] -> m [a]
Actual type: [a0] -> [a0]
• Possible cause: ‘take’ is applied to too many arguments
In the expression: take 2
In a stmt of a monad comprehension: then group by x using take 2
In the expression:
[GHC.List.length x | x <- [1 .. 10], then group by x using take 2]
• Relevant bindings include foo :: m Int (bound at mc24.hs:8:1)
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