Hello robert, Sunday, August 19, 2007, 6:52:59 PM, you wrote: > I defined > newMem s = newIOArray (0, size-1) 0 > and then > x = newMem 30 i recommend you to read http://haskell.org/haskellwiki/IO_inside -- Best regards, Bulat mailto:Bulat.Ziganshin at gmail.com