Fellow Monasterians,

Just tried to run what I thought would be a simple little module: Net::UPS which returns UPS services, rates, and enroute times. But I getting this lovely error:

Error executing run mode 'e': Can't use an undefined value as an ARRAY reference at /usr/share/perl5/Net/UPS.pm line 237

I'm confused what might be causing this. Ideas?

My code snippet (99% of it right out of the CPAN docs)

my $zip_to = "60446";
my $zip_from = "60187";
my $weight = 2.26";

my $package = Net::UPS::Package->new();
    $package -> weight($weight);
    
#dumped here

my $services = $ups->shop_for_rates($zip_from, $zip_to, $package);
while (my $service = shift @$services ) {
    $message .= sprintf("%-22s => \$.2f", $service->label, $service->t
+otal_charges);
    if ( my $days = $service->guaranteed_days ) {
        sprintf("(delivers in %d day%s)\n", $days, ($days > 1) ? "s" :
+ "");
    } else {
         "\n";
    }
}

[download]

Results of Data::Dumper:

$VAR1 = '60446';
$VAR2 = '43214';
$VAR3 = bless( [
                 undef,
                 undef,
                 undef,
                 undef,
                 undef,
                 undef,
                 '2.26'
               ], 'Net::UPS::Package' );

[download]

Last line (237) of this snip from UPS.pm is producing error message

sub shop_for_rates {
    my $self = shift;
    my ($from, $to, $packages, $args) = @_;

    unless ( $from && $to && $packages ) {
        croak "shop_for_rates(): usage error";
    }
    unless ( ref $from ) {
        $from = Net::UPS::Address->new(postal_code=>$from);
    }
    unless ( ref $to ) {
        $to =  Net::UPS::Address->new(postal_code=>$to);
    }
    unless ( ref $packages eq 'ARRAY' ) {
        $packages = [$packages];
    }
    $args           ||= {};
    $args->{mode}     = "shop";
    $args->{service}||= "GROUND";
    return [sort{$a->total_charges <=>$b->total_charges} @{$self->requ
+est_rate($from, $to, $packages, $args)}];
}

[download]

—Brad
"The important work of moving the world forward does not wait to be done by perfect men." George Eliot

In reply to Net::UPS causing undefined array ref error by bradcathey

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