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fun_with_flags

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FunWithFlags, a flexible and fast feature toggle library for Elixir.

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fun_with_flags lib fun_with_flags.ex
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lib/fun_with_flags.ex 

defmodule FunWithFlags do

  @moduledoc """

  FunWithFlags, the Elixir feature flag library.

  """



  @store FunWithFlags.Config.store_module



  @doc """

  Checks if a flag is enabled.



  ## Examples



      iex> FunWithFlags.enabled?(:new_homepage)

      false

  """

  @spec enabled?(atom) :: boolean

  def enabled?(flag_name) when is_atom(flag_name) do

    @store.lookup(flag_name)

  end







  @doc """

  Enables a feature flag.



  ## Examples



      iex> FunWithFlags.enabled?(:super_shrink_ray)

      false

      iex> FunWithFlags.enable(:super_shrink_ray)

      {:ok, true}

      iex> FunWithFlags.enabled?(:super_shrink_ray)

      true



  """

  @spec enable(atom) :: {:ok, true}

  def enable(flag_name) when is_atom(flag_name) do

    @store.put(flag_name, true)

  end







  @doc """

  Disables a feature flag.



  ## Examples



      iex> FunWithFlags.enable(:random_koala_gifs)

      iex> FunWithFlags.enabled?(:random_koala_gifs)

      true

      iex> FunWithFlags.disable(:random_koala_gifs)

      {:ok, false}

      iex> FunWithFlags.enabled?(:random_koala_gifs)

      false



  """

  @spec disable(atom) :: {:ok, false}

  def disable(flag_name) when is_atom(flag_name) do

    @store.put(flag_name, false)

  end



end