"Mark Wagner" schreef:
> I've got a program where I could greatly simplify things by
> temporarily replacing strings with single characters. However, the
> potential input includes any valid Unicode character. Assuming that
> the invalid characters are never output to anything, are there any
> problems that I'd encounter from using code points beyond what Unicode
> defines (0x110000 and above)?
$ perl -wle'
$i = "0xFD";
while (1) {
$h = hex($i);
$c = chr($h);
last if $h != ord($c);
substr($i, 2, 0, "F");
}
printf "--> %s\n", $i;
'
Integer overflow in hexadecimal number at -e line 4.
Hexadecimal number > 0xffffffff non-portable at -e line 4.
Unicode character 0xffffffff is illegal at -e line 5.
--> 0xFFFFFFFFD
See also pack()/unpack().
--
Affijn, Ruud
"Gewoon is een tijger."
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