On Thu, Aug 24, 2000 at 02:09:15PM -0400, Chaim Frenkel wrote:
> >>>>> "JH" == Jarkko Hietaniemi <[EMAIL PROTECTED]> writes:
>
> JH> "The first operation done on the return value of open() shall be defined()
> JH> or you shall regret your pitiful existence."? (a flag on the scalar coming
> JH> from open that makes any other op than defined() to die and defined() clears
> JH> the flag)
>
> Ala, taint? Except the variable is tainted with death?
Yes, sort of. "Touch me and I'll bring you down."
> Hmm, this would make two types of undef. Actually, if a callee could
(Not really undef, boolean, see Tom's reply). But in either case not
a problem since the user should have no explicit means of telling the
kinds part nor certainly ways of changing the kind.
> But the drawback would be that the actual victim may not be the primal
> cause.
>
> sub foo {
> my $fh = open(....);
> ... Lots more code ...
> return $fh;
> }
>
> $victim = foo;
> print $victim "I'm helpless";
Tough.
--
$jhi++; # http://www.iki.fi/jhi/
# There is this special biologist word we use for 'stable'.
# It is 'dead'. -- Jack Cohen
