stri_numbytes {stringi} | R Documentation

## Count the Number of Bytes

### Description

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

### Usage

    stri_numbytes(str)

### Arguments

`str` | character vector or an object coercible to

### Details

This is often not the function you would normally use in your string processing activities. See rather `stri_length`.

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, as opposed to the built-in `nchar(str, "bytes")` function call.

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

The returned values does not of course 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`.

### See Also

Other length: `stri_isempty`, `stri_length`, `stri_width`

### Examples

    stri_numbytes(letters)
    stri_numbytes(c('abc', '123', '\u0105\u0104'))

    ## Not run:
    # this used to fail on Windows, as there was no native support for 4-bytes
    # Unicode characters; see, however, stri_escape_unicode():
    stri_numbytes('\U7fffffff') # compare stri_length('\U7fffffff')

    ## End(Not run)

[Package stringi version 1.1.1 Index]