Extends an Elixir stateful object

Docs at https://hexdocs.pm/extends/

You define a base module (like, your base class)

defmodule BaseAdder do
   def sum(a, b) do
      a + b
   end
end

And then do a new class:

defmodule Adder do
   use Extends, module: BaseAdder   

   def diff(a, b) do
      a - b
   end
end

Where you can do:

Adder.add( 1, 2)
3

Adder.diff(3, 1)
2

• mix test
• mix format
• mix credo
• update version
• update changelog
• git push
• mix hex.publish

• https://blog.appsignal.com/2021/10/26/how-to-use-macros-in-elixir.html
• https://elixir-lang.org/getting-started/meta/macros.html
• https://github.com/hrzndhrn/beam_file