Does an Object Have a Length of Zero?

This is just a "shortcut" to "length(x) == 0L"

Usage

hasZeroLength(x)

Arguments

x

R object that has a length attribute, e.g. vector or list

Value

TRUE if length(x) == 0L, otherwise FALSE

Examples

hasZeroLength(character()) # TRUE
#> [1] TRUE

hasZeroLength(list()) # TRUE
#> [1] TRUE

# Do not confuse, has nothing to do with the length of a string
# here: vector of length one
hasZeroLength("") # FALSE
#> [1] FALSE

# Remember that the length of a data frame is the number of its columns
hasZeroLength(data.frame(a = character())) # FALSE
#> [1] FALSE