CODEWITHSUNDEEP
elixirmetaprogramming
Alex Antonov
Alex Antonov

Reputation: 15146

How could I see all module's imported & defined functions in elixir?

I have module

defmodule There do
  import Othermodule, only: [a: 1]

  def b do
  end
end

How could I get the list of functions a & b?

Upvotes: 5

Views: 392

Answers (1)

nietaki
nietaki

Reputation: 9010

You can use the __ENV__ macro combined with Module.__info__(:functions) mentioned by Dogbert:

my_functions = __MODULE__.__info__(:functions)
imported_functions = __ENV__.functions
  |> Enum.filter(fn {module, _functions} -> module != Kernel end)
  |> Enum.map(&elem(&1, 1))
  |> List.flatten

(my_functions ++ imported_functions)
  |> Enum.map(&elem(&1, 0))
  |> inspect
  |> IO.puts

If you remove the last Enum.map you'll get a Keyword List of {function_name, function_arity}.

Upvotes: 5

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