stri_enc_fromutf32(vec)NULLs. For convenience, a single integer vector can also
be given.NULLs in the input list are converted to NA_character_.This function roughly acts like a vectorized version of
intToUtf8. As usual in stri_enc_toutf32 for a dual operation.
If an incorrect code point is given, a warning is generated
and a string is set to NA.
Note that 0s are not allowed in vec, as they are used
internally to mark the end of a string (in the C API).
See also stri_encode for decoding arbitrary byte sequences
from any given encoding.
stri_conv,
  stri_encode;
  stri_enc_toascii;
  stri_enc_tonative;
  stri_enc_toutf32;
  stri_enc_toutf8;
  stringi-encoding