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Think about Loose Coupling

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You return nothing at recursive call. But, at first, you will see lots of warnings if you put use strict and use warnings for your code...

It maybe like this.

{ package bin_tree; use strict; use warnings; sub new{ my $class=shift; my $self={value=>undef, a=>undef, b=>undef}; #make our object as a +n anonymous hash with keywords but no values yet, that way the a an $self->{value}=0; bless $self, $class; #make object return $self; #return object } sub populate{ my($self, $depth)=@_; return if(! $depth); $self->{a} = populate( bin_tree->new() , $depth -1 ); $self->{b} = populate( bin_tree->new() , $depth -1 ); return $self; } 1; } #end bin_tree package main; use strict; use warnings; #try to create a three node deep binary tree my $bintree = bin_tree->new(); $bintree->populate(3); use Data::Dumper; print Dumper $bintree;
Moose has "Recipe 3" for Binary Tree. It is far more advanced.

In reply to Re: recursive creation of attached objects? by remiah
in thread recursive creation of attached objects? by Anonymous Monk

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