Environment variables
Temporarily change system environment variables.
with_envvar(new, code, action = "replace") local_envvar( .new = list(), ..., action = "replace", .local_envir = parent.frame() )
new, .new |
|
code |
|
action |
should new values |
... |
Named arguments with new environment variables. |
.local_envir |
|
if NA is used those environment variables will be unset.
If there are any duplicated variable names only the last one is used.
[any]
The results of the evaluation of the code
argument.
withr for examples
with_envvar(new = c("GITHUB_PAT" = "abcdef"), Sys.getenv("GITHUB_PAT"))
# with_envvar unsets variables after usage
Sys.getenv("TEMP_SECRET")
with_envvar(new = c("TEMP_SECRET" = "secret"), Sys.getenv("TEMP_SECRET"))
Sys.getenv("TEMP_SECRET")Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.