你可以用更具体的类型定义你自己的操作符。或者你可以使用更具体的类型来重新定义（^）运算符，如下所示：

  $ b $（^）:: Num a => code> import Prelude hiding（（^））
 import qualified Prelude a  - > Int  - > a 
（^）=（Prelude。^）

x :: Int 
x = 2 ^ 3 

I use (^) :: (Num a, Integral b) => a -> b -> a a lot to define constant factors or sizes. Problem is that GHC complains about defaulting to Integer.

Now I know why this happens ... and I know that I can "just" write (x^(y::Int)) to get rid of the warning. But that looks just "ugly". Otoh living with the warnings is also not a great option.

Same thing applies for (^^) :: (Integral b, Fractional a) => a -> b -> a and (**) :: Floating a => a -> a -> a is not usable to me.

Anyone has a nice solution to this (first world) problem?

edit

Just found this gem of code:

alignment a = 2 ^ ceiling (logBase 2 (fromIntegral (sizeOf a)))

This is one LOC and GHC complains about defaulting to Integer and Double on the same line.

You could define your own operator with a more specific type. Or you could redefine the (^) operator with a more specific type, like this:

import Prelude hiding ((^))
import qualified Prelude ((^))

(^) :: Num a => a -> Int -> a
(^) = (Prelude.^)

x :: Int
x = 2^3