Niemeijer, R.A. wrote:
Today I happened to need a large list of prime numbers. Obviously this is a well-known problem, so I figured there would be something on Hackage that I could use. Surprisingly, there isn't, or if there is it's not easy to find.
Since it's such a common problem I'd say it would be a good idea to add a package to Hackage that exports
primes :: [Integer]
and hides the ugly implementation details.
+1 except that exporting the potentially infinite list of primes is problematic in that it may become a memory leak. I'd suggest to export two versions primes :: [Integer] primes' :: () -> [Integer] for casual (i.e. throwaway program to solve a Project Euler problem) and for memory aware use respectively. Regards, apfelmus -- http://apfelmus.nfshost.com