Hallo David,
If I understood what you ask this time, there's a function in Control.Monad that does it : allN = replicateM
replicateM 4 [ 1,2,3 ] = [ [ 1,1,1,1],[1,1,1,2], ....
that is exactly what I wanted, thanks a lot. Next time I will state the question more clearly :-)
when you write
a <- ls b <- ls c <- ls
You perform the monad "action" 3 times, collecting the result in a then b, then c. now replicateM performs a monad action n times, collecting the result in a list. turns out that making a list of the result is exactly what you want.
Maybe I should have a closer look at Control.Monad, a lot seems to be there already. best regards, Matthias -- __________________________________________________________ ___ __ __ Dipl. Inf. Matthias Guedemann / __\/ _\ /__\ Computer Systems in Engineering / / \ \ /_\ Otto-von-Guericke Universitaet Magdeburg / /___ _\ \//__ Tel.: 0391 / 67-19359 \____/ \__/\__/ __________________________________________________________