[Israel.pm] bless and AUTOLOAD

[Gabor Szabo]

Have you tried to print $AUTOLOAD in the AUTOLOAD function?

You will notice that you have to declrae it using "our" not "my'
and then it is called when the DESTROY method of the package is called

so you need to create a

sub DESTROY {
}

to avoid calling AUTOLOAD on object destruction.


Gabor

On 9/25/07, Yona Shlomo <yona at cs.technion.ac.il> wrote:
> Hello,
>
> I have a strange collision using bless and AUTOLOAD.
>
> For example, here a simple Perl script, t.pl, which
> demostrates my problem:
>
>         #!/usr/bin/perl
>         use strict;
>         use warnings;
>         use Data::Dumper;
>
>         my $t=T->new();
>
>         package T;
>
>         my $AUTOLOAD;
>
>         sub new {
>                 my ($class, %arguments) = @_;
>                 bless {}, $class;
>         }
>
>         sub AUTOLOAD {
>                 print "why am I in AUTOLOAD?!\n";
>         }
>
>
> Surprisingly, for me, when I run t.pl I get:
>         why am I in AUTOLOAD?!
>
> So, why am I executing code in AUTOLOAD?
>
> Apparently the $class is to blame in the bless statement,
> but I don't know why and I don't know how to avoid this.
>
> Anyone?
>
> --
> Shlomo Yona
> yona at cs.technion.ac.il
> http://yeda.cs.technion.ac.il/~yona/
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>


-- 
Gabor Szabo
http://www.szabgab.com/
Perl Training in Israel  http://www.pti.co.il/