someMethod :: [[a]] -> [Int] someMethod = map length There's a list, haskell-beginners better suited for this kind of question.
Alex On Saturday 10 April 2010 18:02:37 boblettoj wrote: > Hi i want to know if there is any method i can use to count the number of > items in each list in a list of lists, eg. > > someMethod [[a, b, c], [a], [b, d, e, f]] > would return [3, 1, 4] > > is there anything that can do this? > thanks _______________________________________________ Haskell-Cafe mailing list [email protected] http://www.haskell.org/mailman/listinfo/haskell-cafe
