Message-ID: <26F53C67-F7E8-4C0F-85F3-6C50E4F87168@r-enthusiasts.com>
Date: 2013-12-14T14:12:18Z
From: Romain Francois
Subject: internal manipulation of ...
In-Reply-To: <CABdHhvE_TodiJp5pzBYWdQKn3QuKHSwJ62xwun2-cG3tX04EKQ@mail.gmail.com>
Thanks. This works for me. See this gist: https://gist.github.com/romainfrancois/7959531
Romain
Le 13 d?c. 2013 ? 01:09, Hadley Wickham <h.wickham at gmail.com> a ?crit :
> Could you pass the environment and then look for the object called ... in it?
>
> f <- function(...) {
> .Call("my_fun", environment())
> }
>
> I think (and may well be wrong) that you can use standard tools to
> find the DOTSXP object in that environment.
>
> Hadley
>
>
> On Thu, Dec 12, 2013 at 2:32 PM, Romain Fran?ois
> <romain at r-enthusiasts.com> wrote:
>> Hello,
>>
>> I?m looking for examples on how to manipulate the ... internally, e.g. in a .Call or .External function.
>>
>> I?m particularly interested in accessing the environment in which each contribution to ... can be evaluated.
>>
>> So far, I?m using tricks involving passing down the sys.calls() and sys.frames() down to the C function. The documentation in http://cran.r-project.org/doc/manuals/R-ints.html#Dot_002ddot_002ddot-arguments did not help me a lot.
>>
>> Romain
>> ______________________________________________
>> R-devel at r-project.org mailing list
>> https://stat.ethz.ch/mailman/listinfo/r-devel
>
>
>
> --
> http://had.co.nz/