Luke Palmer wrote: > I believe you can get what you want using the diagonal function from > Control.Monad.Omega. > > product xs ys = [ [ (x,y) | y <- ys ] | x <- xs ] > diag2 xs ys = diagonal (product xs ys) > > I think if you separate taking the cartesian product and flattening > it, like this, you might have an easier time wrangling all the > different variants you want.
Note that Control.Monad.Omega is not a monad. The law of associativity is broken, at least in a direct sense. Regards, apfelmus -- http://apfelmus.nfshost.com _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
