Count words in list of strings Haskell

Question

So i have to count every word in a list of strings in Haskell

Example:

Cwords ["one string random", "hello asd", "asd"] -> 6

This is how i tried:

Cwords :: [String] -> Int
Cwords = length . map words

Now it gives 3 for the same input

map f xs will always be a list with the same length as xs, no matter what function f is. — chi
– chi, Commented Nov 25, 2020 at 13:50

Aplet123 · Accepted Answer · 2020-11-25 13:34:53Z

4

For each element of the list, you want to find the length of the words, aka map (length . words). You'll then have an [Int] where each element is the length of the words in that element, so you want to sum it up:

cwords :: [String] -> Int
cwords = sum . map (length . words)

Note that functions must start with a lowercase letter.

answered Nov 25, 2020 at 13:34

Aplet123

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