How do I add a prefix to several variable names using dplyr?

Question

I\'m trying to add a common prefix to each of the variable names in a data.frame. For example, using the mtcars data, I could add the prefix \"cars.\" using th

Answer 1

The latest solution (2020) seems to use rename_with, which is available in dplyr 1.0.0 and higher:

mtcars %>% rename_with(.fn = ~ paste0("Myprefix_", .x, "_Mypostfix")) -> mtcars.custom

Use the .cols = argument to specify a subset of variables, it defaults to everything().