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elixir with else

Uncommon Nightingale answered on May 15, 2022 Popularity 9/10 Helpfulness 1/10

answer elixir with else

elixir with else

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defmodule SomeModule do
  require Logger

  @doc """
      iex> SomeModule.do_something("Richard")
      {:ok, "Message sent!"}

      iex> SomeModule.do_something("Jian")
      {:error, "Invalid phone number"}

      iex> SomeModule.do_something("Erlich")
      {:error, "Not found"}
  """
  def do_something(name) do
    with {:ok, phone_number} <- look_up(name),
         :sent <- send_text(phone_number) do
      {:ok, "Message sent!"}
    end
  end

  def do_something_and_log_error(name) do
    with {:ok, phone_number} <- look_up(name),
         :sent <- send_text(phone_number) do
      {:ok, "Message sent!"}
    else
      {:error, error_msg} = error ->
        Logger.error(error_msg)
        error
    end
  end

  defp look_up("Richard"), do: {:ok, "+15629998888"}
  defp look_up("Jian"), do: {:ok, "+864009999999"}
  defp look_up(_), do: {:error, "Not found"}

  defp send_text("+1" <> _phone_number), do: :sent
  defp send_text(_), do: {:error, "Invalid phone number"}
end

Popularity 9/10 Helpfulness 1/10 Language elixir

Source: Grepper

Tags: elixir

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Contributed on May 15 2022

Uncommon Nightingale

0 Answers Avg Quality 2/10

elixir with else

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