Heap::Elem::RefRev - phpMan

Heap::Elem::RefRev(3pm)        User Contributed Perl Documentation        Heap::Elem::RefRev(3pm)

NAME
       Heap::Elem::RefRev - Reversed Object Reverence Heap Elements

SYNOPSIS
         use Heap::Elem::RefRev( RefRElem );
         use Heap::Fibonacci;

         my $heap = Heap::Fibonacci->new;
         my $elem;

         foreach $i ( 1..100 ) {
             $obj = myObject->new( $i );
             $elem = RefRElem( $obj );
             $heap->add( $elem );
         }

         while( defined( $elem = $heap->extract_top ) ) {
             # assume that myObject object have a method I<printable>
             print "Largest is ", $elem->val->printable, "\n";
         }

DESCRIPTION
       Heap::Elem::RefRev is used to wrap object reference values into an element that can be
       managed on a heap.  Each referenced object must have a method cmp which can compare itself
       with any of the other objects that have references on the same heap.  These comparisons
       must be consistant with normal arithmetic.  The top of the heap will have the largest
       (according to cmp) element still remaining.  (See Heap::Elem::Ref if you want the heap to
       always return the smallest element.)

       The details of the Elem interface are described in Heap::Elem.

       The details of using a Heap interface are described in Heap.

AUTHOR
       John Macdonald, john AT perlwolf.com

COPYRIGHT
       Copyright 1998-2007, O'Reilly & Associates.

       This code is distributed under the same copyright terms as perl itself.

SEE ALSO
       Heap(3), Heap::Elem(3), Heap::Elem::Ref(3).

perl v5.22.1                                2016-03-23                    Heap::Elem::RefRev(3pm)

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