is.empty {utilitiesR}R Documentation

See if an argument is na, null, or length 0 (syntactic sugar).

Description

See if an argument is na, null, or length 0 (syntactic sugar).

Usage

  is.empty(x)

Arguments

x

object to check

Value

boolean, TRUE if it is na, null OR length 0.

Note

syntactic sugar for is.null(x) || is.na(x) || length(x)==0. Note that the empty string ("") is NOT "empty" in this sense.

Examples

is.empty(NA)          # true
is.empty(NULL)        # true
is.empty(character()) # true, length 0
is.empty("")          # false, this has length 1.

[Package utilitiesR version 2.0 Index]