R Under development (unstable) (2025-02-23 r87804 ucrt) -- "Unsuffered Consequences"
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> library("R.utils")
Loading required package: R.oo
Loading required package: R.methodsS3
R.methodsS3 v1.8.2 (2022-06-13 22:00:14 UTC) successfully loaded. See ?R.methodsS3 for help.
R.oo v1.27.0 (2024-11-01 18:00:02 UTC) successfully loaded. See ?R.oo for help.

Attaching package: 'R.oo'

The following object is masked from 'package:R.methodsS3':

    throw

The following objects are masked from 'package:methods':

    getClasses, getMethods

The following objects are masked from 'package:base':

    attach, detach, load, save

R.utils v2.13.0 successfully loaded. See ?R.utils for help.

Attaching package: 'R.utils'

The following object is masked from 'package:utils':

    timestamp

The following objects are masked from 'package:base':

    cat, commandArgs, getOption, isOpen, nullfile, parse, use, warnings

> 
> # Get a temporary variable
> name <- tempvar()
> print(name)
[1] "var1794241770"
> 
> # Get and assign a temporary variable
> name <- tempvar(value=base::letters)
> print(name)
[1] "var258835092"
> str(get(name))
 chr [1:26] "a" "b" "c" "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" ...
> 
> # Get a temporary variable with custom prefix
> name <- tempvar(prefix=".hidden")
> print(name)
[1] ".hidden51035954"
> 
> proc.time()
   user  system elapsed 
   0.18    0.03    0.20