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overloadedlistsfail01.hs:5:8:
No instance for (Show a0) arising from a use of ‘print’
The type variable ‘a0’ is ambiguous
Note: there are several potential instances:
instance Show Double -- Defined in ‘GHC.Float’
instance Show Float -- Defined in ‘GHC.Float’
instance Show () -- Defined in ‘GHC.Show’
...plus 22 others
In the expression: print [1]
In an equation for ‘main’: main = print [1]
overloadedlistsfail01.hs:5:14:
No instance for (GHC.Exts.IsList a0)
arising from an overloaded list
The type variable ‘a0’ is ambiguous
Note: there is a potential instance available:
instance GHC.Exts.IsList [a] -- Defined in ‘GHC.Exts’
In the first argument of ‘print’, namely ‘[1]’
In the expression: print [1]
In an equation for ‘main’: main = print [1]
overloadedlistsfail01.hs:5:15:
No instance for (Num (GHC.Exts.Item a0))
arising from the literal ‘1’
The type variable ‘a0’ is ambiguous
Note: there are several potential instances:
instance Num Double -- Defined in ‘GHC.Float’
instance Num Float -- Defined in ‘GHC.Float’
instance Num Int -- Defined in ‘GHC.Num’
...plus two others
In the expression: 1
In the first argument of ‘print’, namely ‘[1]’
In the expression: print [1]
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