AssFace,
I have been told that if you are going to throw away the values it is better not to even bother assigning the hash keys: 
$hash{$thing}++;

versus

$hash{$thing} = undef;

[download]
I am not one for cargo cult programming. I honestly want to know why something is a better idiom for something than just doing it. With this said, I haven't thoroughly investigated this. I did do some benchmarks and the undef came out faster. Additionally, it makes sense that it isn't allocating any memory or doing any computation of the value.

Cheers - L~R

In reply to Re: Re: extracting redundant and unique items by Limbic~Region
in thread extracting redundant and unique items by Anonymous Monk

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