Forget about references for a minute.
%hash <- refers to the entire hash.
$hash{key} refers to one element of that hash.
So as a reference you would address the entire hash as %$hashref
Or a single element of that hash as $$hashref{key}
HTH
Paul
-----Original Message-----
From: Eric Walker [mailto:[EMAIL PROTECTED]
Sent: Thursday, November 20, 2003 2:20 PM
To: Paul Kraus
Cc: 'perlgroup'
Subject: RE: Pointers
ok why the $$ instead of the %$?
sorry confused.
On Thu, 2003-11-20 at 12:08, Paul Kraus wrote:
$$overdate{key}
Perldoc perlref
-----Original Message-----
From: Eric Walker [mailto:[EMAIL PROTECTED]
Sent: Thursday, November 20, 2003 2:03 PM
To: perlgroup
Subject: Pointers
Hello all, newbie here got a few questions:
I am working with pointers and I sort of understand them and then I
don't. I understand that instead of making a variable for a
particular
value you can use a pointer to access the same data. So the new
variable stores the pointer to the old data. ie.... $a = "mom";
$b = \$b;
print $$b --> mom
Ok so what I don't understand is when do I need to dereference the
pointer for hashes. so I have a hash pointer.. \%overData. Now
how do
I access this hash. %$overData?
Thanks
confused.
newbie
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