Hi.how can i reduce list with foldl.r ? np (1,1,1,2,3,3,4,5,5) -> (1,2,3,4,5) ??? Azz. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://www.haskell.org/pipermail/beginners/attachments/20090622/4c62f380/attachment.html