| makeClassRepresentation {methods} | R Documentation |
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 and ongoing development, see the web page http://developer.r-project.org/methodsPackage.html and the pointers from that page.