shithub: MicroHs

ref: 05c1186d2d7870099e509fd4623e69dbbaf9b0df
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