check_environment_unset | R Documentation |
This internal function checks whether a given environment variable is set or
not. It returns TRUE
if the variable is either null or an empty string,
indicating that the environment variable is not set. Otherwise, it returns
FALSE
.
check_environment_unset(x)
x |
The environment variable to be checked. |
Logical value indicating whether the environment variable is not set (either null or an empty string).
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