Danny Gratzer wrote
Well you've deleted the portion of the code referring to x and y.
listPairs = [(a*b, y) | y <- [0..], a <- [0..], b <- [0..], (a*b) > 5, (a*b) < 500, (y*y) < 1001, mod y (a*b) == 0]
This will still never terminate however.
oh I see, but as you say it doesn't terminate and I get nothing. Does it mean, that the function is wrong in this place? Some questions: 1. Does the order of conditions affect the result at all? 2. The "," means AND or &&, right? So how do you write OR || instead? E.g z<-[1..10] OR z<-[100..110]. Ofcourse it doesn't relate to this topic, but I wanted to know it. Since I'm a very beginner I think the approach of Daniel is slightly complex for me to comprehend, right? Allthough I tried it, but it says isProduct and isSquer are not in Scope, so I should define them first in WHERE-Clause right? Thanks again to all -- View this message in context: http://haskell.1045720.n5.nabble.com/list-comprehension-doesn-t-work-tp57301... Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.