Elixir - Language List - Fixed a shallow test

[lucavenir]

The tests as of now let the following solution pass:

defmodule LanguageList do
  def new(), do: []
  def add(list, language), do: [language | list]
  def remove([_ | others]), do: others
  def first([head | _]), do: head
  def count([]), do: 0
  def count([_ | others]), do: count(others) + 1
  def functional_list?([]), do: false
  def functional_list?(["Elixir" | []]), do: true
  def functional_list?([_ | others]), do: functional_list?(others)
end

But it shouldn't, as the above pattern

def functional_list?(["Elixir" | []]), do: true

only works if "Elixir" is the last one in the list.

The error lies in the empty list [] being matched, instead of a generic _ wildcard).

[github-actions]

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[angelikatyborska]

Thank you!