Programming Elixir ≥ 1.6

Transformation: Take First n Items

Our next transformation is to extract the first count entries from the list. Resisting the temptation to write the function ourselves (How would you write such a function?), we discover the built-in Enum.take:

  def process({user, project, count}) do
    Issues.GithubIssues.fetch(user, project)
    |> decode_response()
    |> sort_into_descending_order()
    |> last(count)
  end

  def last(list, count) do
    list
    |> Enum.take(count)
    |> Enum.reverse
  end