[Rcpp-devel] Locating an Instance of a Reference Class in the Environment

[Matthew Supernaw - NOAA Federal]

Hi Jeff,
I'm not sure I understand your comment. The code is part of a package.
We're just trying to sync the declared object name in the R environment to
the object in the Rcpp module programmatically from c++ for internal use. I
just wondered if there was a way to access the wrapped object in the
Rcpp:::PreserveStorage class and Dirk answered that question.
Thanks.
Matthew


On Fri, Mar 24, 2023 at 2:34 PM Jeff Newmiller <jdnewmil at dcn.davis.ca.us>
wrote:

> Matthew... the normal context for sharing Rcpp code is within a package.
> It is a no-brainer to have an R API called by the user that calls whatever
> Rcpp code it needs to, which is why your objection seems inappropriate to
> me.
>
> On March 24, 2023 10:43:34 AM PDT, Dirk Eddelbuettel <edd at debian.org>
> wrote:
> >
> >On 24 March 2023 at 13:08, Matthew Supernaw - NOAA Federal wrote:
> >| I'm sure it's possible to do from the R side, however, the requirement
> is to
> >| hide this from the end user and set the reference objects name to the
> declared
> >| name from the R environment. If I view the environment in RStudio,
> there is
> >| much more information available. ls() only returns a list of objects by
> their
> >| declared name. I'm wondering how to get more details about elements in
> the
> >| environment.
> >
> >Thanks for additional color.  That may be a very interesting and valuable
> >question _for the C API of R_ and youe guess of "maybe Rcpp has a helper"
> is
> >a good one.  Sadly, I fear we may not have anything for you.
> >
> >Dirk
> >
> >--
> >dirk.eddelbuettel.com | @eddelbuettel | edd at debian.org
> >_______________________________________________
> >Rcpp-devel mailing list
> >Rcpp-devel at lists.r-forge.r-project.org
> >https://lists.r-forge.r-project.org/cgi-bin/mailman/listinfo/rcpp-devel
> --
> Sent from my phone. Please excuse my brevity.
>


-- 
Matthew Supernaw
*Scientific Software Developer*
*National Oceanic and Atmospheric Administration*
*Office Of Science and Technology*
*NOAA Fisheries | *U.S. Department of Commerce
Phone 248 - 396 - 7797
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