In page 166 the authors present the following code (specs added by me):
@spec start_quiz(Quiz.t, DateTime.t) :: reference
def start_quiz(quiz, now) do
Logger.info("starting quiz #{quiz.fields.title}...")
QuizManager.build_quiz(quiz.fields)
Enum.each(quiz.templates, &add_template(quiz, &1))
timeout = DateTime.diff(quiz.end_at, now, :millisecond)
Process.send_after(self(), {:end_quiz, quiz.fields.title}, timeout)
end
This code is supposed to go on the file Mastery.Boundary.Proctor. However such code won’t compile, even after I finished the section, the reason being add_template is not defined:
== Compilation error in file lib/mastery/boundary/proctor.ex ==
** (CompileError) lib/mastery/boundary/proctor.ex:32: undefined function add_template/2
(elixir) src/elixir_locals.erl:108: :elixir_locals."-ensure_no_undefined_local/3-lc$^0/1-0-"/2
(elixir) src/elixir_locals.erl:109: anonymous fn/3 in :elixir_locals.ensure_no_undefined_local/3
(stdlib) erl_eval.erl:680: :erl_eval.do_apply/6
Shouldn’t it not be Enum.each(quiz.templates, Quiz.add_template(quiz, &1)) instead?
I have re-read the proctor section several times now and I can’t find the page where this function is. I have to be missing something!
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Also, the book mentions this is the file Workers/lib/mastery/bonudary/proctor.ex. Shouldn’t it not be Mastery/lib.... instead?
Would appreciate any possible guidance, I am kinda lost in this section :S
