# Quick check if Elixir uses structural equivalence when comparing structs
# Created: Oct 2022  gtowell
defmodule Aaa do
  @moduledoc """
  Just define a minimal struct within the module
  """
  defstruct qq: 0
end

defmodule Bbb do
  @moduledoc """
  Just define a struct within this module such that
  the struct in Bbb is exactly identical to the one in Aaa
  """
  defstruct qq: 0
end

defmodule Test do
  def main do
    aa=%Aaa{qq: 1}
    bb=%Bbb{qq: 1}
    IO.puts("Structural equivalence between Aaa and Bbb #{aa==bb}")
    aaSame=%Aaa{qq: 1}
    IO.puts("Two things of same type and contents       #{aa==aaSame}")
    aaCopy=aa
    IO.puts("Two things where one is copy of other      #{aa==aaCopy}")
    aaDiff = %Aaa{qq: 2}
    IO.puts("Two things same type, different content    #{aa==aaDiff}")
  end
end

Test.main