How to create sequential columns with one function in R

Question

I have a dataset that needs to be modified to include 30 additional columns (up to field7_30), none of which will contain data. Is there way to write this without using 30 separate mutate functions?

df<- as.data.frame(ID = c(1:5),field7_01 = c(0,0,1,1,3))

df<-df%>%
mutate(field7_02 = '', field7_03='')

Answer 1

Here is one tidyverse possibility:

library(dplyr)
library(stringr)
library(purrr)

df |>
  mutate(!!!map(set_names(str_c("field7_", str_pad(2:30, 2, "left", "0"))), ~ ''))

As you can see this is not nearly as succinct as the base R solution.