shithub: MicroHs

ref: 0e0fb3a05f851c0485a4ddd5ba7cdc6ddb9e87f9
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