Re: Storing hashes in Apache::ASP
> I've been trying to store a hash in a session variable, using
> code like that appended below. Call me a doofus, but I can't
> seem to get it to work. Can anybody tell me what I'm doing wrong?
You have to store a reference to the hash, ie
$Session->{Stuff} = \%stuff;
not
$Session->{Stuff} = %stuff;
>
> Thanks,
> Bryan
> Example follows:
> --
>
>
>
> <%
> %stuff = ( a => '1', b => '2', c => '3' );
>
> $Session->{Stuff} = %stuff;
>
> $Response->Write ( "Results --\n" );
> for $i (keys %{$Session->{Stuff}} ) {
> $Response->Write ( "$i: $Session->{Stuff}{$i}\n" );
> }
>
> %>
>
>
>
>
> --
>
===
> Bryan Wright|"If you take cranberries and stew them like
> Physics Department | applesauce, they taste much more like prunes
> University of Virginia | than rhubarb does." -- Groucho
> Charlottesville, VA 22901 |
> (804) 924-7218 | [EMAIL PROTECTED]
>
===
>
>
Re: Storing hashes in Apache::ASP
> You have to store a reference to the hash, ie
>
> $Session->{Stuff} = \%stuff;
> not
> $Session->{Stuff} = %stuff;
\%stuff is not a reference to a hash, it's a reference to each key and
value in the hash. I don't think you'll ever have to use \ on arrays or
hashes. The only way to get a hash ref is by using the {} operator. e.g.:
{%stuff} Of course, you know how two copies of the data, so be careful.
ELB
--
Eric L. Brine | Chicken: The egg's way of making more eggs.
[EMAIL PROTECTED] | Do you always hit the nail on the thumb?
ICQ# 4629314 | An optimist thinks thorn bushes have roses.
Re: Storing hashes in Apache::ASP
Brian,
How about using a hashref
$stuff = { a => '1', b => '2', c => '3' };
instead of a hash?
darren
Bryan K. Wright ([EMAIL PROTECTED]) wrote:
> Hi folks,
>
> I've been trying to store a hash in a session variable, using
> code like that appended below. Call me a doofus, but I can't
> seem to get it to work. Can anybody tell me what I'm doing wrong?
>
> Thanks,
> Bryan
> Example follows:
> --
>
>
>
> <%
> %stuff = ( a => '1', b => '2', c => '3' );
>
> $Session->{Stuff} = %stuff;
>
> $Response->Write ( "Results --\n" );
> for $i (keys %{$Session->{Stuff}} ) {
> $Response->Write ( "$i: $Session->{Stuff}{$i}\n" );
> }
>
> %>
>
>
>
>
> --
> ===
> Bryan Wright|"If you take cranberries and stew them like
> Physics Department | applesauce, they taste much more like prunes
> University of Virginia | than rhubarb does." -- Groucho
> Charlottesville, VA 22901 |
> (804) 924-7218 | [EMAIL PROTECTED]
> ===
>
--
vi, vi, vi - the Editor of the Beast
Re: Storing hashes in Apache::ASP
> > You have to store a reference to the hash, ie
> >
> > $Session->{Stuff} = \%stuff;
> > not
> > $Session->{Stuff} = %stuff;
>
>
> \%stuff is not a reference to a hash, it's a reference to each key and
> value in the hash. I don't think you'll ever have to use \ on arrays or
> hashes. The only way to get a hash ref is by using the {} operator. e.g.:
> {%stuff} Of course, you know how two copies of the data, so be careful.
Er, I beg to differ. \%hash returns a reference to that hash -
see the top of p.246 of the camel book, 2nd ed.
The {} operators are for creating *anonymous* hashes.
Re: Storing hashes in Apache::ASP
> How about using a hashref
> $stuff = { a => '1', b => '2', c => '3' };
> $Session->{Stuff} = $stuff;
> instead of a hash?
According to the other person, that would fix your problem.
Personally, I know too litte of EmbPerl to be of more help.
btw,
$Session->{Stuff}{$i}
is the same as
$Session->{Stuff}->{$i}
so you were already expecting a hashref. I think perllol is the relevant
man page, and you might also want to review perlref.
ELB
Original Problem:
> I've been trying to store a hash in a session variable, using
> code like that appended below. Call me a doofus, but I can't
> seem to get it to work. Can anybody tell me what I'm doing wrong?
