chad.scherrer: > Hello cafe, > > I've hit a bit of a monadic snag here... > > I'm scanning a big file, building a table of statistics. I end up with > something like > > IO (IntMap (IOUArray Int Double)) > > Once I've read in the whole file and built my statistics, I don't need > any more updates, so I'd like to do something like > > IntMap (IOUArray Int Double) -> IO (IntMap (UArray Int Double)), > > using unsafeFreeze. I'm getting stuck here, since the IntMap library > is not so monad-friendly.
Hmm. So you'd need to construct a new IntMap, made by fmap'ping unsafeFreeze over each element of the old map. -- Don _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
