defmodule Prelude.Atom do
  @moduledoc "Functions operating on `atoms`."

  @doc """
  Converts atoms to strings, leaving existing strings alone.

  Example:

      iex> Prelude.Atom.to_string("string")
      "string"

      iex> Prelude.Atom.to_string(:atom)
      "atom"
  """
  def to_string(x) when is_atom(x), do: Atom.to_string(x)
  def to_string(x) when is_binary(x), do: x

end