Sounds like you've got an empty key in there. One fix might be to delete that slice, but you'd be better off figuring out how it got in there in the first place..

delete $hshOut{''};
foreach $keyOut (sort {$a <=> $b} keys %hshOut) {
    ...
}

[download]

cheers,

J

In reply to Re: Hashing: Argument "" isn't numeric in sort by edoc
in thread Hashing: Argument "" isn't numeric in sort by P0w3rK!d

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