A typeclass for byte operations?

[Don Stewart]

dons:
> Hey guys,
> 
> At work we have many and varied needs to do bytewise operations on
> Haskell data. Things like:
>     
>     toBigEndian
>     rotateBytes
> 
> etc.
> 
> Has anyone thought about:
>     
>     * A "Bytes" class, like the Bits class? Providing standard
>     operations on values treated as bytes?
> 
>     * An Endian class, a la fromIntegral, for flipping bytes into a
>     particular endianness.
> 

I found 

    http://hackage.haskell.org/packages/archive/byteorder/1.0.0/doc/html/System-ByteOrder.html

    http://hackage.haskell.org/cgi-bin/hackage-scripts/package/byteorder-1.0.0

On Hackage. which does a few things in this area.