I still don't get it. That code snippet sets the hash entry at $k to two times what's in $value. It still seems to me that you're not seeing that you can use a += operator on a hash element. What am I missing? 

foreach (@temp) {
    my ($instan, $value) = (split /\*/, $_);
    my $k = $key . ":" . $instan;
    $DM_D{$k} += $value;  # Change this line maybe???
}

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In reply to Re: Re: Re: How can I add the values of a hash? by steves
in thread How can I add the values of a hash? by Anonymous Monk

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