Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??


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

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others taking refuge in the Monastery: (4)
    As of 2015-10-08 22:55 GMT
    Find Nodes?
      Voting Booth?

      Does Humor Belong in Programming?

      Results (231 votes), past polls