sub new {
    my ($class) = @_;

    my $self->{_mtx_} = [];

    bless $self, $class;
    return $self;
}




sub copycomp_matrix {

  my ($self, $arg) = @_;

  $self->_recurse($arg,$self->{_mtx_});

  print Dumper($self->{_mtx_});

}

sub _recurse {

  my ($self, $in, $out) = @_;

  for (my $i = 0;$i<@{$in};$i++){

    if (ref $in->[$i] eq 'ARRAY'){
      $self->_recurse($in->[$i], $out->[$i]);
    }else{
      if (!$out->[$i]){
        $out->[$i] = $in->[$i] ;
      }else{
        $out->[$i] = $in->[$i] +1 ;
      }
    }
  }
}


#########################################################
use strict;
use lib "./";
use Above::Obj;

my $z = Above::Obj->new();

my $a = [[1,2],[2,3]];

$z->copycomp_matrix($a);