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tcfail192.hs:8:13:
No instance for (Num [[Char]])
arising from the literal `1'
Possible fix: add an instance declaration for (Num [[Char]])
In the second argument of `(+)', namely `1'
In the expression: x + 1
In the expression:
[x + 1 | x <- ["Hello", "World"], then group using take 5]
tcfail192.hs:10:26:
Couldn't match type `a' with `[a]'
`a' is a rigid type variable bound by
a type expected by the context: [a] -> [[a]] at tcfail192.hs:10:9
Expected type: [a] -> [[a]]
Actual type: [a] -> [a]
In the return type of a call of `take'
In the expression: take 5
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