Empty Value

Rails-inspired helper that checks if vector values are "empty", i.e. if it's: NULL, zero-length, NA, NaN, FALSE, an empty string or 0. Note that unlike its native R is.<something> sibling functions, is.empty is vectorised (hence the "values").

is.empty(x, trim = TRUE, ...)

Arguments

x	an object to check its emptiness
trim	trim whitespace? (TRUE by default)
...	additional arguments for sapply

Examples

if (FALSE) {
is.empty(NULL)     # [1] TRUE
is.empty(c())      # [1] TRUE
is.empty(NA)       # [1] TRUE
is.empty(NaN)      # [1] TRUE
is.empty("")       # [1] TRUE
is.empty(0)        # [1] TRUE
is.empty(0.00)     # [1] TRUE
is.empty("    ")   # [1] TRUE
is.empty("foobar") # [1] FALSE
is.empty("    ", trim = FALSE)    # [1] FALSE
# is.empty is vectorised!
all(is.empty(rep("", 10)))        # [1] TRUE
all(is.empty(matrix(NA, 10, 10))) # [1] TRUE
}