Ah, I understand what you mean now. You are looking indeed for the thrush operator. I think it should be built into Scala's standard library, but until that happens, you can use the mouse library or build it yourself. Here is an example:

    // Need to define this once somewhere in your project
    implicit class TrushExtension[A](anything: A) {
      def |>[B](function: A => B) = function(anything)
    }
    
    
    // Your application code
    def fun(arr: Iterable[Int]) = arr.map(_.toDouble / Math.PI)
    
    val arr = 0 to 100
    val newArr = arr.map(_*2) |> fun
    
    newArr.foreach(println)  // prints 0, 0.63662, 1.27324, ...

Execute or change the code here: https://scalafiddle.io/sf/WAKhZtJ/0

This is maybe not exactly as convenient, but it comes pretty close.

"someA.someB.someC" becomes "someA |> someB |> someC".