The class haven_labelled_defined represents a semantically
enriched labelled vector created by defined.
Objects of this class inherit from:
haven::labelled for numeric,
character, and factor data;
Date for temporal dates;
POSIXct and POSIXt for timestamps;
logical for boolean data.
The class tag enables S3 method dispatch for:
as_character
as_numeric
as_logical
as.Date
as.POSIXct
print.haven_labelled_defined
summary.haven_labelled_defined
Users normally do not construct this class directly; it is returned
as the result of calling defined.
No value is returned. This documentation page exists so that the class can be referenced in help topics.