On Thursday, May 23, 2002, at 11:34 , HENRY,MARK (HP-Roseville,ex1) wrote:
[..]
>
> If a scalar variable basically contains a hard reference to a thingy, then
> aren't they one and the same for the most part?
we presume you have peeked at
perldoc perlref
cf also
perldoc -f ref
one way of doing this is to go over the section
"
Here are some examples:
$scalarref = \$foo;
$arrayref = \@ARGV;
$hashref = \%ENV;
$coderef = \&handler;
$globref = \*foo;
"
the variables on the left are 'softish references' to other things,
and are not 'scalar' in the sense of
my $scalar_string_var = 'this sequence of words';
my $scalar_int_var = 3;
my $scalar_float_var = 3.14156;
since ref() will return what they 'refer to'.
note that
my $type = ref($scalarref);
will return "SCALAR" to the variable $type.
Whereas
my $not_ref = ref($scalar_string_var);
will set $not_ref to "blanco de blanco" - since that is not a reference
but the thing in itself...
what I think you are calling 'hard reference'(????).
note also that the @ARGV is a 'hard reference' to an array
of things - just as %ENV is a 'hard reference' to a hash...
cf:
http://www.wetware.com/drieux/pbl/perlTrick/WhatIsMeetsIsa.txt
for a code fragment that may help you....
ciao
drieux
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