insert rows between dates by group

Question

I want to insert rows between two dates by group. My way of doing it is so complicated that I insert missing values by last observation carry forwards and then merge. I was wond

Answer 1

The simplest way that I have found to do this is with the padr library.

library(padr)
dt_padded <- pad(dt, group = "user", by = "date") %>%
  replace_na(list(dummy=0))