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Postings from September 2001
On Sat, Sep 01, 2001 at 02:26:36PM -0400, Bryan C. Warnock wrote:
> > Because, you have the weird caveat of having to keep the returned
> > variable around.
> >
> > use File::chdir;
> >
> > {
> > my $old_dir = chdir($dir);
> > }
> >
> > The wires are showing through the magician's trick.
>
> Wouldn't that be:
>
> use File::chdir;
>
> {
> local $cwd = $dir; # Assuming $cwd FETCH and STORE manipulated chdir
> }
I didn't want to introduce a completely different way to change the
directory.
But let's say I did. How does a tied variable know it's been
localized?
$CWD = "bar";
{
local $CWD = "foo";
}
seems to trigger...
$tied_obj->STORE("bar");
for the first assignment.
$tied_obj->FETCH
$tied_obj->STORE
$tied_obj->STORE("foo");
from the local and
$tied_obj->STORE(1)
when it falls out of scope.
It *looks* like it's trying to reset the original value via that last
STORE, but screwing it up.
> Also, one comment on your patch - I saw a doc change for chdir, but I didn't
> see one for local.
There's one in there.
--
Michael G. Schwern <schwern@pobox.com> http://www.pobox.com/~schwern/
Perl6 Quality Assurance <perl-qa@perl.org> Kwalitee Is Job One
Some like elmers glue
but it needs reapplying.
I use super glue.
-- tlk
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