argumentDomain
The identifier for the domain that contains command-line settings.
Declaration
class let argumentDomain: StringDiscussion
When someone launches your app from Xcode or the command-line, they can override setting values using command-line arguments. The defaults system stores those overrides in this domain, which is volatile and resets with each app launch. Values in this domain override most other domains, including your app-specific settings.
To specify custom settings from the command line, add the -default parameter to your command-line invocation followed by a key=value string with the key and value you want to set.