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# stri_isempty: Determine if a String is of Length Zero

## Description

This is the fastest way to find out whether the elements of a character vector are empty strings.

## Usage

    stri_isempty(str)

## Arguments

`str` | character vector or an object coercible to

## Details

Missing values are handled properly.

## Value

Returns a logical vector of the same length as `str`.

## Author(s)

Marek Gagolewski and other contributors

## See Also

The official online manual of stringi at https://stringi.gagolewski.com/

Gagolewski M., stringi: Fast and portable character string processing in R, Journal of Statistical Software 103(2), 2022, 1-59, doi:10.18637/jss.v103.i02

Other length: `%s$%()`, `stri_length()`, `stri_numbytes()`, `stri_pad_both()`, `stri_sprintf()`, `stri_width()`

## Examples

    stri_isempty(letters[1:3])
    ## [1] FALSE FALSE FALSE
    stri_isempty(c(',', '', 'abc', '123', '\u0105\u0104'))
    ## [1] FALSE  TRUE FALSE FALSE FALSE
    stri_isempty(character(1))
    ## [1] TRUE