# stri_numbytes: Count the Number of Bytes

## Description

Counts the number of bytes needed to store each string in the computer’s memory.

## Usage

stri_numbytes(str)


## Arguments

str

character vector or an object coercible to

## Details

Often, this is not the function you would normally use in your string processing activities. See stri_length instead.

For 8-bit encoded strings, this is the same as stri_length. For UTF-8 strings, the returned values may be greater than the number of code points, as UTF-8 is not a fixed-byte encoding: one code point may be encoded by 1-4 bytes (according to the current Unicode standard).

Missing values are handled properly.

The strings do not need to be re-encoded to perform this operation.

The returned values do not include the trailing NUL bytes, which are used internally to mark the end of string data (in C).

## Value

Returns an integer 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_isempty(), stri_length(), stri_pad_both(), stri_sprintf(), stri_width()

## Examples

stri_numbytes(letters)
##  [1] 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1
stri_numbytes(c('abc', '123', '\u0105\u0104'))
## [1] 3 3 4
## Not run:
# this used to fail on Windows, where there were no native support
# for 4-bytes Unicode characters; see, however, stri_unescape_unicode():
stri_numbytes('\U001F600') # compare stri_length('\U001F600')
## [1] 4
## End(Not run)