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Postings from November 1999
On Tue, Nov 16, 1999 at 06:08:18AM -0700, Tom Christiansen wrote:
> >$a = 5;
> >sub a { print $a }
> >sub b {local $a = 9; goto &a}
> >b;
>
> >This still prints 5... :-(
>
> And this is a problem exactly how?
> b()'s frame goes away. So its local view of $a went away.
This is an implementation detail. IIRC, it is documented that frame
is replaced, not goes away. What happens/should-happen with locals
during "replacement" is debatable.
> I do not find this behaviour astonishing.
I never said it was. However, while not astonishing, it is
unpredictable. Different implementation might be possible. What
happens, however, is making some "normal programming constructs" much
harder to implement.
Ilya