MyApp.Cldr.Number.Cardinal.known_locale_names

You're seeing just the function known_locale_names, go back to MyApp.Cldr.Number.Cardinal module for more information.

Specs

known_locale_names() :: [Cldr.Locale.locale_name(), ...]

The configured locales for which plural rules are defined.

Returns the intersection of MyApp.Cldr.known_locale_names/0 and the locales for which Cardinal plural rules are defined.

There are many Cldr locales which don't have their own plural rules so this list is the intersection of Cldr's configured locales and those that have rules.