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| Author |
different type of getting an array reference
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| Octavian Rasnita 2004-12-27, 8:55 am |
| Hi all,
Can you please tell me what's the difference between these two types of
getting the reference to @a array?
my $ref = [ @a ];
and
my $ref = \@a;
If I do:
use Data::Dumper;
print Dumper $ref;
Both ways of accesing the @a array with a reference seems to be the same,
because Data::Dumper prints the same thing for $ref.
I need to access an array reference in a module, like...
my $self = [ @a ];
or...
my $self = \@a;
and I don't know if there will be any differences...
Thank you much.
Teddy
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| John W. Krahn 2004-12-27, 8:55 am |
| Octavian Rasnita wrote:
> Hi all,
Hello,
> Can you please tell me what's the difference between these two types of
> getting the reference to @a array?
>
> my $ref = [ @a ];
This copies the array to an anonymous array and returns a reference to that
anonymous array. It is equivalent to:
my $ref = do { my @temp = @a; \@temp };
> and
> my $ref = \@a;
This returns a reference to the array.
> If I do:
> use Data::Dumper;
> print Dumper $ref;
>
> Both ways of accesing the @a array with a reference seems to be the same,
> because Data::Dumper prints the same thing for $ref.
>
> I need to access an array reference in a module, like...
>
> my $self = [ @a ];
> or...
> my $self = \@a;
>
> and I don't know if there will be any differences...
It depends on the scope of @a.
John
--
use Perl;
program
fulfillment
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