Is a character variable defined
Is a character variable defined
is_empty(x, empty = "\\s*")
x |
Character value to evaluate |
empty |
Indicate what 'empty' means. Default is empty string (i.e., "") |
Is a variable NULL or an empty string
TRUE if empty, else FALSE
is_empty("")
is_empty(NULL)
is_empty(NA)
is_empty(c())
is_empty("none", empty = "none")
is_empty("")
is_empty(" ")
is_empty(" something ")
is_empty(c("", "something"))
is_empty(c(NA, 1:100))
is_empty(mtcars)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.