>
> Example follows:
>
> <%
> %stuff = ( a => '1', b => '2', c => '3' );
>
> $Session->{Stuff} = %stuff;
>
> $Response->Write ( "Results --\n" );
> for $i (keys %{$Session->{Stuff}} ) {
> $Response->Write ( "$i: $Session->{Stuff}{$i}\n" );
> }
>
> %>
>
--
Eric L. Brine | Chicken: The egg's way of making more eggs.
[EMAIL PROTECTED] | Do you always hit the nail on the thumb?
ICQ# 4629314 | An optimist thinks thorn bushes have roses.
Re: Storing hashes in Apache::ASP
> Er, I beg to differ. \%hash returns a reference to that hash -
> see the top of p.246 of the camel book, 2nd ed.
> The {} operators are for creating *anonymous* hashes.
I stand corrected. I was thinking of \($a, $b, $c). I always thought
\@array and \%hash worked the same way, so I never used them.
Sorry,
ELB
test.pl
===
%hash = (a => '1', b => '2', c => '3');
@array = qw(a b c);
@array_ref = \@array; # returns ref to array
@hash_ref = \%hash;# returns ref to hash
@list_ref = \(@array); # returns ref for each element
{
local $, = ', ';
local $\ = "\n";
print(@array_ref); # prints: ARRAY(0x655b78)
print(@hash_ref);# prints: HASH(0x655af4)
print(@list_ref);# prints:
# SCALAR(0x6559bc), SCALAR(0x6559d4), SCALAR(0x6559ec)
}
--
Eric L. Brine | Chicken: The egg's way of making more eggs.
[EMAIL PROTECTED] | Do you always hit the nail on the thumb?
ICQ# 4629314 | An optimist thinks thorn bushes have roses.
Re: Storing hashes in Apache::ASP
On Thu, 06 Jan 2000, Eric L. Brine wrote:
> > You have to store a reference to the hash, ie
> >
> > $Session->{Stuff} = \%stuff;
> > not
> > $Session->{Stuff} = %stuff;
>
>
> \%stuff is not a reference to a hash, it's a reference to each key and
> value in the hash. I don't think you'll ever have to use \ on arrays or
> hashes. The only way to get a hash ref is by using the {} operator. e.g.:
> {%stuff} Of course, you know how two copies of the data, so be careful.
{%stuff} is not a reference to %stuff. It's a reference to a newly created
hash. Be very careful using this syntax, it may not do what you expect it
to do:
%hash = (1 => 'perl');
$a = {%hash};
$hash{2} = 'apache';
print $a->{2};
If $a was a reference to %hash then it would print 'apache'.
--
Details: FastNet Software Ltd - XML, Perl, Databases.
Tagline: High Performance Web Solutions
Web Sites: http://come.to/fastnet http://sergeant.org
Available for Consultancy, Contracts and Training.
Re: Storing hashes in Apache::ASP
David is right here... $Session->{Stuff} = \%stuff is your answer.
--Joshua
_
Joshua Chamas Chamas Enterprises Inc.
NodeWorks >> free web link monitoring Huntington Beach, CA USA
http://www.nodeworks.com1-714-625-4051
David Mitchell wrote:
>
> > I've been trying to store a hash in a session variable, using
> > code like that appended below. Call me a doofus, but I can't
> > seem to get it to work. Can anybody tell me what I'm doing wrong?
>
> You have to store a reference to the hash, ie
>
> $Session->{Stuff} = \%stuff;
> not
> $Session->{Stuff} = %stuff;
> >
> > Thanks,
> > Bryan
> > Example follows:
> > --
> >
> >
> >
> > <%
> > %stuff = ( a => '1', b => '2', c => '3' );
> >
> > $Session->{Stuff} = %stuff;
> >
> > $Response->Write ( "Results --\n" );
> > for $i (keys %{$Session->{Stuff}} ) {
> > $Response->Write ( "$i: $Session->{Stuff}{$i}\n" );
> > }
> >
> > %>
> >
> >
> >
> >
> > --
> >
> ===
> > Bryan Wright|"If you take cranberries and stew them like
> > Physics Department | applesauce, they taste much more like prunes
> > University of Virginia | than rhubarb does." -- Groucho
> > Charlottesville, VA 22901 |
> > (804) 924-7218 | [EMAIL PROTECTED]
> >
> ===
> >
> >
