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ExtraTcsUntch.hs:23:18: error:
• Couldn't match expected type: F Int
with actual type: [p]
• In the first argument of ‘h’, namely ‘[x]’
In the expression: h [x]
In an equation for ‘g1’: g1 _ = h [x]
• Relevant bindings include
x :: p (bound at ExtraTcsUntch.hs:21:3)
f :: p -> ((), ((), ())) (bound at ExtraTcsUntch.hs:21:1)
ExtraTcsUntch.hs:25:38: error:
• Couldn't match expected type: F Int
with actual type: [[a0]]
The type variable ‘a0’ is ambiguous
• In the first argument of ‘h’, namely ‘[[undefined]]’
In the expression: h [[undefined]]
In the expression: (h [[undefined]], op x [y])
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