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

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funx lib validator integer.ex
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lib/validator/integer.ex 

defmodule Funx.Validator.Integer do

  @moduledoc """

  Validates that a value is an integer.



  ## Optional Options



  - `:message` - Custom error message callback `(value -> String.t())`



  ## Examples



      iex> Funx.Validator.Integer.validate(5)

      %Funx.Monad.Either.Right{right: 5}



      iex> Funx.Validator.Integer.validate(5.5)

      %Funx.Monad.Either.Left{left: %Funx.Errors.ValidationError{errors: ["must be an integer"]}}

  """



  use Funx.Validator



  @impl Funx.Validator

  def valid?(value, _opts, _env) do

    is_integer(value)

  end



  @impl Funx.Validator

  def default_message(_value, _opts) do

    "must be an integer"

  end

end