gistfile1.txt

defmodule TypeiTest do
  use ExUnit.Case
  doctest Typei

 # declare type that is made up of other types
  @type payment :: %Payment{ # Payment is a ...? Record?? Struct??)
			invalid_at       :: DateTime.t, # DateTime specifically tied to ... ? Module??
			admin_removed_at :: DateTime.t,
 			removed_at       :: DateTime.t,
			ready_at         :: DateTime.t,
			payout_at        :: DateTime.t,
			created_at       :: DateTime.t,
			id               :: number  # float or int (vague)			
	}




  test "the truth" do
        payment = %Payment{} # need to make empty by using ... ? %Payment{}??
	payment.last_event = "ready"
    	assert payment.last_event = "ready"
  end
end

What is the correct syntax for declaring a type?