[R-pkg-devel] Proper way to ask a user to set permanent variables?

[Rainer M Krug]

Hi Dirk,

The package-local environment is definitely a good approach (I use it myself an a few packages). And the options() are nice as they represent a standardised interface in R (Note to myself: I should use these more in my packages).

But unless I am missing something, these are not persistent between sessions? I assume, that is not an issue in your case?

Cheers,

Rainer
 

> On 15 Jan 2020, at 23:47, Dirk Eddelbuettel <edd using debian.org> wrote:
> 
> 
> Jonathan,
> 
> In all but one (maybe two?) of my packages I found relying on options()
> sufficient. I usually follow the somewhat-common pattern of creating a
> package-local environment in R/init.R or R/zzz.R. I then fill it with values
> reflecting options() (often under a tag starting with the package name)
> and/or environment variables, and sometime also provide 'setters' to update
> the environment values. That have proven to be both good enough and rather
> robust and, as an added benefit, does not depend on anything further.
> 
> Cheers, Dirk
> 
> -- 
> http://dirk.eddelbuettel.com | @eddelbuettel | edd using debian.org
> 
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--
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany)

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