[Haskell-cafe] Efficient and type safe flag sets

[Robert Dockins]

On Sunday 04 November 2007 04:15:45 pm Henning Thielemann wrote:
> We have
>   http://www.haskell.org/haskellwiki/EnumSet_EnumMap
>
> Is there also an efficient implementation for bit sets that fit into a
> machine word? This would be useful for foreign function interfaces.

http://www.eecs.tufts.edu/~rdocki01/docs/edison/Data-Edison-Coll-EnumSet.html