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tcfail104.hs:14:12: error:
• Couldn't match type ‘forall a. a -> a’ with ‘Char -> Char’
Expected type: (Char -> Char) -> Char -> Char
Actual type: (forall a. a -> a) -> Char -> Char
• In the expression: \ (x :: forall a. a -> a) -> x
In the expression:
if v then (\ (x :: forall a. a -> a) -> x) else (\ x -> x)
In the expression:
(if v then (\ (x :: forall a. a -> a) -> x) else (\ x -> x)) id 'c'
tcfail104.hs:22:15: error:
• Couldn't match expected type ‘Char -> Char’
with actual type ‘forall a. a -> a’
• When checking that the pattern signature: forall a. a -> a
fits the type of its context: Char -> Char
In the pattern: x :: forall a. a -> a
In the expression: \ (x :: forall a. a -> a) -> x
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