Thank you guys for clearing my concept, I know what to do now !
----- Original Message -----
From: "Jenda Krynicky" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Wednesday, September 08, 2004 8:45 PM
Subject: Re: Using reference or throw valuables to sub ?
> From: "Bee" <[EMAIL PROTECTED]>
> > Say I have an array that carries at least 2mb data or 70mb max,
> > but in my code, I want to throw this array to another sub ( within the
> > same package )for further operations . so, which one I would better
> > to use and what's the reason ?
> >
> > gosub [EMAIL PROTECTED]
> > or
> > gosub @array
>
> Definitely the first.
>
> > Is that if I throw the array to another sub also means the
> > array would be copied and then pass to the target sub ?
> > while reference is using the same data in system memory?
>
> The first version passes just the reference to the already existing
> array while the second creates a new array containing aliases to the
> items in the original array. This means that unless you do
>
> sub foo {
> my @array = @_;
> ...
>
> you do not have copies of the elements in the array, but you do force
> Perl to create an array. I'm not sure how many bytes do the aliases
> take, but if the array has many elements you probably do not want to
> do that.
>
> The
> my @array = @_;
> in the sub would create a copy of the array and the values.
>
> Jenda
> P.S.: You do not throw values to subs, you pass them. You only throw
> exceptions.
> ===== [EMAIL PROTECTED] === http://Jenda.Krynicky.cz =====
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> -- Terry Pratchett in Sourcery
>
>
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