On Sun, Oct 18, 2009 at 8:01 AM, Alexander Dunlap <alexander.dunlap@gmail.com> wrote:

The way I would count all of the lines in a file is (untested)

fCountLines :: String -> IO Int
fCountLines = length . lines . readFile

I'm not sure if I did something wrong, but I could not get this to work because 'readFile' returns an IO String. I tried the following and it worked.

fileLines str = readFile str >>= return . lines >>= return . length

Is this a reasonable way to count lines?