Comment faire la new-colonne à un-anframe au front
library(tibble)
df <- data.frame(b = c(1, 1, 1), c = c(2, 2, 2), d = c(3, 3, 3))
add_column(df, a = 0, .before = 1)
# a b c d
# 1 0 1 2 3
# 2 0 1 2 3
# 3 0 1 2 3
Rümeysa Aksu