--- Etienne Marcotte <[EMAIL PROTECTED]> wrote:
> This is a very newbie question..
>
> When sending arguments to a sub, is it preferable to send a pointer to
> this value or the value itself. Or after x arguments it's better to send
> references?
>
> Etienne
Etienne,
I think Brett W. McCoy gave an excellent answer to your question. I just have one
point to
clarify: in Perl, we do not have pointers (the analogue is called a reference) in the
sense that
you might see them in C. For example, in C, you can directly manipulate the value of
a pointer to
access other areas of memory. This is not possible in Perl:
my @array = qw/ 1 2 3 4 /;
my $scalar_ref = \$var;
$scalar_ref++; # WRONG!
Example of output:
C:\>perl -e "$z=[qw/1 2 3 4/];print $z"
ARRAY(0x1a7f018)
C:\>perl -e "$z=[qw/1 2 3 4/];print ++$z"
27783193
I assume you know this, but I thought I would toss that out there, in case you weren't.
Cheers,
Curtis "Ovid" Poe
=====
Senior Programmer
Onsite! Technology (http://www.onsitetech.com/)
"Ovid" on http://www.perlmonks.org/
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