makeClassRepresentation {methods}R Documentation

Create a Class Definition


Constructs a classRepresentation-class object to describe a particular class. Mostly a utility function, but you can call it to create a class definition without assigning it, as setClass would do.


makeClassRepresentation(name, slots=list(), superClasses=character(),
                        prototype=NULL, package, validity, access,
                        version, sealed, virtual=NA, where)


name character string name for the class
slots named list of slot classes as would be supplied to setClass, but without the unnamed arguments for superClasses if any.
superClasses what classes does this class extend
prototype an object providing the default data for the class, e.g, the result of a call to prototype.
package The character string name for the package in which the class will be stored; see getPackageName.
validity Optional validity method. See validObject, and the discussion of validity methods in the reference.
access Access information. Not currently used.
version Optional version key for version control. Currently generated, but not used.
sealed Is the class sealed? See setClass.
virtual Is this known to be a virtual class?
where The environment from which to look for class definitions needed (e.g., for slots or superclasses). See the discussion of this argument under GenericFunctions.


The R package methods implements, with a few exceptions, the programming interface for classes and methods in the book Programming with Data (John M. Chambers, Springer, 1998), in particular sections 1.6, 2.7, 2.8, and chapters 7 and 8.

While the programming interface for the methods package follows the reference, the R software is an original implementation, so details in the reference that reflect the S4 implementation may appear differently in R. Also, there are extensions to the programming interface developed more recently than the reference. For a discussion of details see ?Methods and the links from that documentation.

See Also


[Package methods version 2.5.0 Index]