Warn if a variable already exists inside a dataset
See also
Function that provide users with custom warnings
suppress_warning()
,
warn_if_incomplete_dtc()
,
warn_if_inconsistent_list()
,
warn_if_invalid_dtc()
Examples
library(pharmaversesdtm)
data(dm)
## No warning as `AAGE` doesn't exist in `dm`
warn_if_vars_exist(dm, "AAGE")
## Issues a warning
warn_if_vars_exist(dm, "ARM")
#> Warning: Variable `ARM` already exists in the dataset