title: How do I define the spec of an elixir function that has an unused parameters?
body: <pre><code>@spec another(String.t, String.t) :: String.t 
  def another(_para1, _para2) do
    IO.puts "this is a test"
  end
  </code></pre>
  
  <p>can i define the type of the parameters of the function this way even though the parameters are not used in the body of the function?</p>