[R-pkg-devel] Assigning a variable to global environment

Thank Matt for your response.
Would be an acceptable solution to check if the variable exists first and
creating the new variable with a suffix? Please, see the following example

     var_name <-  "name"
     var_name <- ifelse(exists(var_name),
                          paste(var_name, "_vct", sep = ""),
                          var_name)
and then

assign(var_name, 1, envir = .GlobalEnv)

Cheers,
Tiago

Em sex., 11 de dez. de 2020 ?s 15:20, Matt Denwood <md at sund.ku.dk> escreveu:

On 11 Dec 2020, at 18:32, Tiago Olivoto <tiagoolivoto at gmail.com> wrote:

Hi everyone,
This can be a very simple question, but I really have the following

doubt.

CRAN Policies says that 'Packages should not modify the global

environment

(user?s workspace)'. So, may I or may I not create a function that will
call internally the following code? (a simple example)

assign("name", 1, envir = .GlobalEnv)

You may not - and for good reason, as the user may have an existing
variable called ?name? that will be destroyed by such an action.  If you
run "R CMD check ?as-cran" on a package containing this code you will get a
warning (or maybe a note, I can?t remember), and the package would most
likely be refused if you tried to submit it to CRAN.

Cheers,

Matt

Cheers
Tiago

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