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Functional programming abstractions for Elixir (Beta release: APIs may change before 1.0)

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funx lib predicate boolean.ex
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lib/predicate/boolean.ex 

defmodule Funx.Predicate.Boolean do

  @moduledoc """

  Predicate that checks if a value is a boolean (true or false).



  Options



  None required.



  ## Examples



      use Funx.Predicate



      alias Funx.Predicate.Boolean



      # Check if active is a boolean

      pred do

        check :active, Boolean

      end



      # Combined with other predicates

      pred do

        check :enabled, Boolean

        check :enabled, IsTrue

      end

  """



  @behaviour Funx.Predicate.Dsl.Behaviour



  @impl true

  def pred(_opts \\ []) do

    fn value -> is_boolean(value) end

  end

end