stri_enc_toutf32(str)NULLs.
stri_enc_fromutf32 for a dual operation.This function is roughly equivalent to a vectorized call
to utf8ToInt(enc2utf8(str)).
If you want a list of raw vector on output,
use stri_encode.
Unlike utf8ToInt, if improper UTF-8 byte sequences are detected,
a corresponding element is set to NULL and a warning is given,
see also stri_enc_toutf8 for a method to deal with such cases.
stri_enc_fromutf32,
stri_enc_toascii,
stri_enc_tonative,
stri_enc_toutf8, stri_encode,
stringi-encoding