Dialyxir.Warnings.NegativeGuardFail (Dialyxir v1.4.2) View Source

The function guard either presents an impossible guard or the only calls will never succeed against the guards.

Example

defmodule Example do
  def ok(ok = "ok") when not is_bitstring(ok) do
    :ok
  end
end

or

defmodule Example do
  def ok() do
    ok(:ok)
  end

  defp ok(ok) when not is_atom(ok) do
    :ok
  end
end