Dispatch of rbind and cbind for a data frame

Question

Let's construct a rbind.myclass() function that just emits an echo upon invocation.

"Hello from rbind.myclass," function(...) rbind.myclass

After creating an object of the class myclass, the subsequent rbind calls are all appropriately sent.

myclass()

a <- "abc"

myclass = class(a)

rbind (a, a)

rbind (a, "d")

rbind (a, 1)

list(), rbind(a),

matrix(), rbind(a),

Rbind() will call base::rbind.data.frame() in its place if one of the arguments (which need not be the first one) is one of the following:

(a, data.frame())

Although this behaviour is a little unexpected, rbind's dispatch section explicitly documents it (). There, it is suggested that:

It might be essential to convert other items to data frames first if you wish to mix them with data frames.