shithub: MicroHs

ref: 62044b52839f697afc20b623eb296488c02eaead
dir: /Tools/Count.hs/

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import System.Environment
import Data.List

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