Cldr.Config.system_name_from

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system_name_from(number_system, locale_name, backend)

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Specs

system_name_from(
  String.t(),
  Cldr.Locale.locale_name() | Cldr.LanguageTag.t(),
  t() | Cldr.backend()
) :: {:ok, atom()} | {:error, {module(), String.t()}}

Returns a number system name for a given locale and number system reference.

Arguments

Number systems can be referenced in one of two ways:

  • As a number system type such as :default, :native, :traditional and :finance. This allows references to a number system for a locale in a consistent fashion for a given use

  • With the number system name directly, such as :latn, :arab or any name returned by Cldr.known_number_systems/0

This function dereferences the supplied system_name and returns the actual system name.

Examples

iex> Cldr.Config.system_name_from(:default, "en", TestBackend.Cldr)
{:ok, :latn}

iex> Cldr.Config.system_name_from("latn", "en", TestBackend.Cldr)
{:ok, :latn}

iex> Cldr.Config.system_name_from(:native, "en", TestBackend.Cldr)
{:ok, :latn}

iex> Cldr.Config.system_name_from(:nope, "en", TestBackend.Cldr)
{
  :error,
  {Cldr.UnknownNumberSystemError, "The number system :nope is unknown"}
}