NAME

Math::HashSum - Sum a list of key-value pairs on a per-key basis

SYNOPSIS

            

              
              
use Math::HashSum qw(hashsum);
my %hash1 = (a=>.1, b=>.4); 
my %hash2 = (a=>.2, b=>.5);
my %sum = hashsum(%hash1,%hash2);
print "$sum{a}\n"; # Prints .3
print "$sum{b}\n"; # Prints .9
            
          

DESCRIPTION

This module allows you to sum a list of key-value pairs on a per-key basis. It adds up all the values associated with each key in the given list and returns a hash containing the sum associated with each key.

The example in the synopsis should explain usage of the module effectively.

AUTHORS

David James <david@jamesgang.com>

SEE ALSO

Math::VecStat, Lingua::EN::Segmenter::TextTiling for an example of this module in use

LICENSE

            

              
              
Copyright (c) 2002 David James
All rights reserved.
This program is free software; you can redistribute it and/or
modify it under the same terms as Perl itself.