If you want to use the 'methods' package, you could do something like:
replace <- function (p1, p2, ...)
{
stop(gettextf("cannot 'replace' with arguments of class %s and %s",
sQuote(class(p1)[1L]), sQuote(class(p2)[1L])))
}
methods::setGeneric("replace")
methods::setMethod("replac
Dear List-members,
I would like to experiment with dispatching on 2 arguments and have a
few questions.
p1 = data.frame(x=1:3, coeff=1)
class(p1) = c("pm", class(p1));
I want to replace variables in a polynomial with either:
another polynomial, or another variable (character) or with a spec
2 matches
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