在elixir中没有全局变量。如何从一个函数中获取变量并在另一个函数中使用它？

defmodule ExampleModule do
  def start do
    initial_state = 0
    another_function(initial_state)
  end

  def another_function(state) do
    updated_state = state + 1
    yet_another_function(updated_state)
  end

  def yet_another_function(state) do
    IO.puts "State: #{state}"
  end
end

defmodule ExampleModule do
  def start do
    initial_state = 0
    updated_state = another_function(initial_state)
    yet_another_function(updated_state)
  end

  def another_function(state) do
    updated_state = state + 1
    updated_state
  end

  def yet_another_function(state) do
    IO.puts "State: #{state}"
  end
end