[Rd] What is callGeneric used for?

[Gabor Grothendieck]

In the case of arithmetic methods you might not know or care
whether the generic is, say, + or -.

On 5/10/06, Seth Falcon <sfalcon at fhcrc.org> wrote:
> I've recently come across two pieces of code using calls to
> callGeneric() inside the definition of a method.
>
> In both cases, it appears to me that the callGeneric call could be
> replaced with a "real" call to the generic, say foo(x) instead of
> callGeneric(x) inside method foo.
>
> My understanding from the docs is that when called with arguments, it
> is just like calling the actual generic.  Clear enough, but what does
> this provide that just calling the actual generic doesn't?
>
> Similarly, when would one want to make the recursive call that results
> from calling callGeneric with no args?
>
> Thanks,
>
> + seth
>
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