[Rd] Demo for linking native routines between R packages

[Zhang, Jitao David]

Dear Davis,

Thank you a lot for sharing this, and I am happy that I was not the only
one who need to do it once to learn:)

I proposed to add my repo to the manual. I think it makes sense to add both
of ours, if possible, or we could merge them together and add that to the
manual.

Long-term URL stability is apparently an issue, but I think we may find a
solution there.

Anyway, thanks a lot for sharing!

Best wishes,
David

On Fri, Apr 17, 2020 at 3:12 PM Davis Vaughan <davis using rstudio.com> wrote:

> Nice David! I also wrote up something similar a little while back
> https://github.com/DavisVaughan/cexport
>
> -Davis
>
> On Fri, Apr 17, 2020 at 7:09 AM Zhang, Jitao David via R-devel <
> r-devel using r-project.org> wrote:
>
>> Dear R developers,
>>
>> I want to advertise a small project for the educational purpose to show
>> people how to link native routines.
>>
>> In R programming, we need to link to native routines in C, C++, or Fortran
>> from the R environment. In most cases, the linking works within one
>> package, namely the R code in a package calls the native code in the same
>> package.
>>
>> This is not necessarily always the case. Sometimes, a piece of C or R code
>> in a package needs to link to native routines in another R package.
>> The *Writing
>> R Extensions manual describes *how to do this in the section *Linking to
>> native routines in other packages*. However, some details were not clear
>> to
>> me, and I could find no demo dedicated to this purpose.
>>
>> Therefore, I decided to build a demo that is available at my Github
>> repository Accio/demo-linking-native
>> <https://github.com/Accio/demo-linking-native>. Besides implementing the
>> linking of native routines between R packages, the project also documents
>> issues that I met and how I solved them.
>>
>> In case you find the demo useful or you have suggestions on how to improve
>> it, please let me know. I wonder whether you think it is a good idea to
>> suggest to the core team to add the project to the manual so that other
>> people can understand the process better with the demo.
>>
>> In case of questions, let me know.
>>
>> Best wishes,
>> David
>>
>> --
>>
>> *Dr. Jitao David Zhang | 张继涛 | A Computational Biologist in Drug
>> Discovery*
>>
>> *Building 93/3.38, **Tel +41 61 688 62 51*
>>
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>> (pRED) | Pharmaceutical Sciences, BiOmics, BEDA (see http://**
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>

-- 

*Dr. Jitao David Zhang | 张继涛 | A Computational Biologist in Drug Discovery*

*Building 93/3.38, **Tel +41 61 688 62 51*

*Roche Pharmaceutical Research and Early Development
(pRED) | Pharmaceutical Sciences, BiOmics, BEDA (see http://**go.roche.com/BEDA
<http://go.roche.com/BEDA>**) | Roche Innovation Center Basel | F.
Hoffmann-La-Roche AG | CH-4070 Basel | Switzerland*
*Core working hours - No Meetings: Mo/8:30-16:00; Tu/8:30-17:00;
We/8:30-16:00; Th/9:00-11:30*
*Available for meetings: Mo/16:00-17:00; We/16:00-17:00**; Th/11:00-17:00;
Fr/8:00-10:00*

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