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TYPE SIGNATURES
somethingShowable :: Show Bool => Bool -> String
TYPE CONSTRUCTORS
COERCION AXIOMS
Dependent modules: []
Dependent packages: [base-4.9.0.0, ghc-prim-0.5.0.0,
integer-gmp-1.0.0.1]
SomethingShowable.hs:5:1: warning: [-Wsimplifiable-class-constraints (in -Wdefault)]
The constraint ‘Show Bool’ matches an instance declaration
instance Show Bool -- Defined in ‘GHC.Show’
This makes type inference very fragile;
try simplifying it using the instance
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