But in Flix you can write:

  def main(): Unit \ IO = 
      Map.empty() |>
      Map.insert("Hello", "World") |>
      Map.get("Hello") |>
      println

So I am not sure what you mean? In general, if you like pipelines then you want the "subject" (here the map) to be the last argument. That is how it is in Flix.