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TYPE SIGNATURES
somethingShowable :: Show Bool => Bool -> String
TYPE CONSTRUCTORS
COERCION AXIOMS
Dependent modules: []
Dependent packages: [base-4.12.0.0, ghc-prim-0.5.2.1,
integer-gmp-1.0.2.0]
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 for inner bindings fragile;
either use MonoLocalBinds, or simplify it using the instance
• When checking the inferred type
somethingShowable :: Show Bool => Bool -> String
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