Is it possible and does it make sense to create constructors with empty $self? Say I do not know parameters so I cannot even assign "undef". 
sub new
{
    my $class     = shift;
    my $self     = 
    {
        ## I do not know parameters ??
    };
    bless $self, $class;
    return $self;    
}

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In reply to Creating consructor new with empty $self by vit

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