add a string to end of all the column names
Examples
df <- append_suffix_to_colnames(carData::Salaries, '_s')
#> Warning: `append_suffix_to_colnames()` was deprecated in eepR 1.0.0.
#> ℹ Please use the `suffix` argument of `append_colnames()` instead.
head(df)
#> rank_s discipline_s yrs.since.phd_s yrs.service_s sex_s salary_s
#> 1 Prof B 19 18 Male 139750
#> 2 Prof B 20 16 Male 173200
#> 3 AsstProf B 4 3 Male 79750
#> 4 Prof B 45 39 Male 115000
#> 5 Prof B 40 41 Male 141500
#> 6 AssocProf B 6 6 Male 97000