is'nt it possible, to write it in one line without any nested functions in WHERE? If it's possible I'd prefer that... any idea? Thanks -- View this message in context: http://haskell.1045720.n5.nabble.com/list-comprehension-doesn-t-work-tp5730158p5730170.html Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.