R: Checks if a function is a S3 generic function

isGenericS3 {R.methodsS3} | R Documentation

## Checks if a function is a S3 generic function

### Description

Checks if a function is a S3 generic function.

### Usage

    ## Default S3 method:
    isGenericS3(fcn, envir=parent.frame(), ...)

### Arguments

`fcn` | A `function` or a `character` string.
`envir` | If argument `fcn` is a `character`, this is the `environment` from which the search for the `function` is done.
`...` | Not used.

### Details

A function is considered to be a generic S3/UseMethod function if its name matches one of the known S3 generic functions, or if it calls `UseMethod()`.

### Value

Returns `TRUE` if a generic S3/UseMethod function, otherwise `FALSE`.

### Author(s)

Henrik Bengtsson

[Package R.methodsS3 version 1.7.1 Index]