shithub: MicroHs

ref: 9a777dd4c3dfbb22fde0afee15cba74a48a13b4f
dir: /Tools/Count.hs/

View raw version 
import System.Environment
import Data.List

main = do
  [pat, fn] <- getArgs
  file <- readFile fn
  let n = length $ filter (isPrefixOf pat) (tails file)
  print n