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)
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 |
|
sealed |
|
virtual |
Is this known to be a virtual class? |
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.