The R Project SVN R

Rev

Rev 27442 | Rev 47143 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed

Rev Author Line No. Line
27442 ripley 1 
\name{getS3method}
2 
\alias{getS3method}
3 
\title{Get An S3 Method}
4 
\description{
5 
  Get a method for an S3 generic, possibly from a namespace.
6 
}
7 
\usage{
8 
getS3method(f, class, optional = FALSE)
9 
}
10 
\arguments{
11 
  \item{f}{character: name of the generic.}
12 
  \item{class}{character: name of the class.}
13 
  \item{optional}{logical: should failure to find the generic or a
14 
    method be allowed?}
15 
}
16 
\details{
17 
  S3 methods may be hidden in packages with namespaces, and will not
18 
  then be found by \code{\link{get}}: this function can retrieve
19 
  such functions, primarily for debugging purposes.
20 
}
21 
\value{
22 
  The function found, or \code{NULL} if no function is found and
23 
  \code{optional = TRUE}.
24 
}
25 
\seealso{
26 
  \code{\link{methods}}, \code{\link{get}}
27 
}
28 
\examples{
27464 ripley 29 
require(stats)
27442 ripley 30 
exists("predict.ppr") # false
31 
getS3method("predict", "ppr")
32 
}
33 
\keyword{data}
34