ArgParser constructor
Creates a new ArgParser.
If allowTrailingOptions
is true
(the default), the parser will parse
flags and options that appear after positional arguments. If it's false
,
the parser stops parsing as soon as it finds an argument that is neither
an option nor a command.
Implementation
factory ArgParser({bool allowTrailingOptions = true, int? usageLineLength}) =>
ArgParser._(<String, Option>{}, <String, ArgParser>{}, <String, String>{},
allowTrailingOptions: allowTrailingOptions,
usageLineLength: usageLineLength);