tcfail071.hs:10: Couldn't match the signature/existential type variable
- `taEm' with the type `taEz -> taEw -> taEw'
- Expected: `taEm'
- Inferred: `taEz -> taEw -> taEw'
+ `taDJ' with the type `taDW -> taDT -> taDT'
+ Expected: `taDJ'
+ Inferred: `taDW -> taDT -> taDT'
In the first argument of `f', namely `c'
In the first argument of `foldr', namely `(f c)'
In a pattern binding: `p = foldr (f c) [] []'