You need a method that will find the length of a list:
length :: [a] -> Int
and a method that will applies a function to every element of a list
and make a list of the results:
map :: (a ->b) -> [a] -> [b]
Try and put them together.
hth,
-deech
On 4/10/10, boblettoj
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
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