/// <summary>
/// Initializes or retrieves from the cache <see cref="_languageCodeSuggestions"/>
/// </summary>
/// <returns>
/// List of language code suggestions
/// </returns>
internal static IEnumerable <KeyValuePair <string, DType> > GetLanguageCodeSuggestions()
{
if (_languageCodeSuggestions == null)
{
Interlocked.CompareExchange(
ref _languageCodeSuggestions,
TexlStrings.SupportedDateTimeLanguageCodes(null).Split(new[] { ',' }).Select(locale => new KeyValuePair <string, DType>(locale, DType.String)),
null);
}
return(_languageCodeSuggestions);
}