On 02/22/2018 12:07 PM, Iñaki Úcar wrote:
2018-02-22 10:29 GMT+01:00 Tomas Kalibera <tomas.kalib...@gmail.com>:
The example is invoking NextMethod via an anonymous function, which is not
allowed (see documentation for NextMethod).
Thanks for your response. I definitely missed that bit.

Normally one gets a runtime
error "'NextMethod' called from an anonymous function", but not here as the
anonymous function is called via do.call. I will fix so that there is a
runtime error in this case as well, thanks for uncovering this problem.
Then I did well chosing this list! Please also note that you could
take that anonymous function out of the method and name it, and the
behaviour would be the same. So maybe this case should issue an error
I am not sure I understand how, but if you find a way to bypass the new check for an anonymous function (I intend to commit tomorrow), I will be happy to have a look if you provide a reproducible example.
I don't think there is a way to replace (unnamed) arguments in dots for
That's a pity. IMHO, it should be some mechanism for that, but dots
are special in inscrutable ways.

Anyway, for anyone insterested, I found a workaround:

Even though technically this won't be too hard, I don't think NextMethod should be made any more complex than it is now. There should always be a way to implement special dispatch scenarios in R and your workaround shows it is possible specifically in your scenario.




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