[gotchange]

    $ (1..10) |> Enum.map(&(&1**&1)) |> Enum.filter(&(&1 < 40))

This is the equivalent of this piping op done in terse style JS:

    [for (i of Array(10).keys()) ++i].map(e=> e*e ).filter(e=> e<40 )

This is not as concise as the example you provided but it's still very neat and powerful.

[oinksoft]

Are list comprehensions still part of ES7? It's strange that Babel removed the list comprehension transformer recently, but I haven't been following closely.

The Elixir pipe syntax is reminiscent of Clojure's ->/->>:

  (->> (range 1 10)
       (map #(* % %))
       (filter (partial > 40)))

It's nice that in languages like Haskell or ML this is trivial:

  infix |> 
  fun (a |> b) = a b

You could modify this to let NONE fall through, etc.

[lectrick]

Wouldn't it be "fun (a |> b) = b a"? (call b on result of argument a)?

[oinksoft]

Oops, that's right.

[gotchange]

Last time I checked no, but it's been supported in FF for quite some time now.