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R.oo (version 1.3.0)

setGenericS3: Creates a generic function in S3/UseMethod style

Description

Note that this method is a internal method called by setMethodS3() and there is no reason for calling it directly! Creates a generic function in S3/UseMethod style, i.e. setting a function with name name that despatch the method name via UseMethod. If there is already a function named name that function is renamed to name.default.

Usage

## S3 method for class 'default}(name, envir=parent.frame(), ellipsesOnly=TRUE, dontWarn=getOption("dontWarnPkgs"), enforceRCC=TRUE, ...)':
setGenericS3undefined

name{The name of the generic function.}
  envir{The environment for where this method should be stored.}
  ellipsesOnly{If TRUE, the only arguments in the generic function
     will be ....}
  dontWarn{If a non-generic method with the same name is found it
     will be "renamed" to a default method. If that method is found in
     a package with a name that is not found in dontWarn
     a warning will be produced, otherwise it will be renamed silently.}
  ...{Not used.}

myCat.matrix <- function(..., sep=", ") {
    cat("A matrix:
");
    cat(..., sep=sep);
    cat("
");
  }

  myCat.default <- function(..., sep=", ") {
    cat(..., sep=sep);
    cat("
");
  }

  setGenericS3("myCat");

  myCat(1:10);
  mat <- matrix(1:10, ncol=5);
  attr(mat, "class") <- "matrix";  # Has to be done as of [R] V1.4.0.
  myCat(mat);

To define a method for a class see setMethodS3().
  For a thorough example of how to use this method see Object.

[object Object]

programming
methods

internal

Arguments