Are any zero char or all whitespace elements present?

Tests if a character vector contains any zero character or all whitespace elements.

Usage

anyZchar(x)

anyWS(x, zchar = FALSE)

Arguments

x

a character vector.

zchar

if TRUE then zero character elements will be treated as all whitespace.

Value

an integer or real vector of length one with value the 1-based index of the first zero char/all whitespace value if any, otherwise 0.

Details

anyZchar() and anyWS() return an index immediately when encountering a zero character or a whitespace element, respectively.

Whitespace elements are defined as any character that is a space, horizontal tab, carriage return or newline: aka "[ \t\r\n]". See trimws for more details and how to instead match all unicode whitespace.

anyZchar() implements the same definition of a zero char as nzchar.

NA_character_ is not considered zero char or all whitespace.

Note

Unlike the similar base functions, these do not coerce the input to character.

See also

nzchar, trimws, anyNF

Examples

anyZchar(c("hi", "bye", " ", ""))
#> [1] 4
anyWS(c("hi", "bye", " ", ""))
#> [1] 3
anyWS(c("hi", "bye", "who", ""), zchar = TRUE)
#> [1] 4