[R] How can certain variables be automatically excluded from being saved?

[Jim Lemon]

Hi Ralph,
I suppose you could write a wrapper for q():

byebye<-function(drop=".Random.seed",save = "default", status = 0,
runLast = TRUE) {
 if(drop %in% ls(all.names=TRUE)) rm(drop,pos=1)
 q(save=save,status=status,runLast=runLast)
)

warning: untested

Jim

On Thu, Apr 1, 2021 at 7:05 PM Ralf Goertz <r_goertz using web.de> wrote:
>
> Hi,
>
> after having read here about the "seed problem" I wonder if there is a
> way to automatically exclude certain variables from being saved when the
> workspace image is saved at the end of an interactive session. I have
> been using .First() and .Last() for ages but apparently they are of no
> help as .First() gets called before loading the workspace and .Last()
> after it has been saved. At least the line
>
> if (".Random.seed" %in% ls(all.names=T)) rm(.Random.seed, pos=1)
>
> in either of those functions doesn't have the desired effect.
>
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