There's usually better ways of achieving one's goals. We could help you better if we knew what you were actually trying to do.

I have used symbolic references to simulate linked lists. For example:

sub _create_node
  {
    my ($node,$parent,$node_info) = @_;
    no strict;
    @{$node}{qw/parent info/} = ($parent,$node_info);
  }

[download]

This way, each node is a hash with the name of its parent under the key "parent" and the info related to the node under the key "node_info". To go through a node:

sub go_through
  {
    no strict 'refs';
    my ($self, $node) = @_;
    return "" unless defined ${$node}{"info"};
    my @info_nodes;
    while (${$node}{"info"} ne "root"){
      push @info_nodes, (${$node}{"info"});
      $node = ${$node}{"parent"};
    }
    return \@info_nodes;
  }

[download]

This runs very fast and doesn't need too much memory

citromatik

In reply to Re^2: Invoke sub whose name is value of scalar by citromatik
in thread Invoke sub whose name is value of scalar by andreas1234567

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