NAME
   Number::Extreme - Helper for keeping track of extreme values of objects

SYNOPSIS
     use Number::Extreme;

     # a bunch of objects with the "high" attribute.
     my $id = 0;
     my @objects = map { { id => $id++, high => $_ } } shuffle (1..100);

     # create a highest-high tracker, which extracts "high" from given objects
     my $highest_high = Number::Extreme->max(sub { $_->{high} });

     # test the values
     $highest_high->test($_) for @objects;

     # now you have the highest high
     warn $highest_high;

     # and the object of that high
     warn $highest_high->current->{id};

DESCRIPTION
   Number::Extreme provides simple utility for a common task: tracking
   highest or lowest value of an attribute of objects, while keeping track
   of which object is of the extreme value.

 METHODS
   $class->max($extractor)
   $class->min($extractor)
       Helper constructors for creating max/min tracker. $extractor takes
       $_ as the object to be tested, and returns the attribute to be
       compared.

   $class->amax($array)
   $class->amin($array)
       Helper constructors for tracking max/min values of an arrayref.
       "test()" should be called with the array index.

   $obj->test($o)
       Update the tracker with new incoming object.

AUTHOR
   Chia-liang Kao <[email protected]>

LICENSE
   This library is free software; you can redistribute it and/or modify it
   under the same terms as Perl itself.

SEE ALSO

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