Functions often get passed variables from within dataframes or other lists. However, printing these names with all their dollar signs isn't very userfriendly. This function simply uses a regular expression to extract the actual name.
extractVarName(x)A character vector of one or more variable names.
The actual variables name, with all containing objectes stripped off.
extractVarName('mtcars$mpg');
#> [1] "mpg"