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 =====
When it comes to wine, women and song, wizards are allowed
to get drunk and croon as much as they like.
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