I think ?body, especially the replacement form body<-, might be what you are looking for.
Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Mon, Dec 27, 2021 at 5:07 AM Grzegorz Smoliński <[email protected]> wrote: > > Hi, > > I know it is possible to find the environment in which some object > lives using the 'environment()' function and the name of this object, > but how to modify code of this object after this? Below is MRE: > > test <- function() 1 > > test() # 1 > > environment(test)$test <- eval(parse(text = "function() 2")) > > test() # still 1 > > .GlobalEnv$test <- eval(parse(text = "function() 3")) > > test() # 3 > > The context is I have shiny app which code I would like to modify (add > something) and the only way to refer to this environment I know is to > use 'environment()' (as I see, those functions do not live in > .GlobalEnv), but as you can see above, I can't use it to modify the > code. > > Best regards, > > Grzegorz Smoliński > > ______________________________________________ > [email protected] mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ [email protected] mailing list -- To UNSUBSCRIBE and more, see https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.

