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T10045.hs:6:18: error:
• Found type wildcard ‘_’ standing for ‘t1 -> Bool -> t2’
Where: ‘t1’ is a rigid type variable bound by
the inferred type of copy :: t1 -> Bool -> t2 at T10045.hs:7:10-34
‘t2’ is a rigid type variable bound by
the inferred type of copy :: t1 -> Bool -> t2 at T10045.hs:7:10-34
To use the inferred type, enable PartialTypeSignatures
• In the type signature: copy :: _
In the expression:
let
copy :: _
copy w from = copy w True
in copy ws1 False
In an equation for ‘foo’:
foo (Meta ws1)
= let
copy :: _
copy w from = copy w True
in copy ws1 False
• Relevant bindings include
ws1 :: () (bound at T10045.hs:5:11)
foo :: Meta -> t (bound at T10045.hs:5:1)
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