+1; it's obviously the packing that causes sloth. Memoize the "pack "\t"" etc. stuff , and write bytestring replacements for show for your data. I guess you can use the Put monad instead of B.concat for that, by the way.
2009/2/9 Bulat Ziganshin <bulat.zigans...@gmail.com>: > Hello Ketil, > > Monday, February 9, 2009, 2:49:05 PM, you wrote: > >> in B.concat [f1,pack "\t",pack (show f2),...] > >> inelegance were it only fast - but this ends up taking the better part >> of the execution time. > > i'm not a BS expert but it seems that you produce Strings using show > and then convert them to BS. of course this is inefficient - you need > to replace show with BS analog > > -- > Best regards, > Bulat mailto:bulat.zigans...@gmail.com > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
