More specifically, how do I generate a new list of every Nth element from an existing infinite list?
E.g. if the list is [5, 3, 0, 1, 8, 0, 3, 4, 0, 93, 211, 0
An uglier, and more limited version of the accepted answer
every :: Eq a => Int -> [a] -> [a]
every n xs = if rest == []
then []
else head rest : every n (tail rest)
where rest = drop (n-1) xs
For "line golfing" it can be written like this:
every n xs = if rest == [] then [] else head rest : every n (tail rest)
where rest = drop (n-1) xs
(It's more limited because it has an unnecessary Eq a constraint.)