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mc25.hs:9:15:
No instance for (Enum t0)
arising from the arithmetic sequence `1 .. 10'
The type variable `t0' is ambiguous
Possible fix: add a type signature that fixes these type variable(s)
In a stmt of a monad comprehension: x <- [1 .. 10]
In a stmt of a monad comprehension: then group by x using take
In the expression: [x | x <- [1 .. 10], then group by x using take]
mc25.hs:9:16:
No instance for (Num t0)
arising from the literal `1'
The type variable `t0' is ambiguous
Possible fix: add a type signature that fixes these type variable(s)
In the expression: 1
In a stmt of a monad comprehension: x <- [1 .. 10]
In a stmt of a monad comprehension: then group by x using take
mc25.hs:9:24:
No instance for (Functor t1)
arising from a use of `fmap'
The type variable `t1' is ambiguous
Possible fix: add a type signature that fixes these type variable(s)
In the expression: fmap
In a stmt of a monad comprehension: then group by x using take
In the expression: [x | x <- [1 .. 10], then group by x using take]
mc25.hs:9:46:
Couldn't match type `Int' with `a -> t0'
Expected type: (a -> t0) -> [a] -> [t1 a]
Actual type: Int -> [a] -> [a]
In the expression: take
In a stmt of a monad comprehension: then group by x using take
In the expression: [x | x <- [1 .. 10], then group by x using take]
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