Zhbanov Pavel wrote: > Now I understand that it's just a lack of knowledge... Sorry for > interrupring... > > By the way, can you recommend a good manual which I can find on the web? Tutorial: http://www.haskell.org/tutorial/ Reference Manual: http://www.haskell.org/definition/ Further Information: http://www.haskell.org/bookshelf/ -- Glynn Clements <glynn.clements@virgin.net>