R: Check If a Data Stream Is Possibly in ASCII

stri_enc_isascii {stringi} | R Documentation

## Check If a Data Stream Is Possibly in ASCII

### Description

The function checks whether all bytes in a string are <= 127.

### Usage

    stri_enc_isascii(str)

### Arguments

`str` | character vector, a raw vector, or a list of `raw` vectors

### Details

This function is independent of the way R marks encodings in character strings (see Encoding and stringi-encoding).

### Value

Returns a logical vector. The i-th element indicates whether the i-th string corresponds to a valid ASCII byte sequence.

### See Also

Other encoding_detection: `stri_enc_detect2()`, `stri_enc_detect()`, `stri_enc_isutf16be()`, `stri_enc_isutf8()`, `stringi-encoding`

### Examples

    stri_enc_isascii(letters[1:3])
    stri_enc_isascii("\u0105\u0104")

[Package stringi version 1.4.6 Index]