If count is never defined, it is undef and hence equal to 0 in numeric context. If you are just trying to accumulate the number of times you encounter a certain value of comp, perhaps you mean: 

foreach (@COMPANIES) {
    $sum{$_->{comp}}++;
}

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Note that since Perl automatically stringifies alphanumeric hash keys, you don't need to include quotes in this context.

In reply to Re: Count not working by kennethk
in thread Count not working by molson

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