Determine Whether a Function is a Generic

isGeneric

Description

Determines whether a particular function name corresponds to a generic function.

Usage

isGeneric(f, where = topenv(parent.frame()), fdef = NULL, getName = FALSE)

Arguments

f	character string, name of the function.
where	package or environment to search for the generic function.
fdef	This argument is unimplemented, and a warning is generated if it is given.
getName	This argument is unimplemented, and a warning is generated if it is given.

Value

a logical value, TRUE if f is the name of a generic function.

See Also

setMethod, setGeneric.

Examples

setGeneric("setG", function(x)standardGeneric("setG"))
setMethod("setG", "numeric", function(x) x^2)
isGeneric("setG") # TRUE
isGeneric("show")  # TRUE
isGeneric("no-such-function") # FALSE

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