Re: Word is not an instance of Bits

Malcolm Wallace <[email protected]> Mon, 29 Nov 2004 14:19:32 +0000

Newsgroups	gmane.comp.lang.haskell.nhc.bugs
Organization	Dept of Computer Science, University of York
Message-ID	<[email protected]>

Hi Daan,

> I am trying to compile DData with nhc98, but
> unfortunately, the Word type is not an instance
> of the Bits class, so I find myself unable to
> do an unsigned shiftR operation on them...

An unfortunate omission in 1.16, which has long been fixed in CVS.
The forthcoming 1.18 release will have "type Word = Word32" and
"instance Bits Word32", available by importing either of these:

    import Data.Word 
    import Foreign

Regards,
    Malcolm