Returns the most preferred locale for the system or application, or
Err(NotAvailable) if the locale could not be obtained.
The returned Str is a BCP 47 language tag, like en-US or fr-CA.
:= []
Returns the most preferred locale for the system or application, or
Err(NotAvailable) if the locale could not be obtained.
The returned Str is a BCP 47 language tag, like en-US or fr-CA.
Returns the preferred locales for the system or application.
The returned Str values are BCP 47 language tags, like en-US or fr-CA.