well thanks for the explanation..
I asked because we saw pointer in my last C class (buy the way I hate
ANSI C).. and was wondering, when sending an array of let's say 6
strings, if it would be faster to send the adress of this array, kind of
like we do in C by using pointers.
Then the sub can modify the info at the location pointed by the adresse
of the received pointer.
So for now I think I'll stick with sending sub($value1, $value2); sub
{my $foo, $bar) = @_
and if sometime I have something "big" to pass as an argument I'll check
for using references..
Etienne
Curtis Poe wrote:
>
> --- 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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