Packages

funx

0.8.7
0.8.8 0.8.7 0.8.6 0.8.5 0.8.4 0.8.3 0.8.2 0.8.1 0.8.0 0.7.1 0.7.0 0.6.1 0.6.0 0.5.0 0.4.2 0.4.0 0.3.0 0.2.3 0.2.2 0.2.1 0.2.0 0.1.7 0.1.6 0.1.5 0.1.4 0.1.3

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

HexDocs

Current section

Files

Jump to
Readme
26 Versions
1 Dependency
Dependants
Files
Activity
funx lib predicate non_empty.ex
Raw

lib/predicate/non_empty.ex 

defmodule Funx.Predicate.NonEmpty do

  @moduledoc """

  Predicate that checks if a value is a non-empty list.



  Options



  None required.



  ## Examples



      use Funx.Predicate



      alias Funx.Predicate.NonEmpty



      # Check if tags is a non-empty list

      pred do

        check :tags, NonEmpty

      end



      # Combined with other predicates

      pred do

        check :items, NonEmpty

        check :items, {MaxLength, max: 10}

      end

  """



  @behaviour Funx.Predicate.Dsl.Behaviour



  @impl true

  def pred(_opts \\ []) do

    fn value -> is_list(value) && value != [] end

  end

end