"Though since I don't actually have a perl 5.004 to test on, I do wonder if it works..."

The only thing that I can see which won't work is 'use warnings;': 

$ corelist warnings

Data for 2022-05-27
warnings was first released with perl v5.6.0

[download]

Replace with '$^W = 1;'.

— Ken

In reply to Re^3: Add a fixed number of unique elements to hash by kcott
in thread Add a fixed number of unique elements to hash by Vasek

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