Forgive me if I've missed something obvious, but why don't you just create a subroutine that accepts a hash and calculates the sum.

My thoughts too. If you employ Phrase objects, you can even make it so that the total will automatically update as you add a new quantity key, e.g. "qtyCont":

use strict;
use warnings;
use 5.010;

use Phrase;

my $phr1 = Phrase->new();

$phr1->quantities("qty", 1);
say $phr1->total_quant;

$phr1->quantities("qtySum", 5);
say $phr1->total_quant;

$phr1->quantities("qtyCont", 8);
say $phr1->total_quant;

--output:--
1
6
14

[download]

/\/\/\/\/\/\/\

package Phrase;

use strict;
use warnings;
use 5.010;

sub new {
    my $self = {};

    $self->{QUANTITIES} = {};
    $self->{TOTAL_QUANT} = 0;

    bless($self);
    return $self;
}

sub total_quant {
    my $self = shift;
    return $self->{TOTAL_QUANT};
}

sub quantities {
    my $self = shift;
    my $key = shift;

    if (@_) {
        my $quant = shift;

        $self->{QUANTITIES}->{$key} = $quant; 
        $self->{TOTAL_QUANT} += $quant;
    }

    return $self->{QUANTITIES}->{$key};
}

1;

[download]

In reply to Re: How to detect a hash container key from a referenced sub value by 7stud
in thread How to detect a hash container key from a referenced sub value by igoryonya

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