Hi, I want to create an immutable array like this In .hs file e = [1,2,3] a = array [1,3] [(i,v) | i<-[1..3], v<-e] I expect the output to be "array (1,3) [(1,1),(2,2),(3,3)]" But I got "array (1,3) [(1,3),(2,3),(3,3)]" Why is that? Can anyone tell me how to get the output that I expect? Thanks a lot, cchang