Re: [Haskell-cafe] How to deal with huge text file?

On Tuesday 25 May 2010 08:14:13, Ivan Miljenovic wrote:

On 25 May 2010 16:12, Magicloud Magiclouds

wrote:

...

Yes, this code works with a little hack. Thank you.

I'm scared to ask: what pray tell is this little hack?

Looking at it again, probably making it work at all, because I never consumed the "Log for " lines, so produced an infinite list of empty lists :-/ Something like separateOutput :: String -> [[String]] separateOutput file =     let contents = dropWhile (not . ("Log for " `isPrefixOf`)) $ lines file split [] = ([],[])         split (h:tl) = let (lg,rst) = break ("Log for " `isPrefixOf`) tl in (h:lg,rst)         msplit [] = Nothing         msplit lns = Just (split lns)     in unfoldr msplit contents which really works :)