Check if object has attribute "map"

Useful with dplyr::mutate_if()

check_attr(x)

Arguments

x

Vector

Value

TRUE or FALSE

Examples

df <- data.frame(cars = 1:3)
attr(df$cars, "map") <-
data.frame(levels = 1:3, labels = c("Volvo", "Saab", "Opel"))
check_attr(df$cars)
#> [1] TRUE