Re: Binning k-mers, open file handle question

[David Powell]

As Bob pointed out the problem is reopening your files.

Your fileHandles is of type
  fileHandles :: Map.Map [Char] (IO Handle)
It should be
  fileHandles :: Map.Map [Char] Handle


Something like this should fix it:
  fileHandles <- Map.fromList `fmap` mapM (\x -> do h <- openFile ("out/"
++ x) WriteMode
                                                    return (x,h)) allMers



Cheers,

-- David