shithub: MicroHs

ref: cfd47722e3147d6ac70239ac5209947a12cd21a5
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