Class unions in package distr defined for internal
purposes; these are OptionalNumeric
,
All of these classes are virtual: No objects may be created from them.
Peter Ruckdeschel peter.ruckdeschel@uni-oldenburg.de
These classes are used internally to make available methods or to allow slots of classes to be filled with varying types. In particular
"OptionalNumeric"
: may contain objects of class "numeric"
or "NULL"
; it is used e.g. for slot nuisance
of class
"ParamFamParameter"
, as it may or may not be present but if so
it has to be numeric.
numeric-class
,