>>12$ ghci
GHCi, version 7.6.3: http://www.haskell.org/ghc/ ; :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Prelude> 11 >> 1
<interactive>:2:1:
No instance for (Num (m0 a0)) arising from the literal `11'
The type variables `m0', `a0' are ambiguous
Possible fix: add a type signature that fixes these type variable(s)
Note: there is a potential instance available:
instance Integral a => Num (GHC.Real.Ratio a)
-- Defined in `GHC.Real'
Possible fix: add an instance declaration for (Num (m0 a0))
In the first argument of `(>>)', namely `11'
In the expression: 11 >> 1
In an equation for `it': it = 11 >> 1
<interactive>:2:4:
No instance for (Monad m0) arising from a use of `>>'
The type variable `m0' is ambiguous
Possible fix: add a type signature that fixes these type variable(s)
Note: there are several potential instances:
instance Monad ((->) r) -- Defined in `GHC.Base'
instance Monad IO -- Defined in `GHC.Base'
instance Monad [] -- Defined in `GHC.Base'
...plus two others
In the expression: 11 >> 1
In an equation for `it': it = 11 >> 1
<interactive>:2:7:
No instance for (Num (m0 b0)) arising from the literal `1'
The type variables `m0', `b0' are ambiguous
Possible fix: add a type signature that fixes these type variable(s)
Note: there is a potential instance available:
instance Integral a => Num (GHC.Real.Ratio a)
-- Defined in `GHC.Real'
Possible fix: add an instance declaration for (Num (m0 b0))
In the second argument of `(>>)', namely `1'
In the expression: 11 >> 1
In an equation for `it': it = 11 >> 1
