{* without flow operator
file.glob :./src/**/*.rs $>
  list.map file.read $>
  list.map (fn [c] string.lines c $> list.len) $>
  list.sum $>
  print
*}

file.glob :./src/**/*.rs $>
  list.map (file.read #> string.lines #> list.len) $>
  list.sum $>
  print

