+1

Much respect. I think this is clever to use a sigil, but I wouldn't call it best practices in Elixir. I like the typespec!

If the description says multiplyAll / multiply_all ( and it does ), a better solution would be to test for multiplyAll instead of solution.

The creativity thing has been raised as an Issue already ( three years ago O_O ); hopefully it gets fixed sometime ever.

I like this kata, but it has 3 misleading issues for Elixirists.

1. The example uses the multiplyAll function, but that is incorrect, it should be renamed to solution.
2. The Solution panel only displays a cute by misleading comment that reads ## left blank for unlimited creativity : ). However, you can't give the module nor function a creative name or the test wont work.
3. You have to read the test to figure out that your creative approach needs to be changed to name you Module Multiply_all and the function solution.

A better example for the Elixir version of this Kata would be

defmodule CurryFunctions do
  def multiply_all_by(list) do
    # code here
  end
end

That said, it loved seeing a curry kata in here! Much respect.

sweet

respect!