(1) It seems to me that, generally, in R it is not possible to overload functions. Is that right?

(2) Assuming that the above is true, or partially true, is there any extra packages to handle overloading in R?

(3) Assuming (1) is TRUE and (2) is FALSE, can anyone provide some advice on developing some function that understand what the arguments are and then calls the right overloaded function?

It would be something like this:

overloadedFunction1 <- function(x) {};

overloadedFunction2 <- function(x, y) {};

theFunction <- function(...)
{
  # How to identify ... and call the right overloaded function?
}

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