mutate and rowSums exclude columns

Question

Similar to: mutate rowSums exclude one column but in my case, I really want to be able to use select to remove a specific column or set of columns

I\'m

Answer 1

@akrun provided already a relevant link about this problem. As about dplyr solution, I would actually use do:

d %>%
  do({
    .$Total <- rowSums(select(., -Epsilon, -Alpha))
    .
  })