Ball

FSharp - OCaml based .NET functional first multi-paradigm language

It's open sourced and doesn't need Visual Studio, but, even that should be free.

http://fsharp.org/

Language site. Great starting point to beginning information.

• How to install and start with FSharp on Windows
• Ways to learn FSharp

Ball

defmodule SomeTest do
  use ExUnit.Case
  
    def some_function(%{arg1: "thing", arg3: _}) do
        :two
    end
    def some_function(%{arg1: "thing", arg2: _}) do
        :one
    end
    def some_function(_) do