How to override Show instance of some basic types in Haskell?

Question

I\'m writting some programs in Haskell, dealing with a lot of basic types like Word32/Word64 etc.. I use ghci to test the functions frequently, see the results in terminal.<

Answer 1

That would be abusing the Show instance. It's not really meant for formatting. If you want to show something in hexadecimal, just use a function to do the conversion. For example, you can use showHex from Numeric to make a small helper like this:

> import Numeric
Numeric> let hex x = showHex x ""
Numeric> hex 123456
"1e240"