Register S3 methods

registerS3method

Description

Usage

registerS3method(genname, class, method, envir = parent.frame()) 
registerS3methods(info, package, env)

Arguments

genname	character string giving the generic function name.
class	character string giving the class name.
method	character string giving the method name or a function to be registered. If this is NA or a function, the method name is constructed from genname and class.
envir, env	the environment where the S3 method(s) should be registered
info	a 3-columns character matrix. Each row represents one registered S3 method. The three columns represents the generic, class and method name in turn.
package	the package name where the S3 methods should be registered.

Details

registerS3method registers an S3 method in the internal table of S3 methods stored in the environment envir. Also, if envir is a namespace, the method is added to the information returned by getNamespaceInfo with which="S3methods".

registerS3methods registers multiple S3 methods specified by the matrix info. The methods are registered in the internal S3 method table for the namespace for package. The method functions are retrieved from env, and the getNamespaceInfo information is modified for the environment env if it is a namespace.

Value

registerS3method and registerS3methods returns NULL.

Examples

## Not run: 
## define dummy S3 method
add1.DUMMYCLASS <- function (object, scope, ...) 123L
## register in the "stats" package
registerS3method("add1","DUMMYCLASS","add1.DUMMYCLASS", envir=getNamespace("stats"))
## another way of doing the same thing
registerS3methods(matrix(c("add1","DUMMYCLASS","add1.DUMMYCLASS"),nrow=1),
                  package="stats", env=getNamespace("stats"))

## End(Not run)

Package base version 6.0.0-69
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