R help - Dec 2020 - How to perform package cleanup when R session is ending?

Hi,

I am looking for a way to clean up my package resources before R is ended.
It looks like the .onUnload function would not be helpful as it would not
be called before R is ended. This behavior has been described in the
document:

*Note that packages are not detached nor namespaces unloaded at the end of
an R session unless the user arranges to do so (e.g., via .Last).*

I have also searched for ?.Last as the document says. However, the .Last
function is for the end user to use, not for the package developers, so I
am clueless now. How to clean up my package before R ends? Any suggestions?

Best,
Jiefei

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Have you tried using reg.finalizer(..., onexit=TRUE)?

-BIll

On Fri, Dec 18, 2020 at 7:29 AM Jiefei Wang <szwjf08 at gmail.com> wrote:
> Hi,
>
> I am looking for a way to clean up my package resources before R is ended.
> It looks like the .onUnload function would not be helpful as it would not
> be called before R is ended. This behavior has been described in the
> document:
>
> *Note that packages are not detached nor namespaces unloaded at the end of
> an R session unless the user arranges to do so (e.g., via .Last).*
>
> I have also searched for ?.Last as the document says. However, the .Last
> function is for the end user to use, not for the package developers, so I
> am clueless now. How to clean up my package before R ends? Any suggestions?
>
> Best,
> Jiefei
>
>         [[alternative HTML version deleted]]
>
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>
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