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T11947a.hs:4:19: error: [GHC-39999]
• Could not deduce ‘RealFloat a0’
from the context: RealFloat a
bound by the type signature for:
theFloatDigits :: forall a. RealFloat a => Int
at T11947a.hs:4:19-46
The type variable ‘a0’ is ambiguous
Potentially matching instances:
instance RealFloat Double -- Defined in ‘GHC.Float’
instance RealFloat Float -- Defined in ‘GHC.Float’
• In the ambiguity check for ‘theFloatDigits’
To defer the ambiguity check to use sites, enable AllowAmbiguousTypes
In the type signature:
theFloatDigits :: forall a. RealFloat a => Int
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