assertive (version 0.3-0)

assert_all_are_single_characters: Is the input a single character?

Description

Checks to see if he unput is a single character.

Usage

assert_all_are_single_characters(x, na_ignore = FALSE)

assert_any_are_single_characters(x, na_ignore = FALSE)

is_single_character(x)

Arguments

x

A character vector.

na_ignore

A logical value. If FALSE, NA values cause an error; otherwise they do not. Like na.rm in many stats package functions, except that the position of the failing values does not change.

Value

• is_single_character returns TRUE when the input is a single character (as determined by nchar; this excludes NA). The assert_* functions return nothing but throw an error if the corresponding is_* function returns FALSE.

See Also

nchar

Examples

x <- c("", "a", "aa", NA)
is_single_character(x)