I've got a parent object that in it's ($self) contains a two dimentional array of child objects.

While I understand that I can tell the parent to pass the indices (coordinates) to each of the child objects at some time, is there any way for the child to query the parent object to determine what it's coordinates are?

The objects i'm currently using are perltoot style objects, and might look something like this:

package Parent;
use Child;
sub new {
   my $that  = shift;
   my $class = ref($that) || $that;
   my $self = {
      children=>undef;
   };
   bless($self, $class);
   $self->init();
   return $self;
}
sub init {
   my $xmax=5;
   my $ymax=5;
   foreach my $x (0 .. $xmax) {
      foreach my $y (0 .. $ymax) {
         $self->{'children'}[$x][$y]=Child->new($self);
      }
   }
}

package Child;
use Parent;
sub new {
   my $that  = shift;
   my $class = ref($that) || $that;
   my $parent = shift;
   my $self = { 
      parent => \$parent;
   };
   bless($self, $class);
   return $self;
}
sub whereami {
   #i don't know how to ask the parent here;
}

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In reply to Child objects querying parent objects about themselves by vaevictus

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