Number::Extreme - Helper for keeping track of extreme values of objects
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};
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.
Helper constructors for creating max/min tracker. $extractor takes $_ as the object to be tested, and returns the attribute to be compared.
Helper constructors for tracking max/min values of an arrayref. test() should be called with the array index.
Update the tracker with new incoming object.
Chia-liang Kao <clkao@clkao.org>
This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
