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T5380.hs:7:27: error:
• Couldn't match expected type ‘Bool’ with actual type ‘not_bool’
‘not_bool’ is a rigid type variable bound by
the type signature for:
testB :: forall not_bool not_unit.
not_bool -> (() -> ()) -> () -> not_unit
at T5380.hs:6:1-49
• In the expression: b
In the expression: proc () -> if b then f -< () else f -< ()
In an equation for ‘testB’:
testB b f = proc () -> if b then f -< () else f -< ()
• Relevant bindings include
b :: not_bool (bound at T5380.hs:7:7)
testB :: not_bool -> (() -> ()) -> () -> not_unit
(bound at T5380.hs:7:1)
T5380.hs:7:34: error:
• Couldn't match type ‘not_unit’ with ‘()’
‘not_unit’ is a rigid type variable bound by
the type signature for:
testB :: forall not_bool not_unit.
not_bool -> (() -> ()) -> () -> not_unit
at T5380.hs:6:1-49
Expected type: () -> not_unit
Actual type: () -> ()
• In the expression: f
In the command: f -< ()
In the expression: proc () -> if b then f -< () else f -< ()
• Relevant bindings include
testB :: not_bool -> (() -> ()) -> () -> not_unit
(bound at T5380.hs:7:1)
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