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<interactive>:11:1:
No instance for (Show a1) arising from a use of ‘print’
Cannot resolve unknown runtime type ‘a1’
Use :print or :force to determine these types
Relevant bindings include it :: a1 (bound at <interactive>:11:1)
Note: there are several potential instances:
instance Show TyCon -- Defined in ‘Data.Typeable.Internal’
instance Show TypeRep -- Defined in ‘Data.Typeable.Internal’
instance Show a => Show (Maybe a) -- Defined in ‘GHC.Show’
...plus 30 others
In a stmt of an interactive GHCi command: print it
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